diff --git a/ffplayout.py b/ffplayout.py
index 7976c738..fb03b124 100755
--- a/ffplayout.py
+++ b/ffplayout.py
@@ -41,7 +41,7 @@ def main():
     """
 
     if stdin_args.mode:
-        output = locate('ffplayout.output.{}.output'.format(stdin_args.mode))
+        output = locate(f'ffplayout.output.{stdin_args.mode}.output')
         output()
 
     else:
@@ -54,7 +54,7 @@ def main():
                 mode = os.path.splitext(output)[0]
 
                 if mode == _playout.mode:
-                    output = locate('ffplayout.output.{}.output'.format(mode))
+                    output = locate(f'ffplayout.output.{mode}.output')
                     output()
 
 
diff --git a/ffplayout/config/README.md b/ffplayout/config/README.md
new file mode 100644
index 00000000..a78f5971
--- /dev/null
+++ b/ffplayout/config/README.md
@@ -0,0 +1,15 @@
+# Custom Configuration
+
+Extend your arguments for using them in your custom extensions.
+
+The file name must have the **argparse_** prefix. The content should look like:
+
+```YAML
+short: -v
+long: --volume
+help: set audio volume
+```
+
+At least **short** or **long** have to exist, all other parameters are optional. You can also extend the config, with keys which are exist in **ArgumentParser.add_argument()**.
+
+**Every argument must have its own yaml file!**
diff --git a/ffplayout/config/argparse_volume.yml b/ffplayout/config/argparse_volume.yml
new file mode 100644
index 00000000..a015200e
--- /dev/null
+++ b/ffplayout/config/argparse_volume.yml
@@ -0,0 +1,3 @@
+short: -v
+long: --volume
+help: set audio volume
diff --git a/ffplayout/filters/README.md b/ffplayout/filters/README.md
index dd7ae8fb..b83c410e 100644
--- a/ffplayout/filters/README.md
+++ b/ffplayout/filters/README.md
@@ -7,3 +7,18 @@ Add your one filters here. They must have the correct file naming:
 The file itself should contain only one filter in a function named `def filter(prope):`
 
 Check **v_addtext.py** for example.
+
+In your filter you can also read custom properties from the current program node. That you can use for any usecase you wish, like reading a subtitle file, or a different logo for every clip and so on.
+
+The normal program node looks like:
+
+```JSON
+{
+    "in": 0,
+    "out": 3600.162,
+    "duration": 3600.162,
+    "source": "/dir/input.mp4"
+}
+```
+
+This you can extend to your needs, and apply this values to your filters.
diff --git a/ffplayout/filters/a_volume.py b/ffplayout/filters/a_volume.py
new file mode 100644
index 00000000..ca495dfb
--- /dev/null
+++ b/ffplayout/filters/a_volume.py
@@ -0,0 +1,10 @@
+from ffplayout.utils import get_float, stdin_args
+
+
+def filter(probe, node=None):
+    """
+    set audio volume
+    """
+
+    if stdin_args.volume and get_float(stdin_args.volume, False):
+        return f'volume={stdin_args.volume}'
diff --git a/ffplayout/filters/default.py b/ffplayout/filters/default.py
index 3dc97ad6..a7d088a5 100644
--- a/ffplayout/filters/default.py
+++ b/ffplayout/filters/default.py
@@ -23,7 +23,8 @@ import re
 from glob import glob
 from pydoc import locate
 
-from ffplayout.utils import _global, _pre, _text
+from ffplayout.utils import (_global, _pre, _text, get_float, is_advertisement,
+                             messenger)
 
 # ------------------------------------------------------------------------------
 # building filters,
@@ -37,7 +38,7 @@ def text_filter():
 
     if _text.add_text and _text.over_pre:
         if _text.fontfile and os.path.isfile(_text.fontfile):
-            font = ":fontfile='{}'".format(_text.fontfile)
+            font = f":fontfile='{_text.fontfile}'"
         filter_chain = [
             "null,zmq=b=tcp\\\\://'{}',drawtext=text=''{}".format(
                 _text.address.replace(':', '\\:'), font)]
@@ -70,12 +71,10 @@ def pad_filter(probe):
                         _pre.aspect, abs_tol=0.03):
         if probe.video[0]['aspect'] < _pre.aspect:
             filter_chain.append(
-                'pad=ih*{}/{}/sar:ih:(ow-iw)/2:(oh-ih)/2'.format(_pre.w,
-                                                                 _pre.h))
+                f'pad=ih*{_pre.w}/{_pre.h}/sar:ih:(ow-iw)/2:(oh-ih)/2')
         elif probe.video[0]['aspect'] > _pre.aspect:
             filter_chain.append(
-                'pad=iw:iw*{}/{}/sar:(ow-iw)/2:(oh-ih)/2'.format(_pre.h,
-                                                                 _pre.w))
+                f'pad=iw:iw*{_pre.h}/{_pre.w}/sar:(ow-iw)/2:(oh-ih)/2')
 
     return filter_chain
 
@@ -87,7 +86,7 @@ def fps_filter(probe):
     filter_chain = []
 
     if probe.video[0]['fps'] != _pre.fps:
-        filter_chain.append('fps={}'.format(_pre.fps))
+        filter_chain.append(f'fps={_pre.fps}')
 
     return filter_chain
 
@@ -101,11 +100,11 @@ def scale_filter(probe):
 
     if int(probe.video[0]['width']) != _pre.w or \
             int(probe.video[0]['height']) != _pre.h:
-        filter_chain.append('scale={}:{}'.format(_pre.w, _pre.h))
+        filter_chain.append(f'scale={_pre.w}:{_pre.h}')
 
     if not math.isclose(probe.video[0]['aspect'],
                         _pre.aspect, abs_tol=0.03):
-        filter_chain.append('setdar=dar={}'.format(_pre.aspect))
+        filter_chain.append(f'setdar=dar={_pre.aspect}')
 
     return filter_chain
 
@@ -117,11 +116,10 @@ def fade_filter(duration, seek, out, track=''):
     filter_chain = []
 
     if seek > 0.0:
-        filter_chain.append('{}fade=in:st=0:d=0.5'.format(track))
+        filter_chain.append(f'{track}fade=in:st=0:d=0.5')
 
     if out != duration:
-        filter_chain.append('{}fade=out:st={}:d=1.0'.format(track,
-                                                            out - seek - 1.0))
+        filter_chain.append(f'{track}fade=out:st={out - seek - 1.0}:d=1.0')
 
     return filter_chain
 
@@ -139,35 +137,32 @@ def overlay_filter(duration, ad, ad_last, ad_next):
         logo_chain = []
         if _pre.logo_scale and \
                 re.match(r'\d+:-?\d+', _pre.logo_scale):
-            scale_filter = 'scale={},'.format(_pre.logo_scale)
-        logo_extras = 'format=rgba,{}colorchannelmixer=aa={}'.format(
-            scale_filter, _pre.logo_opacity)
+            scale_filter = f'scale={_pre.logo_scale},'
+        logo_extras = (f'format=rgba,{scale_filter}'
+                       f'colorchannelmixer=aa={_pre.logo_opacity}')
         loop = 'loop=loop=-1:size=1:start=0'
-        logo_chain.append(
-            'movie={},{},{}'.format(_pre.logo, loop, logo_extras))
+        logo_chain.append(f'movie={_pre.logo},{loop},{logo_extras}')
         if ad_last:
             logo_chain.append('fade=in:st=0:d=1.0:alpha=1')
         if ad_next:
-            logo_chain.append('fade=out:st={}:d=1.0:alpha=1'.format(
-                duration - 1))
+            logo_chain.append(f'fade=out:st={duration - 1}:d=1.0:alpha=1')
 
-        logo_filter = '{}[l];[v][l]{}:shortest=1'.format(
-            ','.join(logo_chain), _pre.logo_filter)
+        logo_filter = (f'{",".join(logo_chain)}[l];[v][l]'
+                       f'{_pre.logo_filter}:shortest=1')
 
     return logo_filter
 
 
-def add_audio(probe, duration, msg):
+def add_audio(probe, duration):
     """
     when clip has no audio we generate an audio line
     """
     line = []
 
     if not probe.audio:
-        msg.warning('Clip "{}" has no audio!'.format(probe.src))
-        line = [
-            'aevalsrc=0:channel_layout=2:duration={}:sample_rate={}'.format(
-                duration, 48000)]
+        messenger.warning(f'Clip "{probe.src}" has no audio!')
+        line = [(f'aevalsrc=0:channel_layout=2:duration={duration}:'
+                 f'sample_rate={48000}')]
 
     return line
 
@@ -179,8 +174,8 @@ def add_loudnorm(probe):
     loud_filter = []
 
     if probe.audio and _pre.add_loudnorm:
-        loud_filter = [('loudnorm=I={}:TP={}:LRA={}').format(
-            _pre.loud_i, _pre.loud_tp, _pre.loud_lra)]
+        loud_filter = [
+            f'loudnorm=I={_pre.loud_i}:TP={_pre.loud_tp}:LRA={_pre.loud_lra}']
 
     return loud_filter
 
@@ -193,7 +188,7 @@ def extend_audio(probe, duration):
 
     if probe.audio and 'duration' in probe.audio[0] and \
             duration > float(probe.audio[0]['duration']) + 0.1:
-        pad_filter.append('apad=whole_dur={}'.format(duration))
+        pad_filter.append(f'apad=whole_dur={duration}')
 
     return pad_filter
 
@@ -203,12 +198,11 @@ def extend_video(probe, duration, target_duration):
     check video duration, is it shorter then clip duration - pad it
     """
     pad_filter = []
+    vid_dur = probe.video[0].get('duration')
 
-    if 'duration' in probe.video[0] and \
-        target_duration < duration > float(
-            probe.video[0]['duration']) + 0.1:
-        pad_filter.append('tpad=stop_mode=add:stop_duration={}'.format(
-            duration - float(probe.video[0]['duration'])))
+    if vid_dur and target_duration < duration > float(vid_dur) + 0.1:
+        pad_filter.append(
+            f'tpad=stop_mode=add:stop_duration={duration - float(vid_dur)}')
 
     return pad_filter
 
@@ -217,46 +211,45 @@ def realtime_filter(duration, track=''):
     speed_filter = ''
 
     if _pre.realtime:
-        speed_filter = ',{}realtime=speed=1'.format(track)
+        speed_filter = f',{track}realtime=speed=1'
 
         if _global.time_delta < 0:
             speed = duration / (duration + _global.time_delta)
 
             if speed < 1.1:
-                speed_filter = ',{}realtime=speed={}'.format(track, speed)
+                speed_filter = f',{track}realtime=speed={speed}'
 
     return speed_filter
 
 
 def split_filter(filter_type):
     map_node = []
-    filter_prefix = ''
+    prefix = ''
     _filter = ''
 
     if filter_type == 'a':
-        filter_prefix = 'a'
+        prefix = 'a'
 
     if _pre.output_count > 1:
         for num in range(_pre.output_count):
-            map_node.append('[{}out{}]'.format(filter_type, num + 1))
+            map_node.append(f'[{filter_type}out{num + 1}]')
 
-        _filter = ',{}split={}{}'.format(filter_prefix, _pre.output_count,
-                                         ''.join(map_node))
+        _filter = f',{prefix}split={_pre.output_count}{"".join(map_node)}'
 
     else:
-        _filter = '[{}out1]'.format(filter_type)
+        _filter = f'[{filter_type}out1]'
 
     return _filter
 
 
-def custom_filter(probe, type):
+def custom_filter(probe, type, node):
     filter_dir = os.path.dirname(os.path.abspath(__file__))
     filters = []
 
     for filter in glob(os.path.join(filter_dir, f'{type}_*')):
         filter = os.path.splitext(os.path.basename(filter))[0]
         filter_func = locate(f'ffplayout.filters.{filter}.filter')
-        link = filter_func(probe)
+        link = filter_func(probe, node)
 
         if link is not None:
             filters.append(link)
@@ -264,10 +257,17 @@ def custom_filter(probe, type):
     return filters
 
 
-def build_filtergraph(duration, seek, out, ad, ad_last, ad_next, probe, msg):
+def build_filtergraph(node, node_last, node_next, seek, probe):
     """
     build final filter graph, with video and audio chain
     """
+
+    duration = get_float(node['duration'], 20)
+    out = get_float(node['out'], duration)
+    ad = is_advertisement(node)
+    ad_last = is_advertisement(node_last)
+    ad_next = is_advertisement(node_next)
+
     video_chain = []
     audio_chain = []
 
@@ -275,7 +275,7 @@ def build_filtergraph(duration, seek, out, ad, ad_last, ad_next, probe, msg):
         seek = 0
 
     if probe.video[0]:
-        custom_v_filter = custom_filter(probe, 'v')
+        custom_v_filter = custom_filter(probe, 'v', node)
         video_chain += text_filter()
         video_chain += deinterlace_filter(probe)
         video_chain += pad_filter(probe)
@@ -286,10 +286,10 @@ def build_filtergraph(duration, seek, out, ad, ad_last, ad_next, probe, msg):
             video_chain += custom_v_filter
         video_chain += fade_filter(duration, seek, out)
 
-        audio_chain += add_audio(probe, out - seek, msg)
+        audio_chain += add_audio(probe, out - seek)
 
         if not audio_chain:
-            custom_a_filter = custom_filter(probe, 'a')
+            custom_a_filter = custom_filter(probe, 'a', node)
 
             audio_chain.append('[0:a]anull')
             audio_chain += add_loudnorm(probe)
@@ -299,7 +299,7 @@ def build_filtergraph(duration, seek, out, ad, ad_last, ad_next, probe, msg):
             audio_chain += fade_filter(duration, seek, out, 'a')
 
     if video_chain:
-        video_filter = '{}[v]'.format(','.join(video_chain))
+        video_filter = f'{",".join(video_chain)}[v]'
     else:
         video_filter = 'null[v]'
 
@@ -308,15 +308,14 @@ def build_filtergraph(duration, seek, out, ad, ad_last, ad_next, probe, msg):
     v_split = split_filter('v')
     video_map = ['-map', '[vout1]']
     video_filter = [
-        '-filter_complex', '[0:v]{};{}{}{}'.format(
-            video_filter, logo_filter, v_speed, v_split)]
+        '-filter_complex',
+        f'[0:v]{video_filter};{logo_filter}{v_speed}{v_split}']
 
     a_speed = realtime_filter(out - seek, 'a')
     a_split = split_filter('a')
     audio_map = ['-map', '[aout1]']
     audio_filter = [
-        '-filter_complex', '{}{}{}'.format(','.join(audio_chain),
-                                           a_speed, a_split)]
+        '-filter_complex', f'{",".join(audio_chain)}{a_speed}{a_split}']
 
     if probe.video[0]:
         return video_filter + audio_filter + video_map + audio_map
diff --git a/ffplayout/filters/v_drawtext.py b/ffplayout/filters/v_drawtext.py
index 76dcb222..4ea0d791 100644
--- a/ffplayout/filters/v_drawtext.py
+++ b/ffplayout/filters/v_drawtext.py
@@ -4,7 +4,7 @@ import re
 from ffplayout.utils import _text
 
 
-def filter(probe):
+def filter(probe, node=None):
     """
     extract title from file name and overlay it
     """
diff --git a/ffplayout/folder.py b/ffplayout/folder.py
index 82560182..05cdfcfa 100644
--- a/ffplayout/folder.py
+++ b/ffplayout/folder.py
@@ -52,7 +52,7 @@ class MediaStore:
     def fill(self):
         for ext in _storage.extensions:
             self.store.extend(
-                glob.glob(os.path.join(self.folder, '**', '*{}'.format(ext)),
+                glob.glob(os.path.join(self.folder, '**', f'*{ext}'),
                           recursive=True))
 
         if _storage.shuffle:
@@ -84,7 +84,7 @@ class MediaWatcher:
 
     def __init__(self, media):
         self._media = media
-        self.extensions = ['*{}'.format(ext) for ext in _storage.extensions]
+        self.extensions = [f'*{ext}' for ext in _storage.extensions]
 
         self.event_handler = PatternMatchingEventHandler(
             patterns=self.extensions)
@@ -107,14 +107,14 @@ class MediaWatcher:
 
         self._media.add(event.src_path)
 
-        messenger.info('Add file to media list: "{}"'.format(event.src_path))
+        messenger.info(f'Add file to media list: "{event.src_path}"')
 
     def on_moved(self, event):
         self._media.remove(event.src_path)
         self._media.add(event.dest_path)
 
-        messenger.info('Move file from "{}" to "{}"'.format(event.src_path,
-                                                            event.dest_path))
+        messenger.info(
+            f'Move file from "{event.src_path}" to "{event.dest_path}"')
 
         if _current.clip == event.src_path:
             _ff.decoder.terminate()
@@ -122,8 +122,7 @@ class MediaWatcher:
     def on_deleted(self, event):
         self._media.remove(event.src_path)
 
-        messenger.info(
-            'Remove file from media list: "{}"'.format(event.src_path))
+        messenger.info(f'Remove file from media list: "{event.src_path}"')
 
         if _current.clip == event.src_path:
             _ff.decoder.terminate()
diff --git a/ffplayout/output/desktop.py b/ffplayout/output/desktop.py
index 0a2a393a..d43100a8 100644
--- a/ffplayout/output/desktop.py
+++ b/ffplayout/output/desktop.py
@@ -21,16 +21,15 @@ def output():
     ff_pre_settings = [
         '-pix_fmt', 'yuv420p', '-r', str(_pre.fps),
         '-c:v', 'mpeg2video', '-intra',
-        '-b:v', '{}k'.format(_pre.v_bitrate),
-        '-minrate', '{}k'.format(_pre.v_bitrate),
-        '-maxrate', '{}k'.format(_pre.v_bitrate),
-        '-bufsize', '{}k'.format(_pre.v_bufsize)
+        '-b:v', f'{_pre.v_bitrate}k',
+        '-minrate', f'{_pre.v_bitrate}k',
+        '-maxrate', f'{_pre.v_bitrate}k',
+        '-bufsize', f'{_pre.v_bufsize}k'
         ] + pre_audio_codec() + ['-f', 'mpegts', '-']
 
     if _text.add_text and not _text.over_pre:
-        messenger.info('Using drawtext node, listening on address: {}'.format(
-            _text.address
-        ))
+        messenger.info(
+            f'Using drawtext node, listening on address: {_text.address}')
         overlay = [
             '-vf',
             "null,zmq=b=tcp\\\\://'{}',drawtext=text='':fontfile='{}'".format(
@@ -38,9 +37,13 @@ def output():
         ]
 
     try:
-        _ff.encoder = Popen([
+        enc_cmd = [
             'ffplay', '-hide_banner', '-nostats', '-i', 'pipe:0'
-            ] + overlay, stderr=PIPE, stdin=PIPE, stdout=None)
+            ] + overlay
+
+        messenger.debug(f'Encoder CMD: "{" ".join(enc_cmd)}"')
+
+        _ff.encoder = Popen(enc_cmd, stderr=PIPE, stdin=PIPE, stdout=None)
 
         enc_err_thread = Thread(target=ffmpeg_stderr_reader,
                                 args=(_ff.encoder.stderr, False))
@@ -58,20 +61,21 @@ def output():
 
         try:
             for src_cmd in get_source.next():
-                messenger.debug('src_cmd: "{}"'.format(src_cmd))
                 if src_cmd[0] == '-i':
                     current_file = src_cmd[1]
                 else:
                     current_file = src_cmd[3]
 
                 _current.clip = current_file
-                messenger.info('Play: "{}"'.format(current_file))
+                messenger.info(f'Play: {current_file}')
 
-                with Popen([
-                    'ffmpeg', '-v', _log.ff_level.lower(), '-hide_banner',
-                    '-nostats'] + src_cmd + ff_pre_settings,
-                        stdout=PIPE, stderr=PIPE) as _ff.decoder:
+                dec_cmd = ['ffmpeg', '-v', _log.ff_level.lower(),
+                           '-hide_banner', '-nostats'
+                           ] + src_cmd + ff_pre_settings
 
+                messenger.debug(f'Decoder CMD: "{" ".join(dec_cmd)}"')
+
+                with Popen(dec_cmd, stdout=PIPE, stderr=PIPE) as _ff.decoder:
                     dec_err_thread = Thread(target=ffmpeg_stderr_reader,
                                             args=(_ff.decoder.stderr, True))
                     dec_err_thread.daemon = True
diff --git a/ffplayout/output/stream.py b/ffplayout/output/stream.py
index 49bf9de3..d1d964ac 100644
--- a/ffplayout/output/stream.py
+++ b/ffplayout/output/stream.py
@@ -23,16 +23,15 @@ def output():
     ff_pre_settings = [
         '-pix_fmt', 'yuv420p', '-r', str(_pre.fps),
         '-c:v', 'mpeg2video', '-intra',
-        '-b:v', '{}k'.format(_pre.v_bitrate),
-        '-minrate', '{}k'.format(_pre.v_bitrate),
-        '-maxrate', '{}k'.format(_pre.v_bitrate),
-        '-bufsize', '{}k'.format(_pre.v_bufsize)
+        '-b:v', f'{_pre.v_bitrate}k',
+        '-minrate', f'{_pre.v_bitrate}k',
+        '-maxrate', f'{_pre.v_bitrate}k',
+        '-bufsize', f'{_pre.v_bufsize}k'
         ] + pre_audio_codec() + ['-f', 'mpegts', '-']
 
     if _text.add_text and not _text.over_pre:
-        messenger.info('Using drawtext node, listening on address: {}'.format(
-            _text.address
-        ))
+        messenger.info(
+            f'Using drawtext node, listening on address: {_text.address}')
         overlay = [
             '-vf',
             "null,zmq=b=tcp\\\\://'{}',drawtext=text='':fontfile='{}'".format(
@@ -40,15 +39,18 @@ def output():
         ]
 
     try:
-        _ff.encoder = Popen([
+        enc_cmd = [
             'ffmpeg', '-v', _log.ff_level.lower(), '-hide_banner',
             '-nostats', '-re', '-thread_queue_size', '256', '-i', 'pipe:0'
             ] + overlay + [
                 '-metadata', 'service_name=' + _playout.name,
                 '-metadata', 'service_provider=' + _playout.provider,
-                '-metadata', 'year={}'.format(year)
-            ] + _playout.ffmpeg_param + _playout.stream_output,
-            stdin=PIPE, stderr=PIPE)
+                '-metadata', f'year={year}'
+            ] + _playout.ffmpeg_param + _playout.stream_output
+
+        messenger.debug(f'Encoder CMD: "{" ".join(enc_cmd)}"')
+
+        _ff.encoder = Popen(enc_cmd, stdin=PIPE, stderr=PIPE)
 
         enc_err_thread = Thread(target=ffmpeg_stderr_reader,
                                 args=(_ff.encoder.stderr, False))
@@ -66,20 +68,21 @@ def output():
 
         try:
             for src_cmd in get_source.next():
-                messenger.debug('src_cmd: "{}"'.format(src_cmd))
                 if src_cmd[0] == '-i':
                     current_file = src_cmd[1]
                 else:
                     current_file = src_cmd[3]
 
                 _current.clip = current_file
-                messenger.info('Play: "{}"'.format(current_file))
+                messenger.info(f'Play: {current_file}')
 
-                with Popen([
-                    'ffmpeg', '-v', _log.ff_level.lower(), '-hide_banner',
-                    '-nostats'] + src_cmd + ff_pre_settings,
-                        stdout=PIPE, stderr=PIPE) as _ff.decoder:
+                dec_cmd = ['ffmpeg', '-v', _log.ff_level.lower(),
+                           '-hide_banner', '-nostats'
+                           ] + src_cmd + ff_pre_settings
 
+                messenger.debug(f'Decoder CMD: "{" ".join(dec_cmd)}"')
+
+                with Popen(dec_cmd, stdout=PIPE, stderr=PIPE) as _ff.decoder:
                     dec_err_thread = Thread(target=ffmpeg_stderr_reader,
                                             args=(_ff.decoder.stderr, True))
                     dec_err_thread.daemon = True
diff --git a/ffplayout/playlist.py b/ffplayout/playlist.py
index ccd03ca9..9982363a 100644
--- a/ffplayout/playlist.py
+++ b/ffplayout/playlist.py
@@ -25,7 +25,7 @@ from urllib import request
 
 from .filters.default import build_filtergraph
 from .utils import (MediaProbe, _playlist, gen_filler, get_date, get_delta,
-                    get_time, is_float, messenger, stdin_args, timed_source,
+                    get_float, get_time, messenger, stdin_args, timed_source,
                     valid_json, validate_thread)
 
 
@@ -58,6 +58,9 @@ class GetSourceFromPlaylist:
         self.last = False
         self.list_date = get_date(True)
 
+        self.node = None
+        self.node_last = None
+        self.node_next = None
         self.src = None
         self.begin = 0
         self.seek = 0
@@ -107,61 +110,26 @@ class GetSourceFromPlaylist:
         else:
             self.clip_nodes = None
 
-    def get_clip_in_out(self, node):
-        if is_float(node["in"]):
-            self.seek = node["in"]
-        else:
-            self.seek = 0
-
-        if is_float(node["duration"]):
-            self.duration = node["duration"]
-        else:
-            self.duration = 20
-
-        if is_float(node["out"]):
-            self.out = node["out"]
-        else:
-            self.out = self.duration
-
     def get_input(self):
         self.src_cmd, self.seek, self.out, self.next_playlist = timed_source(
             self.probe, self.src, self.begin, self.duration,
             self.seek, self.out, self.first, self.last
         )
 
-    def get_category(self, index, node):
-        if 'category' in node:
-            if index - 1 >= 0:
-                last_category = self.clip_nodes[
-                    "program"][index - 1]["category"]
-            else:
-                last_category = 'noad'
+    def last_and_next_node(self, index):
+        if index - 1 >= 0:
+            self.node_last = self.clip_nodes['program'][index - 1]
+        else:
+            self.node_last = None
 
-            if index + 2 <= len(self.clip_nodes["program"]):
-                next_category = self.clip_nodes[
-                    "program"][index + 1]["category"]
-            else:
-                next_category = 'noad'
-
-            if node["category"] == 'advertisement':
-                self.ad = True
-            else:
-                self.ad = False
-
-            if last_category == 'advertisement':
-                self.ad_last = True
-            else:
-                self.ad_last = False
-
-            if next_category == 'advertisement':
-                self.ad_next = True
-            else:
-                self.ad_next = False
+        if index + 2 <= len(self.clip_nodes['program']):
+            self.node_next = self.clip_nodes['program'][index + 1]
+        else:
+            self.node_next = None
 
     def set_filtergraph(self):
         self.filtergraph = build_filtergraph(
-            self.duration, self.seek, self.out, self.ad, self.ad_last,
-            self.ad_next, self.probe, messenger)
+            self.node, self.node_last, self.node_next, self.seek, self.probe)
 
     def check_for_next_playlist(self):
         if not self.next_playlist:
@@ -207,13 +175,13 @@ class GetSourceFromPlaylist:
 
         self.last = False
 
-    def peperation_task(self, index, node):
+    def peperation_task(self, index):
         # call functions in order to prepare source and filter
-        self.src = node["source"]
+        self.src = self.node['source']
         self.probe.load(self.src)
 
         self.get_input()
-        self.get_category(index, node)
+        self.last_and_next_node(index)
         self.set_filtergraph()
         self.check_for_next_playlist()
 
@@ -223,30 +191,32 @@ class GetSourceFromPlaylist:
 
             if self.clip_nodes is None:
                 self.eof_handling(
-                    'No valid playlist:\n{}'.format(self.json_file), True, 30)
+                    f'No valid playlist:\n{self.json_file}', True, 30)
                 yield self.src_cmd + self.filtergraph
                 continue
 
             self.begin = self.init_time
 
             # loop through all clips in playlist and get correct clip in time
-            for index, node in enumerate(self.clip_nodes["program"]):
-                self.get_clip_in_out(node)
+            for index, self.node in enumerate(self.clip_nodes['program']):
+                self.seek = get_float(self.node['in'], 0)
+                self.duration = get_float(self.node['duration'], 20)
+                self.out = get_float(self.node['out'], self.duration)
 
                 # first time we end up here
                 if self.first and \
                         self.last_time < self.begin + self.out - self.seek:
 
-                    self.peperation_task(index, node)
+                    self.peperation_task(index)
                     self.first = False
                     break
                 elif self.last_time < self.begin:
-                    if index + 1 == len(self.clip_nodes["program"]):
+                    if index + 1 == len(self.clip_nodes['program']):
                         self.last = True
                     else:
                         self.last = False
 
-                    self.peperation_task(index, node)
+                    self.peperation_task(index)
                     break
 
                 self.begin += self.out - self.seek
diff --git a/ffplayout/utils.py b/ffplayout/utils.py
index ee44f23e..aeba47a5 100644
--- a/ffplayout/utils.py
+++ b/ffplayout/utils.py
@@ -32,6 +32,7 @@ from datetime import date, datetime, timedelta
 from email.mime.multipart import MIMEMultipart
 from email.mime.text import MIMEText
 from email.utils import formatdate
+from glob import glob
 from logging.handlers import TimedRotatingFileHandler
 from shutil import which
 from subprocess import STDOUT, CalledProcessError, check_output
@@ -40,13 +41,15 @@ from types import SimpleNamespace
 
 import yaml
 
+# path to user define configs
+CONFIG_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                           'config')
+
 # ------------------------------------------------------------------------------
 # argument parsing
 # ------------------------------------------------------------------------------
 
-stdin_parser = ArgumentParser(
-    description='python and ffmpeg based playout',
-    epilog="don't use parameters if you want to use this settings from config")
+stdin_parser = ArgumentParser(description='python and ffmpeg based playout')
 
 stdin_parser.add_argument(
     '-c', '--config', help='file path to ffplayout.conf'
@@ -82,6 +85,19 @@ stdin_parser.add_argument(
     help='set length in "hh:mm:ss", "none" for no length check'
 )
 
+# read dynamical new arguments
+for arg_file in glob(os.path.join(CONFIG_PATH, 'argparse_*')):
+    with open(arg_file, 'r') as _file:
+        config = yaml.safe_load(_file)
+
+    short = config.pop('short') if config.get('short') else None
+    long = config.pop('long') if config.get('long') else None
+
+    stdin_parser.add_argument(
+        *filter(None, [short, long]),
+        **config
+    )
+
 stdin_args = stdin_parser.parse_args()
 
 
@@ -270,7 +286,7 @@ class CustomFormatter(logging.Formatter):
     }
 
     def format_message(self, msg):
-        if '"' in msg and '[' in msg:
+        if '"' in msg:
             msg = re.sub('(".*?")', self.cyan + r'\1' + self.reset, msg)
         elif '[decoder]' in msg:
             msg = re.sub(r'(\[decoder\])', self.reset + r'\1', msg)
@@ -377,7 +393,7 @@ class Mailer:
             message['To'] = _mail.recip
             message['Subject'] = _mail.subject
             message['Date'] = formatdate(localtime=True)
-            message.attach(MIMEText('{} {}'.format(self.time, msg), 'plain'))
+            message.attach(MIMEText(f'{self.time} {msg}', 'plain'))
             text = message.as_string()
 
             try:
@@ -463,7 +479,7 @@ def is_in_system(name):
     Check whether name is on PATH and marked as executable
     """
     if which(name) is None:
-        messenger.error('{} is not found on system'.format(name))
+        messenger.error(f'{name} is not found on system')
         sys.exit(1)
 
 
@@ -483,7 +499,7 @@ def ffmpeg_libs():
         info = check_output(cmd, stderr=STDOUT).decode('UTF-8')
     except CalledProcessError as err:
         messenger.error('ffmpeg - libs could not be readed!\n'
-                        'Processing is not possible. Error:\n{}'.format(err))
+                        f'Processing is not possible. Error:\n{err}')
         sys.exit(1)
 
     for line in info.split('\n'):
@@ -550,8 +566,7 @@ class MediaProbe:
         try:
             info = json.loads(check_output(cmd).decode('UTF-8'))
         except CalledProcessError as err:
-            messenger.error('MediaProbe error in: "{}"\n {}'.format(self.src,
-                                                                    err))
+            messenger.error(f'MediaProbe error in: "{self.src}"\n{err}')
             self.audio.append(None)
             self.video.append(None)
 
@@ -564,12 +579,12 @@ class MediaProbe:
                 self.audio.append(stream)
 
             if stream['codec_type'] == 'video':
-                if 'display_aspect_ratio' not in stream:
-                    stream['aspect'] = float(
-                        stream['width']) / float(stream['height'])
-                else:
+                if stream.get('display_aspect_ratio'):
                     w, h = stream['display_aspect_ratio'].split(':')
                     stream['aspect'] = float(w) / float(h)
+                else:
+                    stream['aspect'] = float(
+                        stream['width']) / float(stream['height'])
 
                 a, b = stream['r_frame_rate'].split('/')
                 stream['fps'] = float(a) / float(b)
@@ -628,14 +643,11 @@ def ffmpeg_stderr_reader(std_errors, decoder):
     try:
         for line in std_errors:
             if _log.ff_level == 'INFO':
-                logger.info('{}{}'.format(
-                    prefix, line.decode("utf-8").rstrip()))
+                logger.info(f'{prefix}{line.decode("utf-8").rstrip()}')
             elif _log.ff_level == 'WARNING':
-                logger.warning('{}{}'.format(
-                    prefix, line.decode("utf-8").rstrip()))
+                logger.warning(f'{prefix}{line.decode("utf-8").rstrip()}')
             else:
-                logger.error('{}{}'.format(
-                    prefix, line.decode("utf-8").rstrip()))
+                logger.error(f'{prefix}{line.decode("utf-8").rstrip()}')
     except ValueError:
         pass
 
@@ -648,32 +660,28 @@ def get_date(seek_day):
     """
     d = date.today()
     if seek_day and get_time('full_sec') < _playlist.start:
-        yesterday = d - timedelta(1)
-        return yesterday.strftime('%Y-%m-%d')
+        return (d - timedelta(1)).strftime('%Y-%m-%d')
     else:
+        if _playlist.start == 0 and \
+                4 > 86400.0 - get_time('full_sec') > 0:
+            return (d + timedelta(1)).strftime('%Y-%m-%d')
+
         return d.strftime('%Y-%m-%d')
 
 
-def is_float(value):
+def get_float(value, default=False):
     """
     test if value is float
     """
     try:
-        float(value)
-        return True
+        return float(value)
     except (ValueError, TypeError):
-        return False
+        return default
 
 
-def is_int(value):
-    """
-    test if value is int
-    """
-    try:
-        int(value)
+def is_advertisement(node):
+    if node and node.get('category') == 'advertisement':
         return True
-    except ValueError:
-        return False
 
 
 def valid_json(file):
@@ -684,7 +692,7 @@ def valid_json(file):
         json_object = json.load(file)
         return json_object
     except ValueError:
-        messenger.error("Playlist {} is not JSON conform".format(file))
+        messenger.error(f'Playlist {file} is not JSON conform')
         return None
 
 
@@ -699,8 +707,8 @@ def check_sync(delta):
 
     if _general.stop and abs(delta) > _general.threshold:
         messenger.error(
-            'Sync tolerance value exceeded with {0:.2f} seconds,\n'
-            'program terminated!'.format(delta))
+            f'Sync tolerance value exceeded with {delta:.2f} seconds,\n'
+            'program terminated!')
         terminate_processes()
         sys.exit(1)
 
@@ -712,11 +720,9 @@ def check_length(total_play_time):
     if _playlist.length and total_play_time < _playlist.length - 5 \
             and not stdin_args.loop:
         messenger.error(
-            'Playlist ({}) is not long enough!\n'
-            'Total play time is: {}, target length is: {}'.format(
-                get_date(True),
-                timedelta(seconds=total_play_time),
-                timedelta(seconds=_playlist.length))
+            f'Playlist ({get_date(True)}) is not long enough!\n'
+            f'Total play time is: {timedelta(seconds=total_play_time)}, '
+            f'target length is: {timedelta(seconds=_playlist.length)}'
         )
 
 
@@ -735,29 +741,35 @@ def validate_thread(clip_nodes):
             source = node["source"]
             probe.load(source)
             missing = []
+            _in = get_float(node.get('in'), 0)
+            _out = get_float(node.get('out'), 0)
+            duration = get_float(node.get('duration'), 0)
 
             if probe.is_remote:
                 if not probe.video[0]:
-                    missing.append('Stream not exist: "{}"'.format(source))
+                    missing.append(f'Stream not exist: "{source}"')
             elif not os.path.isfile(source):
-                missing.append('File not exist: "{}"'.format(source))
+                missing.append(f'File not exist: "{source}"')
 
-            if is_float(node["in"]) and is_float(node["out"]):
-                counter += node["out"] - node["in"]
-            else:
-                missing.append('Missing Value in: "{}"'.format(node))
+            if not node.get('in') == 0 and not _in:
+                missing.append(f'No in Value in: "{node}"')
 
-            if not is_float(node["duration"]):
-                missing.append('No duration Value!')
+            if not node.get('out') and not _out:
+                missing.append(f'No out Value in: "{node}"')
+
+            if not node.get('duration') and not duration:
+                missing.append(f'No duration Value in: "{node}"')
+
+            counter += _out - _in
 
             line = '\n'.join(missing)
             if line:
-                error += line + '\nIn line: {}\n\n'.format(node)
+                error += line + f'\nIn line: {node}\n\n'
 
         if error:
             messenger.error(
                 'Validation error, check JSON playlist, '
-                'values are missing:\n{}'.format(error)
+                f'values are missing:\n{error}'
             )
 
         check_length(counter)
@@ -790,9 +802,8 @@ def set_length(duration, seek, out):
 def loop_input(source, src_duration, target_duration):
     # loop filles n times
     loop_count = math.ceil(target_duration / src_duration)
-    messenger.info(
-        'Loop "{0}" {1} times, total duration: {2:.2f}'.format(
-            source, loop_count, target_duration))
+    messenger.info(f'Loop "{source}" {loop_count} times, '
+                   f'total duration: {target_duration:.2f}')
     return ['-stream_loop', str(loop_count),
             '-i', source, '-t', str(target_duration)]
 
@@ -806,11 +817,9 @@ def gen_dummy(duration):
     # noise = 'noise=alls=50:allf=t+u,hue=s=0'
     return [
         '-f', 'lavfi', '-i',
-        'color=c={}:s={}x{}:d={}:r={},format=pix_fmts=yuv420p'.format(
-            color, _pre.w, _pre.h, duration, _pre.fps
-        ),
-        '-f', 'lavfi', '-i', 'anoisesrc=d={}:c=pink:r=48000:a=0.05'.format(
-            duration)
+        f'color=c={color}:s={_pre.w}x{_pre.h}:d={duration}:r={_pre.fps},'
+        'format=pix_fmts=yuv420p',
+        '-f', 'lavfi', '-i', f'anoisesrc=d={duration}:c=pink:r=48000:a=0.05'
     ]
 
 
@@ -822,12 +831,12 @@ def gen_filler(duration):
     probe.load(_storage.filler)
 
     if probe.format:
-        if 'duration' in probe.format:
+        if probe.format.get('duration'):
             filler_duration = float(probe.format['duration'])
             if filler_duration > duration:
                 # cut filler
                 messenger.info(
-                    'Generate filler with {0:.2f} seconds'.format(duration))
+                    f'Generate filler with {duration:.2f} seconds')
                 return probe, ['-i', _storage.filler] + set_length(
                     filler_duration, 0, duration)
             else:
@@ -854,13 +863,13 @@ def src_or_dummy(probe, src, dur, seek, out):
     if probe.is_remote and probe.video[0]:
         if seek > 0.0:
             messenger.warning(
-                'Seek in live source "{}" not supported!'.format(src))
+                f'Seek in live source "{src}" not supported!')
         return ['-i', src] + set_length(86400.0, seek, out)
     elif src and os.path.isfile(src):
         if out > dur:
             if seek > 0.0:
                 messenger.warning(
-                    'Seek in looped source "{}" not supported!'.format(src))
+                    f'Seek in looped source "{src}" not supported!')
                 return ['-i', src] + set_length(dur, seek, out - seek)
             else:
                 # FIXME: when list starts with looped clip,
@@ -869,7 +878,7 @@ def src_or_dummy(probe, src, dur, seek, out):
         else:
             return seek_in(seek) + ['-i', src] + set_length(dur, seek, out)
     else:
-        messenger.error('Clip/URL not exist:\n{}'.format(src))
+        messenger.error(f'Clip/URL not exist:\n{src}')
         return gen_dummy(out - seek)
 
 
@@ -938,30 +947,27 @@ def handle_list_end(probe, new_length, src, begin, dur, seek, out):
     if new_out > dur:
         new_out = dur
     else:
-        messenger.info(
-            'We are over time, new length is: {0:.2f}'.format(new_length))
+        messenger.info(f'We are over time, new length is: {new_length:.2f}')
 
     missing_secs = abs(new_length - (dur - seek))
 
     if dur > new_length > 1.5 and dur - seek >= new_length:
         src_cmd = src_or_dummy(probe, src, dur, seek, new_out)
     elif dur > new_length > 0.0:
-        messenger.info(
-            'Last clip less then 1.5 second long, skip:\n{}'.format(src))
+        messenger.info(f'Last clip less then 1.5 second long, skip:\n{src}')
         src_cmd = None
 
         if missing_secs > 2:
             new_playlist = False
             messenger.error(
-                'Reach playlist end,\n{0:.2f} seconds needed.'.format(
-                    missing_secs))
+                f'Reach playlist end,\n{missing_secs:.2f} seconds needed.')
     else:
         new_out = out
         new_playlist = False
         src_cmd = src_or_dummy(probe, src, dur, seek, out)
         messenger.error(
-            'Playlist is not long enough:'
-            '\n{0:.2f} seconds needed.'.format(missing_secs))
+            f'Playlist is not long enough:\n{missing_secs:.2f} seconds needed.'
+            )
 
     return src_cmd, seek, new_out, new_playlist
 
@@ -981,14 +987,14 @@ def timed_source(probe, src, begin, dur, seek, out, first, last):
             return src_or_dummy(probe, src, dur, _seek, _out), \
                 _seek, _out, new_list
         else:
-            messenger.warning('Clip less then a second, skip:\n{}'.format(src))
+            messenger.warning(f'Clip less then a second, skip:\n{src}')
             return None, 0, 0, True
 
     else:
         if not stdin_args.loop and _playlist.length:
             check_sync(current_delta)
-            messenger.debug('current_delta: {:f}'.format(current_delta))
-            messenger.debug('total_delta: {:f}'.format(total_delta))
+            messenger.debug(f'current_delta: {current_delta:f}')
+            messenger.debug(f'total_delta: {total_delta:f}')
 
         if (total_delta > out - seek and not last) \
                 or stdin_args.loop or not _playlist.length:
@@ -996,8 +1002,7 @@ def timed_source(probe, src, begin, dur, seek, out, first, last):
             return src_or_dummy(probe, src, dur, seek, out), seek, out, False
 
         elif total_delta <= 0:
-            messenger.info(
-                'Start time is over playtime, skip clip:\n{}'.format(src))
+            messenger.info(f'Start time is over playtime, skip clip:\n{src}')
             return None, 0, 0, True
 
         elif total_delta < out - seek or last: