diff --git a/src/filter/mod.rs b/src/filter/mod.rs
index b85d5d46..9c99aa68 100644
--- a/src/filter/mod.rs
+++ b/src/filter/mod.rs
@@ -74,23 +74,13 @@ fn deinterlace(field_order: &Option<String>, chain: &mut Filters) {
 
 fn pad(aspect: f64, chain: &mut Filters, config: &GlobalConfig) {
     if !is_close(aspect, config.processing.aspect, 0.03) {
-        if aspect < config.processing.aspect {
-            chain.add_filter(
-                &format!(
-                    "pad=ih*{}/{}/sar:ih:(ow-iw)/2:(oh-ih)/2",
-                    config.processing.width, config.processing.height
-                ),
-                "video",
-            )
-        } else if aspect > config.processing.aspect {
-            chain.add_filter(
-                &format!(
-                    "pad=iw:iw*{}/{}/sar:(ow-iw)/2:(oh-ih)/2",
-                    config.processing.width, config.processing.height
-                ),
-                "video",
-            )
-        }
+        chain.add_filter(
+            &format!(
+                "pad=max(iw\\,ih*({0}/{1})):ow/({0}/{1}):(ow-iw)/2:(oh-ih)/2",
+                config.processing.width, config.processing.height
+            ),
+            "video",
+        )
     }
 }
 
diff --git a/src/input/playlist.rs b/src/input/playlist.rs
index 6606b329..bc497d66 100644
--- a/src/input/playlist.rs
+++ b/src/input/playlist.rs
@@ -12,7 +12,7 @@ use simplelog::*;
 
 use crate::utils::{
     check_sync, gen_dummy, get_delta, get_sec, is_close, json_serializer::read_json, modified_time,
-    seek_and_length, validate_source, GlobalConfig, Media, PlayoutStatus, DUMMY_LEN,
+    seek_and_length, valid_source, GlobalConfig, Media, PlayoutStatus, DUMMY_LEN,
 };
 
 /// Struct for current playlist.
@@ -430,7 +430,7 @@ fn timed_source(
 
 /// Generate the source CMD, or when clip not exist, get a dummy.
 fn gen_source(config: &GlobalConfig, mut node: Media) -> Media {
-    if validate_source(&node.source) {
+    if valid_source(&node.source) {
         node.add_probe();
         node.cmd = Some(seek_and_length(
             node.source.clone(),
@@ -440,13 +440,13 @@ fn gen_source(config: &GlobalConfig, mut node: Media) -> Media {
         ));
         node.add_filter(config);
     } else {
-        if node.source.chars().count() == 0 {
+        if node.source.is_empty() {
             warn!(
                 "Generate filler with <yellow>{:.2}</> seconds length!",
                 node.out - node.seek
             );
         } else {
-            error!("File not found: <b><magenta>{}</></b>", node.source);
+            error!("Source not found: <b><magenta>{}</></b>", node.source);
         }
         let (source, cmd) = gen_dummy(config, node.out - node.seek);
         node.source = source;
diff --git a/src/utils/json_validate.rs b/src/utils/json_validate.rs
index f8eb7446..f16024bf 100644
--- a/src/utils/json_validate.rs
+++ b/src/utils/json_validate.rs
@@ -5,7 +5,7 @@ use std::sync::{
 
 use simplelog::*;
 
-use crate::utils::{sec_to_time, validate_source, GlobalConfig, MediaProbe, Playlist};
+use crate::utils::{sec_to_time, valid_source, GlobalConfig, MediaProbe, Playlist};
 
 /// Validate a given playlist, to check if:
 ///
@@ -28,7 +28,7 @@ pub fn validate_playlist(playlist: Playlist, is_terminated: Arc<AtomicBool>, con
             return;
         }
 
-        if validate_source(&item.source) {
+        if valid_source(&item.source) {
             let probe = MediaProbe::new(&item.source);
 
             if probe.format.is_none() {
@@ -40,7 +40,7 @@ pub fn validate_playlist(playlist: Playlist, is_terminated: Arc<AtomicBool>, con
             }
         } else {
             error!(
-                "File on position <yellow>{}</> not exists: <b><magenta>{}</></b>",
+                "Source on position <yellow>{}</> not exists: <b><magenta>{}</></b>",
                 sec_to_time(begin),
                 item.source
             );
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 949a6258..36362424 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -432,17 +432,11 @@ pub fn prepare_output_cmd(
 /// Validate input
 ///
 /// Check if input is a remote source, or from storage and see if it exists.
-pub fn validate_source(source: &str) -> bool {
+pub fn valid_source(source: &str) -> bool {
     let re = Regex::new(r"^https?://.*").unwrap();
 
-    if re.is_match(source) {
-        match MediaProbe::new(source).video_streams {
-            Some(_) => return true,
-            None => {
-                error!("Remote file not exist: {source}");
-                return false;
-            }
-        }
+    if re.is_match(source) && MediaProbe::new(source).video_streams.is_some() {
+        return true;
     }
 
     Path::new(&source).is_file()