X-Git-Url: https://git.mdrn.pl/audio.git/blobdiff_plain/651c3fcf0e96681e5dfeb5afbbc4900a9342beb3..4ed2ea5a00aa1293135923b513925c46b963be93:/src/youtube/utils.py

diff --git a/src/youtube/utils.py b/src/youtube/utils.py
index 5074c53..6c95c69 100644
--- a/src/youtube/utils.py
+++ b/src/youtube/utils.py
@@ -52,29 +52,29 @@ def video_from_image(img_path, duration, fps=25, cache=True):
 
 def cut_video(video_path, duration):
     return process_to_file(
-        ['ffmpeg', '-y', '-i', video_path, '-t', str(duration)],
+        ['ffmpeg', '-y', '-i', video_path, '-t', str(duration), '-c', 'copy'],
         'cut-',
         '.mkv'
     )
 
 
-def ffmpeg_concat(paths, suffix):
+def ffmpeg_concat(paths, suffix, copy=False):
     filelist = NamedTemporaryFile(prefix='concat-', suffix='.txt')
     for path in paths:
         filelist.write(f"file '{path}'\n".encode('utf-8'))
     filelist.flush()
 
-    outname = process_to_file(
-        ['ffmpeg', '-y', '-safe', '0', '-f', 'concat', '-i', filelist.name],
-        'concat-', suffix
-    )
+    args = ['ffmpeg', '-y', '-safe', '0', '-f', 'concat', '-i', filelist.name]
+    if copy:
+        args += ['-c', 'copy']
+    outname = process_to_file(args, 'concat-', suffix)
 
     filelist.close()
     return outname
 
 
 def concat_videos(paths):
-    return ffmpeg_concat(paths, '.mkv')
+    return ffmpeg_concat(paths, '.mkv', copy=True)
 
 
 def concat_audio(paths):
@@ -101,6 +101,7 @@ def mux(channels, output_path=None):
     args = ['ffmpeg', '-y']
     for c in channels:
         args.extend(['-i', c])
+    args.extend(['-c', 'copy'])
     return process_to_file(args, 'mux-', '.mkv', output_path=output_path)