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• Why every audio part louder in FFmpeg while I join them in one audio ?

  13 mai 2024, par Volodymyr Bilovus

  I trying to make dubbing for audio. I have original audio track and I want to put translated audio parts on top of the original.

  


  translated audio 100% vol : —p1--- ---p2— -----p3--- —p4—

  


  original audio 5% vol : -----------------------------------------

  


  Here is my FFmpeg command with filter_complex

  


  ffmpeg -i video_wpmXlZF4XiE.opus -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 \
-filter_complex "\
[0:a]loudnorm=I=-14:TP=-2:LRA=7, volume=0.05[original]; \
[1:a]loudnorm=I=-14:TP=-2:LRA=7, adelay=5000|5000, volume=1.0[sent1]; \
[2:a]loudnorm=I=-14:TP=-2:LRA=7, adelay=10000|10000, volume=1.0[sent2]; \
[3:a]loudnorm=I=-14:TP=-2:LRA=7, adelay=20000|20000, volume=1.0[sent3]; \
[4:a]loudnorm=I=-14:TP=-2:LRA=7, adelay=30000|30000, volume=1.0[sent4]; \
[original][sent1][sent2][sent3][sent4]amix=inputs=5:duration=longest[out]" \
-map "[out]" output.mp3


  


  Audios I put on top of the original audio track is the same -i 989-audio.mp3 I made it by purpose to show the problem
And here is the audio levels on final generated track.


  


  As you can see, first and second only slightly different but third
and fourth have totally different(higher) volume level (Notice, audio is the same).
Why it's happened. And how can I workaround this odd behaviour ?

  


• ffmpeg , copy 1st video "codec info" into 2nd video (change 2nd video codec)

  12 juillet 2016, par Tomer

  I’m having 2 videos.
  1st video is the master, it’s codec info needs to be encoded on the 2nd video.
  Means, 2nd video codec will be same as the 1st one.

  I’m having 15 "1st videos" for "Master" codec info and one file that needs to be converted to the various codecs that each file contain.

  Folder contains those files "1st video" :

  2CIF.h264 , 4CIF.h264 , 5MP.h264 , CIF.H264 , CUSTOM.h264 , CUSTOM2.h264 , 
  
  D1.h264 , HD1080.h264 , HD720.h264 , QVGA.h264 , QXGA.h264 , S5020_HD720_15FPS_1Min.mp4 , 
  
  SVGA.h264 , UXGA.h264 , VGA.h264

  and the "2nd video" that needs to be converted is : TOM.MP4

  An output of HD720.h264 for example is :

  Input #0, h264, from 'HD720.h264':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0:0: Video: h264 (Main), yuv420p, 1280x720, 25 fps, 25 tbr, 1200k tbn, 50 tbc

  An output of TOM.MP4 is :

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'TOM.mp4':
  
      Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x
  
  720, 14013 kb/s, 30.01 fps, 30 tbr, 90k tbn, 180k tbc (default)

  what will be the right way to convert those files ?

  I need to verify those settings ( got them through MediaInfo )

• How to convert CODEC of all videos in a folder from "Codec : MPEG-H Part2/HEVC (H.265) (hev1)" to "Codec : H264 - MPEG-4 AVC (part 10) (avc1)" [closed]

  19 mai 2024, par user25123807

  I've downloaded shows and cant get them to play on TV as the codec is not supported. H264 is a compatible codec. I have noted the codec of the videos I currently have (H256), and the codec which is compatible (264). I need help converting in bulk, all videos in a folder to the compatible codec - H264 - MPEG-4 AVC (part 10) (avc1).

  


  please help

  


  i have ffmpeg.

  


  I have tried changing the file type from mkv —> mp4 but the issue is the codec. I need help bulk converting the codec (265—>264). All the videos I am trying to convert to 264 are .mp4 videos.