Recherche avancée

Sur d’autres sites (2690)

• Audio merging using ffmpeg : Error decoding a SILK frame

  29 janvier 2018, par arjuncc

  I am using following command to merge two audio files with ffmpeg. On the output file one of the audio is not audible. When these audios are taken separately both files are audible(mka file).

  ffmpeg  -i file1.mka -i file2.mka -filter_complex "[1]adelay=12509.000000|12509.000000[d];[0][d]amix=inputs=2" -strict
  
  -2 output_audio.webm

  I am getting following error in log

  [opus @ 000000fba65e22c0] Error decoding a SILK frame.
  
  [opus @ 000000fba65e22c0] Error decoding an Opus frame.
  
  [opus @ 000000fba65e22c0] LBRR frames is not implemented. Update your FFmpeg ver
  
  sion to the newest one from Git. If the problem still occurs, it means that your
  
   file has a feature which has not been implemented.

  I have had a hint form this and this link but It was also not helpful.

  Finally I converted file ’file2.mka’ into mp3 and merged with the first file, at that time audio is clear, also the synching is perfect. So I suppose data is not lost, It should be an issue with codec. Can anyone help ?
  I have also tried below command but no luck

  ffmpeg  -i file1.mka -i file2.mka -filter_complex "[1]adelay=12509.000000|12509.000000[d];[0][d]amix=inputs=2" -map 0:0 -c:a libopus -map 1:0  -strict -2 output_audio.webm

  Full implementation is given in this link

• Limit cpu limit of process in a loop

  6 octobre 2023, par chew socks

  I am trying to execute ffmpeg in a loop over multiple files. I only want one instance to run at a time, and to only use 50% of the cpu. I've been trying cpulimit but it isn't playing nice with the loop.

  



  for i in {1..9}; do cpulimit -l 50 -- ffmpeg <all the="the" options="options">; done&#xA;</all>

  



  This spawns all nine jobs at once, and they are all owned by init so I have to open htop to kill them.

  



  for i in {1..9}; do ffmpeg <all the="the" options="options"> &amp; cpulimit -p $! -l 50; done&#xA;</all>

  



  This hangs, ctrl+c continues to the next loop iteration. These instances can only be killed by SIGKILL.

  


• Laravel FFMpeg - FFMpeg cannot edit existing files in-place

  28 septembre 2020, par wlaskovic

  After I wanted to upload a video in the queue was returned a failed job.

  


   [2020-09-25 13:24:25][125] Processing: App\Jobs\ConvertVideoForStreaming <br /> [2020-09-25 13:24:26][125] Failed:     App\Jobs\ConvertVideoForStreaming&#xA;

  


  So I've took from the DB failed_jobs table the response and run the following :

  


    C:\ffmpeg\bin\ffmpeg.exe -y -i "C:\wamp64\www\laravel-stream\storage\app/public\WF3UL8fJTSE7BMxa.mp4" -threads 12 -vcodec libx264 -acodec libmp3lame -b:v 500k -refs 6 -coder 1 -sc_threshold 40 -flags +loop -me_range 16 -subq 7 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -trellis 1 -b:a 128k -vf "[in]scale=720:360 [out]" -pass 1 -passlogfile "C:\Users\wlask\AppData\Local\Temp\ffmpeg-passes5f6dd36a4519fd1fev/pass-5f6dd36a452c9" "C:\wamp64\www\laravel-stream\storage\app/public\WF3UL8fJTSE7BMxa.mp4"


  


  Which returned the following :

  


  ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10.2.1 (GCC) 20200726
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\wamp64\www\laravel-stream\storage\app/public\WF3UL8fJTSE7BMxa.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41isomavc1
    creation_time   : 2015-08-07T09:13:02.000000Z
  Duration: 00:00:30.53, start: 0.000000, bitrate: 411 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 480x270 [SAR 1:1 DAR 16:9], 301 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc (default)
    Metadata:
      creation_time   : 2015-08-07T09:13:02.000000Z
      handler_name    : L-SMASH Video Handler
      encoder         : AVC Coding
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 112 kb/s (default)
    Metadata:
      creation_time   : 2015-08-07T09:13:02.000000Z
      handler_name    : L-SMASH Audio Handler


  


  


  Output C :\wamp64\www\laravel-stream\storage\app/public\WF3UL8fJTSE7BMxa.mp4 same as Input #0 - exiting

  


  FFmpeg cannot edit existing files in-place.

  


  


  This was returned after i've run the command from DB failed jobs table return.

  


  How should I solve this ?