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• FFMPEG sidechaincompress error initializing complex filters with invalid argument

  15 août 2022, par DevDevRun

  I am using FFMPEG to convert process various audio files.
When using the sidechaincompress filter, I found this command line to work on my personal Windows 10 machine but not working anymore on our Debian server.
Maybe this command is not working anymore on newer version, or am I missing something (a «’» in the commande line, or a package ?) on our Linux server ? We definitely need to use this sidechaincompress filter with two audio files « Assets » and « Main ».

  


  Here is the command we run :

  


  FFMPEG -i /var/asset.flac -i /var/main.flac -filter_complex "[1:a]asplit=2[sc][mix];[0:a][sc]sidechaincompress=threshold=0.05:ratio=11:release:3000[compr];[compr][mix]amix=normalize=0" /var/sidechain.flacs


  


  Linux version : ffmpeg version 4.3.4-0+deb11u1

  


  and it returns :

  


  ffmpeg version 4.3.4-0+deb11u1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --prefix=/usr --extra-version=0+deb11u1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  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
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, flac, from '/var/asset.flac':
  Metadata:
    encoder         : Lavf59.25.100
  Duration: 00:02:33.65, start: 0.000000, bitrate: 760 kb/s
    Stream #0:0: Audio: flac, 44100 Hz, stereo, s32 (24 bit)
Input #1, flac, from '/var/2-main.flac':
  Metadata:
    encoder         : Lavf58.45.100
  Duration: 00:02:33.65, start: 0.000000, bitrate: 1093 kb/s
    Stream #1:0: Audio: flac, 44100 Hz, stereo, s32 (24 bit)
[sidechaincompress @ 0x5622749721c0] [Eval @ 0x7fff94caf520] Undefined constant or missing '(' in 'release'
[sidechaincompress @ 0x5622749721c0] Unable to parse option value "release"
[sidechaincompress @ 0x5622749721c0] Value 3000.000000 for parameter 'mode' out of range [0 - 1]
[sidechaincompress @ 0x5622749721c0] [Eval @ 0x7fff94caf550] Undefined constant or missing '(' in 'release'
[sidechaincompress @ 0x5622749721c0] Unable to parse option value "release"
[sidechaincompress @ 0x5622749721c0] Error setting option level_in to value release.
[Parsed_sidechaincompress_1 @ 0x5622749720c0] Error applying options to the filter.
[AVFilterGraph @ 0x56227493ea40] Error initializing filter 'sidechaincompress' with args 'threshold=0.05:ratio=11:release:3000'
Error initializing complex filters.
Invalid argument


  


• Image to Video Conversion in Laravel Using FFMpeg

  21 août 2022, par Yash Bohra

  i'm trying to convert a image into video with the use of FFMpeg in laravel. it generates the video but the the video duration is 0 second....

  


  Here is my code...

  


          $filename = $_FILES['video']['name'];
        $tempname = $_FILES['video']['tmp_name'];
        move_uploaded_file($tempname, storage_path('app/public/image2video/').$filename);

        FFMpeg::fromDisk('image2video')
            ->open($filename)
            ->addFilter('-loop', 3)
            // ->addFilter('-c:v', 'libx264')
            ->addFilter('-t', 3000)
            ->addFilter('-s', '1920x1080')
            // ->addFilter('-pix_fmt', 'yuv420p')
            ->export()
            ->toDisk('image2videoConverted')
            // ->dd('output.mp4');
            ->save('output.mp4');


  


  here is my FFMpeg Command which is generating

  


     ffmpeg -y -i C:/xampp/htdocs/laravel/textToSpeech2/storage/app/public/image2video/a.jpg -loop 3 -t 3000 -s 1920x1080 -threads 12 C:/xampp/htdocs/laravel/textToSpeech2/storage/app/image2videoConverted/output.mp4


  


  it converted the image into mp4 format and stored at my given location but the video length is 0 second.

  


• How to batch process a series of video files with powershell and other-transcode/ffmpeg

  7 juin 2022, par DarkDiamond

  TL ;DR

  


  What did I do wrong in the following PowerShell-Script ? It does not work as expected.

  


  ---

  


  I am recording some of my lectures in my university with a photo camera. This works pretty well although I have to split the single lecture into three to four parts because the camera can only record 29 minutes of video in one take. I know that this is a common issue related to some licensensing problem that most photo cameras simply don't have the right license to record longer videos. But it confronts me with the problem that I later have to edit the files together after I did some post processing on them.

  


  With the camera I produce up to four video files with sizes around 3.5 GB which is way to big in order to be of any use because our IT department understandably doesn't want to host so much data, as I produce around 22 GB of video material each week.

  


  Some time ago I came across a very useful tool called "other-video-transcoding" by Don Melton over on GitHub, written in ruby, that allows me to compress the files to a reasonable file size without any visual loss. In addition I crop the videos to remove the part of each frame that is neither the board nor a place where my professor stands in order to decrease the filesize even further and do some privacy protection by cutting out most of the students.

  


  As the tools are accessable via the command line, it is relatively easy to configure and does not cost additional computational power to render a nice gui, so I can edit one of the 29 minute clips in less than 10 minutes.

  


  Now I wanted to optimize my workflow by writing a PowerShell script that only takes the parameters what to crop and which files to work on and then does the rest on its own so I can just start the script and then do something else while my laptop renders the new files.

  


  So far I have the following :

  


  $video_path = Get-ChildItem ..\ -Directory | findstr "SoSe"

Get-ChildItem $video_path -name | findstr ".MP4" | Out-File temp.txt -Append 
Get-Content temp.txt | ForEach-Object {"file " + $_} >> .\files.txt

Get-ChildItem $video_path |
Foreach-Object {
other-transcode --hevc --mp4 --target 3000 --crop 1920:780:0:0 $_.FullName
}

#other-transcode --hevc --mp4 --crop 1920:720:60:0 ..\SoSe22_Theo1_videos_v14_RAW\
ffmpeg -f concat -i files.txt -c copy merged.mp4
Remove-Item .\temp.txt


  


  but it does not quite do what I it expect to do.
This is my file system :

  


  sciebo/
└── SoSe22_Theo1_videos/
    ├── SoSe22_Theo1_videos_v16/
    │   ├── SoSe22_Theo1_videos_v16_KOMPR/
    │   │   ├── C0001.mp4
    │   │   ├── C0002.mp4
    │   │   ├── C0003.mp4
    │   │   ├── C0004.mp4
    │   │   ├── temp.txt
    │   │   ├── files.txt
    │   │   └── merged.mp4
    │   └── SoSe22_Theo1_videos_v16_RAW/
    │       ├── C0001.mp4
    │       ├── C0002.mp4
    │       ├── C0003.mp4
    │       └── C0004.mp4
    └── SoSe22_Theo1_videos_v17/
        ├── SoSe22_Theo1_videos_v17_KOMPR
        └── SoSe22_Theo1_videos_v17_RAW/
            ├── C0006.mp4
            ├── C0007.mp4
            ├── C0008.mp4
            └── C0009.mp4


  


  where the 16th lecture is already processed and the 17th is not. I always have the raw video data in the folders ending on RAW and the edited/compressed output files in the one ending on KOMPR. Note that the video files in the KOMPR folder are the output files of the other-transcode tool.

  


  The real work happens in the line where it says

  


  other-transcode --hevc --mp4 --target 3000 --crop 1920:780:0:0 $_.FullName


  


  and in the line

  


  ffmpeg -f concat -i files.txt -c copy merged.mp4


  


  where I concat the output files into the final version I can upload to our online learning platform.
What is wrong with my script ? In the end I'd like to pass the --crop parameter just to my script, but that is not the primary problem.

  


  ---

  


  A little information on the transcoding script so you don't have to look into the documentation :
  
As the last argument the tool takes the location of the video files to work on, be it relative or absolute file paths. The output is placed in the folder the script is called in, so if I cd into one of the KOMPR directories and then call

  


  other-transcode --mp4 ../SoSe22_Theo1_videos_v16_RAW/C0001.mp4


  


  a new file C0001.mp4 is created in the KOMPR directory and the transcoded video and old audio are written to that new video file.