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• Video not playing on all browsers (FFMPEG)

  12 février 2021, par Mithradantor

  For days I have been struggeling with ffmpeg (PHP).

  


  I have a website where users can upload video's. Obviously people use .mov, .mp4 and .mpeg created by various devices such as cameras, mobile telephones, tablets and many more devices. The problem I have is that those movies either work on Firefox or Chrome, but almost never on both. No clue why, I guess it has to do with codecs and browser support.

  


  I am using FFMpeg to turn them into webm files. This works 95% of the time. In all browsers I have a working video and the sound works too. But sometimes there is no sound at all.

  


  When I open the movie in a other browser (or Windows media player for example) I do hear sound. It is so random to in what browser or software it works or does not work.

  


  Does anyone know of a way to make sure that your movies work in every browsers i.e. Chrome, FireFox and Safari with both video and audio ? and if so, how can I transform them and into what format (codecs ?)

  


  I dont mind converting a movie into three different formats, as long as both video and audio works.

  


  I hope someone can give me some advice. I have tried many ways but none work cross-browser so far.

  


  An example of the code that I use :

  


  $video->save(new FFMpeg\Format\Video\WebM(), 'export-webm.webm');


  


  Does anyone know how I can make it work on every browser ?

  


  What I already tried is (amongst others) :

  


  using an original mp3 or mov and convert it into webm with this code :

  


  ffmpeg -i origin.mov -c:a libvorbis -strict -2 -c:v libvpx-vp9 output.webm

  


  Unfortunately in FireFox i have visual and audio but in Chrome I have nothing, just a blank screen.

  


• use anullsrc in ffmpeg command

  7 juin 2019, par S.T

  I have ffmpeg command that i want to add anullsrc filter to it

  I tried to add the command in different places there but there is always a problem. the command is taking 2 movies and merging them to one movie side by side. the audio is the 2 movies together.

  This is the command :

  ffmpeg -i loop2.mp4 -i loop1.mp4 -i logo.png -filter_complex "[0:v]pad=width=iw+20:height=ih+20:x=10:y=10:color=black[a] ;[1:v]pad=width=iw+20:height=ih+20:x=10:y=10:color=black[b] ;nullsrc=size=640x480[base] ;[a]setpts=PTS-STARTPTS, scale=320x480[left] ;[b]setpts=PTS-STARTPTS, scale=320x480[right] ;[base][left]overlay=shortest=1[tmp1] ;[tmp1][right] overlay=320:0[video] ;[video]overlay=5:5[videoandlogo] ;[0:a]apad [apa] ;[apa][1:a]amerge=inputs=2,pan=stereo|FL

  In the command i have the nullsrc for the video and i want to add also the anullsrc for the audio.
  Can some one help ? Thanks.

  I have a problem when doing this command with the right file (always the right, even if i switched the files), the audio is not synced with the video and i think its because i didn’t use the anullsrc (maybe i am wrong). it happens only on files that i concat them - took one video, and concat it a few times to itself with a different command - loop, and created a new file. the looped video is synced, only the merge is destroying the audio sync (on regular files without loop the sync is good after the merge).
  Thanks.

• Error initializing filter 'pan' with args 'stereo:c0 c0+c2:c1 c1+c3'

  24 mai 2020, par Android Developer

  I run below FFmpeg command to merge audio and video keeping video's original audio using FFmpeg 4.0-39 version-

  



  -i /storage/emulated/0/Movies/extract_audio.mp3 -i /storage/emulated/0/Movies/VID-20200501-WA0000.mp4 -filter_complex [0:a][1:a]amerge,pan=stereo:c0storage/emulated/0/Movies/merge_video.mp4


  



  It fails for all videos with below error !However same command runs fine when using older version 3.0.1 of FFMpeg !

  



  FAILED with output : ffmpeg version n4.0-39-gda39990 Copyright (c) 2000-2018 the FFmpeg developers
      built with gcc 4.9.x (GCC) 20150123 (prerelease)
      configuration: --target-os=linux --cross-prefix=/root/bravobit/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/root/bravobit/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-ffprobe --enable-libopus --enable-libvorbis --enable-libfdk-aac --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-libvpx --enable-libass --enable-yasm --enable-pthreads --disable-debug --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-linux-perf --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --enable-nonfree --enable-network --enable-avresample --enable-avformat --enable-avcodec --enable-indev=lavfi --enable-hwaccels --enable-ffmpeg --enable-zlib --enable-gpl --enable-small --enable-nonfree --pkg-config=pkg-config --pkg-config-flags=--static --prefix=/root/bravobit/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/root/bravobit/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/root/bravobit/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-cxxflags=
      libavutil      56. 14.100 / 56. 14.100
      libavcodec     58. 18.100 / 58. 18.100
      libavformat    58. 12.100 / 58. 12.100
      libavdevice    58.  3.100 / 58.  3.100
      libavfilter     7. 16.100 /  7. 16.100
      libavresample   4.  0.  0 /  4.  0.  0
      libswscale      5.  1.100 /  5.  1.100
      libswresample   3.  1.100 /  3.  1.100
      libpostproc    55.  1.100 / 55.  1.100
    Input #0, mp3, from '/storage/emulated/0/Movies/extract_audio.mp3.mp4':
      Metadata:
        major_brand     : M4V 
        minor_version   : 512
        compatible_brands: isomiso2avc1
        encoder         : Lavf58.12.100
      Duration: 00:00:20.04, start: 0.025057, bitrate: 256 kb/s
        Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 256 kb/s
        Metadata:
          encoder         : Lavc58.18
    Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Movies/VID-20200501-WA0000.mp4.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2avc1mp41
        encoder         : Lavf58.20.100
      Duration: 00:00:09.83, start: 0.000000, bitrate: 809 kb/s
        Stream #1:0(und): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709), 480x600, 737 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
        Metadata:
          handler_name    : VideoHandler
        Stream #1:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64 kb/s (default)
        Metadata:
          handler_name    : SoundHandler
    [Parsed_pan_1 @ 0xaef0c000] This syntax is deprecated. Use '|' to separate the list items ('stereo|c0code>