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• Video won't play on iphone

  18 octobre 2016, par Merc

  I have an app that places videos online, and cannot find a way to get iPhones to actually play them.

  ffprobe says :

    merc@mercs-thinkpad:/disk/home/merc/Downloads$ ffprobe 5801005ff1861ba1729757fbffprobe version 2.8.8-0ubuntu0.16.04.1 Copyright (c) 2007-2016 the FFmpeg developers
  
      built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.2) 20160609
  
      configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  
      WARNING: library configuration mismatch
  
      avcodec     configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv --enable-version3 --disable-doc --disable-programs --disable-avdevice --disable-avfilter --disable-avformat --disable-avresample --disable-postproc --disable-swscale --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libvo_aacenc --enable-libvo_amrwbenc
  
      libavutil      54. 31.100 / 54. 31.100
  
      libavcodec     56. 60.100 / 56. 60.100
  
      libavformat    56. 40.101 / 56. 40.101
  
      libavdevice    56.  4.100 / 56.  4.100
  
      libavfilter     5. 40.101 /  5. 40.101
  
      libavresample   2.  1.  0 /  2.  1.  0
  
      libswscale      3.  1.101 /  3.  1.101
  
      libswresample   1.  2.101 /  1.  2.101
  
      libpostproc    53.  3.100 / 53.  3.100
  
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '5801005ff1861ba1729757fb':
  
      Metadata:
  
        major_brand     : isom
  
        minor_version   : 512
  
        compatible_brands: isomiso2avc1mp41
  
        encoder         : Lavf57.50.100
  
      Duration: 00:00:12.37, start: 0.021333, bitrate: 993 kb/s
  
        Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 928 kb/s, 29.83 fps, 29.83 tbr, 11456 tbn, 59.67 tbc (default)
  
        Metadata:
  
          handler_name    : VideoHandler
  
        Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 70 kb/s (default)
  
        Metadata:
  
          handler_name    : SoundHandler

  The video is here

  The file was created using ffmpeg from within the app.

  Is this a codec problem ? What shall I do to make sure iPhones can actually play them ?

• avcodec/pngdec : avoid erroring with sBIT on indexed-color images

  12 juillet 2024, par Leo Izen

  avcodec/pngdec : avoid erroring with sBIT on indexed-color images
  Indexed color images use three colors for sBIT, but the function
  
  ff_png_get_nb_channels returns 1 in this case. We should avoid erroring
  
  out on valid files in this scenario.
  Regression since 84b454935fae2633a8a5dd075e22393f3e8f932f.
  Signed-off-by : Leo Izen <leo.izen@gmail.com>
  
  Reported-by : Ramiro Polla <ramiro.polla@gmail.com>
  
  Reviewed-by : Marton Balint <cus@passwd.hu>
  

  • [DH] libavcodec/pngdec.c

• ffmpeg : change the grey color in showwaves line

  20 février 2018, par Andrew

  I’m trying to produce a video that has a lime green colored waveform overlayed on top of a background image. Unfortunately though, there is a grey color in the lines as you can see here :

  

  How can I make the grey parts lime green as well ?

  And if possible, I would like to make the lines thicker as well.

  Here is my ffmpeg command :

  ffmpeg -i input.aac -i background.jpg -filter_complex "[0:a]aformat=sample_fmts=s16:sample_rates=4410:channel_layouts=mono,showwaves=size=300x200:mode=p2p:rate=10:colors=#68b847[fg];[1:v][fg]overlay=130:150,format=yuv420p[v]" -map "[v]" -map 0:a -c:v libx264 -r 10 -c:a copy -r 10 -movflags +faststart output.mp4