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• lavc/libopenh264 : Support full range videos in transcoding

  18 avril 2023, par Jun Zhao

  lavc/libopenh264 : Support full range videos in transcoding
  Support full range videos when transcoding, enabled the
  
  YUVJ420P to avoid auto scale from YUVJ420P to YUV420P
  Signed-off-by : Jun Zhao <barryjzhao@tencent.com>
  

  • [DH] libavcodec/libopenh264enc.c

• How to make ffmpeg remux an iPhone MOV (HEVC) that works on Apple products ?

  21 janvier 2024, par Mikael Finstad

  I want to remux a HEVC file (without encoding). I have tried most options, even removing audio, but I cannot get an output file that plays smoothly with Apple products.

  



  First I AirDrop any MOV from an iPhone recorded with the camera in HEVC.

  



  Then run :

  



  ffmpeg -i IMG_4605.MOV -c copy out.mov


  



  Then if I send out.mov back to the iPhone and try to play it back, it plays back with glitches while seeking, like this : (original to the right)

  



  


  



  When I try to drag the file into a new iMovie project and try to play it back, it freezes the whole iMovie app and needs a force quit.

  



  Doing the same with the original causes no issues, so obviously there is something wrong with the way ffmpeg remuxes it, or something wrong with Apple's software.

  



  ffmpeg -i IMG_4605.MOV 
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IMG_4605.MOV':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    creation_time   : 2019-12-29T10:20:56.000000Z
    com.apple.quicktime.location.ISO6709: +01.3602+103.9897+024.438/
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 11
    com.apple.quicktime.software: 13.3
    com.apple.quicktime.creationdate: 2019-12-29T18:20:56+0800
  Duration: 00:00:09.00, start: 0.000000, bitrate: 24882 kb/s
    Stream #0:0(und): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, bt709), 3840x2160, 24659 kb/s, 29.99 fps, 29.97 tbr, 600 tbn, 600 tbc (default)
    Metadata:
      rotate          : 90
      creation_time   : 2019-12-29T10:20:56.000000Z
      handler_name    : Core Media Video
      encoder         : HEVC
    Side data:
      displaymatrix: rotation of -90.00 degrees
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      creation_time   : 2019-12-29T10:20:56.000000Z
      handler_name    : Core Media Audio
    Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2019-12-29T10:20:56.000000Z
      handler_name    : Core Media Metadata
    Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2019-12-29T10:20:56.000000Z
      handler_name    : Core Media Metadata
    Stream #0:4(und): Data: none (mebx / 0x7862656D), 17 kb/s (default)
    Metadata:
      creation_time   : 2019-12-29T10:20:56.000000Z
      handler_name    : Core Media Metadata


  



  ffmpeg -i out.mov
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 512
    compatible_brands: qt  
    encoder         : Lavf58.29.100
  Duration: 00:00:09.00, start: 0.000000, bitrate: 24860 kb/s
    Stream #0:0: Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, bt709), 3840x2160, 24659 kb/s, 29.99 fps, 29.97 tbr, 19200 tbn, 19200 tbc (default)
    Metadata:
      rotate          : 90
      handler_name    : Core Media Video
      encoder         : HEVC
    Side data:
      displaymatrix: rotation of -90.00 degrees
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio


  



  If I open out.mov in QuickTime and do a trim and export it, then it it still "broken", so I'm thinking there's nothing wrong with the actual muxing into MOV, because QuickTime is passing the error on.

  



  I noticed that out.mov has different parameters 19200 tbn, 19200 tbc (vs original 600 tbn, 600 tbc). However, if I force set these to 600 with -video_track_timescale 600 the output file is still broken.

  



  Anyone got some insights ?

  


• iphone ios sample ffplay main.c —> FFmpeg.c change and input parameter , following errer please advice

  4 août 2017, par 224ok

  FFmpeg main c source

  int main(int argc, char **argv)
  
  {
  
  
  
      int flags, i;
  
      argv[1] = "-i";
  
      argv[2] = "ipod-library://item/item.mp3?id=1218551163727305907";    
  
           //argv[2] = "mon.mp3";
  
  
  
      argv[3] = "-acodec";
  
      argv[4] = "libfaac";
  
      argv[5] = "-ac";
  
      argv[6] = "2";
  
      argv[7] = "-ar";
  
      argv[8] = "44100";
  
      argv[9] = "-ab";
  
      argv[10] = "128k";
  
      argv[11] = "output.aac";
  
      argv[3] = "-vn";
  
      argv[4] = "-acodec";
  
      argv[5] = "libfaac";
  
      argv[6] = "-ac";
  
      argv[7] = "2";
  
      argv[8] = "-ar";
  
      argv[9] = "44100";
  
      argv[10] = "-ab";
  
      argv[11] = "128k";
  
      argv[12] = "output.aac";
  
      //  argv[14] = "rtsp://video.bouygtel.fr/50400/tf1.sdp";
  
      argc += 12;

  error : ipod-library ://item/item.mp3 ?id=1218551163727305907 : No such file or directory
  and if
  argv[2] = "mon.mp3" ; ---> mon.mp3 : No such file or directory

  please advice.