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• Stream map '0:4' matches no streams

  17 juillet 2022, par Hugh

  When concat vob files to mkv with -map 0:4 I get this error. if I replace it with -map 0:4 ? the output contains no subtitles because the subtitle track I want doesn't start until further into the file. If I include -map 0:3 I just get the wrong subtitle track.

  


  ffmpeg -version
ffmpeg version 5.0.1-Jellyfin Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --prefix=/usr/lib/jellyfin-ffmpeg --target-os=linux --extra-libs=-lfftw3f --extra-version=Jellyfin --disable-doc --disable-ffplay --disable-ptx-compression --disable-shared --disable-libxcb --disable-sdl2 --disable-xlib --enable-lto --enable-gpl --enable-version3 --enable-static --enable-gmp --enable-gnutls --enable-chromaprint --enable-libdrm --enable-libass --enable-libfreetype --enable-libfribidi --enable-libfontconfig --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libdav1d --enable-libwebp --enable-libvpx --enable-libx264 --enable-libx265 --enable-libzvbi --enable-libzimg --enable-libfdk-aac --arch=amd64 --enable-libshaderc --enable-libplacebo --enable-vulkan --enable-opencl --enable-vaapi --enable-amf --enable-libmfx --enable-ffnvcodec --enable-cuda --enable-cuda-llvm --enable-cuvid --enable-nvdec --enable-nvenc
libavutil      57. 17.100 / 57. 17.100
libavcodec     59. 18.100 / 59. 18.100
libavformat    59. 16.100 / 59. 16.100
libavdevice    59.  4.100 / 59.  4.100
libavfilter     8. 24.100 /  8. 24.100
libswscale      6.  4.100 /  6.  4.100
libswresample   4.  3.100 /  4.  3.100
libpostproc    56.  3.100 / 56.  3.100


ffmpeg -analyzeduration 9000M -probesize 9000M -f concat -fflags +genpts -i mylist.txt -map 0:1 -map 0:2 -map 0:4? -metadata:s:s:0 language=eng -metadata:s:s:0 title="English" -c:s copy -c:v copy -c:a copy 'output.mkv'
...
Input #0, concat, from 'mylist.txt':
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0: Data: dvd_nav_packet
  Stream #0:1: Video: mpeg2video (Main), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn
    Side data:
      cpb: bitrate max/min/avg: 7000000/0/0 buffer size: 1835008 vbv_delay: N/A
  Stream #0:2: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  Stream #0:3: Subtitle: dvd_subtitle
Output #0, matroska, to 'output.mkv':
  Metadata:
    encoder         : Lavf59.16.100
  Stream #0:0: Video: mpeg2video (Main) (mpg2 / 0x3267706D), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], q=2-31, 25 fps, 25 tbr, 1k tbn
    Side data:
      cpb: bitrate max/min/avg: 7000000/0/0 buffer size: 1835008 vbv_delay: N/A
  Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 192 kb/s
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
  Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
[concat @ 0x555af2e17000] New subtitle stream 0:4 at pos:3141646 and DTS:10.96s  0x


  


  ...
Any ideas ?

  


• FFMEPG - How to resolve 'Reinit context to WxH ... deprecated pixel format'

  30 juin 2022, par hi im Bacon

  I am using the pyav library to read and process video data and as I am reading through the videos I am getting lots (and lots) of the following output.

  


  I am creating the videos by segmenting either a much larger source file or RTSP/HTTP IP camera.

  


  I would love to understand what this output actually means, and what I can do to prevent its output

  


  ffmpeg creating videos :

  


  ffmpeg -y -i https://manifest.googlevideo.com/api/... -pix_fmt yuvj422p -c:v libx264 -an -vf scale='min(1280,iw)':'min(720,ih)':force_original_aspect_ratio=decrease -r 12 -vsync cfr -x264opts keyint=12:min-keyint=12 -f segment -segment_format matroska -segment_time 5 -initial_offset 1656497474.686672 -strftime 1 /tmp/tmp87cc1n2o/%Y-%m-%dT%H%M%S.mkv -loglevel error


  


  python :

  


  container = av.open(io.BytesIO(...))
for frame in container.decode(video=0):
   ...


  


  2022-06-30 14:45:00,964 DEBUG:****:Creating <***.core.generators.av.AVGenerator object at 0x7f13340abd50> with target path: <_io.BytesIO object at 0x7f13341c93b0>
2022-06-30 14:45:00,966 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
2022-06-30 14:45:00,966 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuvj422p
2022-06-30 14:45:00,984 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
2022-06-30 14:45:01,045 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
2022-06-30 14:45:01,046 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuvj422p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 9 more times)
2022-06-30 14:45:01,194 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
2022-06-30 14:45:01,215 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 17 more times)
2022-06-30 14:45:01,384 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 3 more times)
2022-06-30 14:45:01,398 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 22 more times)
2022-06-30 14:45:01,550 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 2 more times)
2022-06-30 14:45:01,592 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p


  


• FFmpeg converting to .265 corrupts videos

  25 juin 2022, par Alfa

  I'm trying to convert and compress videos in React Native using FFmpegKit, what is strange is it is very slow regardless of the preset I use, Also, no matter how big the input video is, it always produces a video less than 1MB that is corrupt.
This is my first time using FFmpeg, I'm using it due to the lack of good video compressing libraries on React Native.

  


  My command looks like this :

  


  const getFFmpegCommand = (input: string, output: string) => {
  const scale = `"scale='if(gte(iw,ih),min(720,iw),-2):if(lt(iw,ih),min(720,ih),-2)'"`;
  const preset = '-preset veryfast ';
  const ffmpegCommand = `-i ${input} -y -crf 28 -vf ${scale} ${preset} -c:v libx265 ${output}`;
  return ffmpegCommand;
};


  


  This is my log output

  


      ffmpeg version v4.5-dev-3393-g30322ebe3c
    LOG   Copyright (c) 2000-2021 the FFmpeg developers
    LOG  
    LOG    built with Android (7155654, based on r399163b1) clang version 11.0.5 (https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d)
    LOG    configuration: --cross-prefix=i686-linux-android- --sysroot=/files/android-sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/storage/light/projects/ffmpeg-kit/prebuilt/android-x86/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=i686 --cpu=i686 --target-os=android --disable-neon --disable-asm --disable-inline-asm --ar=i686-linux-android-ar --cc=i686-linux-android24-clang --cxx=i686-linux-android24-clang++ --ranlib=i686-linux-android-ranlib --strip=i686-linux-android-strip --nm=i686-linux-android-nm --extra-libs='-L/storage/light/projects/ffmpeg-kit/prebuilt/android-x86/cpu-features/lib -lndk_compat' --disable-autodetect --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --disable-static --enable-shared --enable-pthreads --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libx264 --enable-libxvid --enable-libx265 --enable-libvidstab --disable-sdl2 --disable-openssl --enable-zlib --enable-mediacodec --enable-gpl
    LOG    libavutil      57. 13.100 / 57. 13.100
    LOG    libavcodec     59. 15.102 / 59. 15.102
    LOG    libavformat    59. 10.100 / 59. 10.100
    LOG    libavdevice    59.  1.100 / 59.  1.100
    LOG    libavfilter     8. 21.100 /  8. 21.100
    LOG    libswscale      6.  1.102 /  6.  1.102
    LOG    libswresample   4.  0.100 /  4.  0.100
    LOG  Guessed Channel Layout for Input Stream #0.1 : mono
    LOG  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file:///data/user/0/com.orbis.cybersight/files/95fdb965-5074-421f-b6b0-9e67332550ca/VID_20220625_211041.mp4':
    LOG    Metadata:
    LOG      major_brand     :
    LOG  mp42
    LOG  
    LOG      minor_version   :
    LOG  0
    LOG  
    LOG      compatible_brands:
    LOG  isommp42
    LOG  
    LOG      creation_time   :
    LOG  2022-06-25T19:11:17.000000Z
    LOG  
    LOG      location        :
    LOG  +37.4234-122.0839/
    LOG  
    LOG      location-eng    :
    LOG  +37.4234-122.0839/
    LOG  
    LOG      com.android.version:
    LOG  11
    LOG  
    LOG    Duration:
    LOG  00:00:33.68
    LOG  , start:
    LOG  0.000000
    LOG  , bitrate:
    LOG  8302 kb/s
    LOG  
    LOG    Stream #0:0
    LOG  [0x1]
    LOG  (eng)
    LOG  : Video: h264 (avc1 / 0x31637661), yuv420p(tv, gbr/reserved/reserved, progressive), 1280x720, 9007 kb/s
    LOG  , SAR 1:1 DAR 16:9
    LOG  ,
    LOG  22.69 fps,
    LOG  90k tbr,
    LOG  90k tbn
    LOG   (default)
    LOG  
    LOG      Metadata:
    LOG        creation_time   :
    LOG  2022-06-25T19:11:17.000000Z
    LOG  
    LOG        handler_name    :
    LOG  VideoHandle
    LOG  
    LOG        vendor_id       :
    LOG  [0][0][0][0]
    LOG  
    LOG      Side data:
    LOG  
    LOG  displaymatrix: rotation of -90.00 degrees
    LOG  
    LOG    Stream #0:1
    LOG  [0x2]
    LOG  (eng)
    LOG  : Audio: amr_nb (samr / 0x726D6173), 8000 Hz, mono, fltp, 12 kb/s
    LOG   (default)
    LOG  
    LOG      Metadata:
    LOG        creation_time   :
    LOG  2022-06-25T19:11:17.000000Z
    LOG  
    LOG        handler_name    :
    LOG  SoundHandle
    LOG  
    LOG        vendor_id       :
    LOG  [0][0][0][0]
    LOG  
    LOG  [h264 @ 0xebd4c280] The "sub_text_format" option is deprecated: Deprecated, does nothing
    LOG  [amrnb @ 0xebd4dc00] The "sub_text_format" option is deprecated: Deprecated, does nothing
    LOG  Stream mapping:
    LOG    Stream #0:0 -> #0:0
    LOG   (h264 (native) -> hevc (libx265))
    LOG  
    LOG    Stream #0:1 -> #0:1
    LOG   (amr_nb (amrnb) -> aac (native))
    LOG  
    LOG  Press [q] to stop, [?] for help
    LOG  [aac @ 0xebd4a5d0] Too many bits 8832.000000 > 6144 per frame requested, clamping to max
    LOG  Output #0, mp4, to '/storage/emulated/0/Android/data/com.orbis.cybersight/files/3dfb9ef6-6cb3-4adf-9777-8fb4c7762dc7.mp4':
    LOG    Metadata:
    LOG      major_brand     :
    LOG  mp42
    LOG  
    LOG      minor_version   :
    LOG  0
    LOG  
    LOG      compatible_brands:
    LOG  isommp42
    LOG  
    LOG      com.android.version:
    LOG  11
    LOG  
    LOG      location        :
    LOG  +37.4234-122.0839/
    LOG  
    LOG      location-eng    :
    LOG  +37.4234-122.0839/
    LOG  
    LOG      encoder         :
    LOG  Lavf59.10.100
    LOG  
    LOG    Stream #0:0
    LOG  (eng)
    LOG  : Video: hevc (hev1 / 0x31766568), yuv420p(tv, gbr/reserved/reserved, progressive), 720x1280 [SAR 1:1 DAR 9:16], q=2-31
    LOG  ,
    LOG  22.69 fps,
    LOG  2502k tbn
    LOG   (default)
    LOG  
    LOG      Metadata:
    LOG        creation_time   :
    LOG  2022-06-25T19:11:17.000000Z
    LOG  
    LOG        handler_name    :
    LOG  VideoHandle
    LOG  
    LOG        vendor_id       :
    LOG  [0][0][0][0]
    LOG  
    LOG        encoder         :
    LOG  Lavc59.15.102 libx265
    LOG  
    LOG      Side data:
    LOG  
    LOG  cpb:
    LOG  bitrate max/min/avg: 0/0/0 buffer size: 0
    LOG  vbv_delay: N/A
    LOG  
    LOG  
    LOG  displaymatrix: rotation of -0.00 degrees
    LOG  
    LOG    Stream #0:1
    LOG  (eng)
    LOG  : Audio: aac (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 48 kb/s
    LOG   (default)
    LOG  
    LOG      Metadata:
    LOG        creation_time   :
    LOG  2022-06-25T19:11:17.000000Z
    LOG  
    LOG        handler_name    :
    LOG  SoundHandle
    LOG  
    LOG        vendor_id       :
    LOG  [0][0][0][0]
    LOG  
    LOG        encoder         :
    LOG  Lavc59.15.102 aac