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• FFmpeg with Quicksync : unable to hardware decode file

  9 juin 2023, par MuchToKnow

  I'm trying to convert a h264 video to h265 using hardware decoding/decoding of the iGPU (Quicksync). Decoding does not work throwing the error "Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scaler_0'"

  


  I'm using the most basic example from https://trac.ffmpeg.org/wiki/Hardware/QuickSync. Hardware encoding works (in this example it's software decoded)

  


  ffmpeg -v verbose -hwaccel qsv -i VID_20230526_174925.mp4 -c:v hevc_qsv -b:v 5M output.mp4


  


  but hardware decoding does not work :

  


  ffmpeg -v verbose -hwaccel qsv -c:v h264_qsv -i VID_20230526_174925.mp4 -f null -


  


  I'm out of ideas.

  


  Full ffmpeg output :

  


  ffmpeg version 4.3.6-0+deb11u1 Copyright (c) 2000-2023 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
[h264 @ 0x55d0c3b3bfc0] Reinit context to 1920x1088, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VID_20230526_174925.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2023-05-26T15:49:25.000000Z
    com.android.version: 10
  Duration: 00:01:22.88, start: 0.000000, bitrate: 14784 kb/s
    Stream #0:0(eng): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(tv, bt709, left), 1920x1080 (1920x1088), 14517 kb/s, SAR 1:1 DAR 16:9, 29.69 fps, 29.75 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      rotate          : 90
      creation_time   : 2023-05-26T15:49:25.000000Z
      handler_name    : VideoHandle
    Side data:
      displaymatrix: rotation of -90.00 degrees
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 191 kb/s (default)
    Metadata:
      creation_time   : 2023-05-26T15:49:25.000000Z
      handler_name    : SoundHandle
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (h264_qsv) -> wrapped_avframe (native))
  Stream #0:1 -> #0:1 (aac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[graph_1_in_0_1 @ 0x55d0c3ba67c0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
[format_out_0_1 @ 0x55d0c3b5f100] auto-inserting filter 'auto_resampler_0' between the filter 'Parsed_anull_0' and the filter 'format_out_0_1'
[auto_resampler_0 @ 0x55d0c3b81900] ch:2 chl:stereo fmt:fltp r:48000Hz -> ch:2 chl:stereo fmt:s16 r:48000Hz
[AVHWDeviceContext @ 0x55d0c3bb4640] Trying to use DRM render node for device 0, with matching kernel driver (i915).
[AVHWDeviceContext @ 0x55d0c3bb4640] libva: VA-API version 1.10.0
[AVHWDeviceContext @ 0x55d0c3bb4640] libva: User requested driver 'iHD'
[AVHWDeviceContext @ 0x55d0c3bb4640] libva: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
[AVHWDeviceContext @ 0x55d0c3bb4640] libva: Found init function __vaDriverInit_1_10
[AVHWDeviceContext @ 0x55d0c3bb4640] libva: va_openDriver() returns 0
[AVHWDeviceContext @ 0x55d0c3bb4640] Initialised VAAPI connection: version 1.10
[AVHWDeviceContext @ 0x55d0c3bb4640] VAAPI driver: Intel iHD driver for Intel(R) Gen Graphics - 21.1.1 ().
[AVHWDeviceContext @ 0x55d0c3bb4640] Driver not found in known nonstandard list, using standard behaviour.
[AVHWDeviceContext @ 0x55d0c3bbc080] Initialize MFX session: API version is 1.34, implementation version is 1.34
[AVHWDeviceContext @ 0x55d0c3d4d200] VAAPI driver: Intel iHD driver for Intel(R) Gen Graphics - 21.1.1 ().
[AVHWDeviceContext @ 0x55d0c3d4d200] Driver not found in known nonstandard list, using standard behaviour.
[h264_qsv @ 0x55d0c3b59940] Decoder: output is video memory surface
[AVHWDeviceContext @ 0x55d0c3d82640] VAAPI driver: Intel iHD driver for Intel(R) Gen Graphics - 21.1.1 ().
[AVHWDeviceContext @ 0x55d0c3d82640] Driver not found in known nonstandard list, using standard behaviour.
[h264_qsv @ 0x55d0c3b59940] Decoder: output is video memory surface
[graph 0 input from stream 0:0 @ 0x55d0c3da30c0] w:1920 h:1080 pixfmt:qsv tb:1/90000 fr:119/4 sar:1/1
[auto_scaler_0 @ 0x55d0c3d6f2c0] w:iw h:ih flags:'bicubic' interl:0
[transpose @ 0x55d0c3de3600] auto-inserting filter 'auto_scaler_0' between the filter 'graph 0 input from stream 0:0' and the filter 'transpose'
Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scaler_0'
Error reinitializing filters!
Failed to inject frame into filter network: Function not implemented
Error while processing the decoded data for stream #0:0
[AVIOContext @ 0x55d0c3b43140] Statistics: 670703 bytes read, 3 seeks


  


  Tried to hardware decode a h264 file and it results in the error

  


  Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scaler_0'


  


• Use FFMPEG to convert MP4/AAC to MP3 without audio time getting shortened

  10 janvier 2023, par Esenkay07

  I've been struggling with extracting the audio from a couple of mp4 files I have. I have tried using all of the different answers posted previously on Stack Overflow, but each of them results in an mp3 file that's shorter than the original mp4.

  


  If anyone has any insights as to what I'm doing wrong, that'd be greatly appreciated, or at the very least why it's not this simple to convert from mp4 to mp3.

  


  I have tried copying the codec and using variable bitrate. The input video is 1:24:56, but the output audio is 1:24:46.

  


  Command : ffmpeg -i sample.mp4 -c:v copy -q:a 0 sample.mp3

  


  Output :

  


  $ffmpeg -i sample.mp4 -c:v copy -q:a 0 sample.mp3

ffmpeg version 2023-01-09-git-13d04e30d7-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      57. 43.100 / 57. 43.100
  libavcodec     59. 56.100 / 59. 56.100
  libavformat    59. 34.102 / 59. 34.102
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 53.100 /  8. 53.100
  libswscale      6.  8.112 /  6.  8.112
  libswresample   4.  9.100 /  4.  9.100
  libpostproc    56.  7.100 / 56.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'sample.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.83.100
  Duration: 01:24:56.57, start: 0.000000, bitrate: 612 kb/s
  Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 480 kb/s, 29.94 fps, 30 tbr, 90k tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:1 -> #0:0 (aac (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
Output #0, mp3, to 'sample.mp3':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    TSSE            : Lavf59.34.102
  Stream #0:0(und): Audio: mp3, 44100 Hz, stereo, fltp (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc59.56.100 libmp3lame
size=   88336kB time=01:24:56.54 bitrate= 142.0kbits/s speed= 172x
video:0kB audio:88336kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000394%


  


• FFmpeg conform DASH to YouTube Live Stream requirements

  4 septembre 2023, par Aniol Pagès

  I'm trying to stream to YouTube using FFmpeg and DASH. I've generated the stream key and I'm successfully sending the generated files to YouTube. However, YouTube refuses the MPD manifest because it has two AdaptationSet (one for video and one for audio), and the documentation specifies that I should use only one for both video and audio

  


  I've tried to use the -adaptation_sets flag unsuccessfully, and also the -map flag.

  


  Here is one of the commands I've tried :
ffmpeg -re -i "/Users/user/Desktop/file.mp4" \        -map 0:v -map 0:a \        -use_template 1 -use_timeline 1 -window_size 5 -min_seg_duration 5000000 \        -f dash dash.mpd

  


  And with the -adaptation_sets flag :
ffmpeg -re -i "/Users/aniolpages/Desktop/2023-09-03 Taller colar filtrar assubtilar.mp4" -map 0 -map 0 -c:a aac -c:v libx264 \ -use_timeline 1 -use_template 1 \ -window_size 5 -adaptation_sets "id=0,streams=v id=1,streams=a" \ -f dash dash.mpd

  


  Has someone been successful to conform the manifest to YouTube requirements ?

  


  Thank you very much !