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• ffmpeg failing to add png mask to video : Requested planes not available

  23 août 2022, par Alexandr Sugak

  I am trying to add png mask to make webm video round (cut off its corners).

  


  The command I am using :

  


  video="./dist/tmp/19_2.webm"
mask="./dist/tmp/mask.png"
output="./dist/tmp/circle.webm"

ffmpeg -report -c:v libvpx-vp9 -i "${video}" -loop 1 -i "${mask}" -filter_complex " \
[1:v]alphaextract[alf];\
[0:v][alf]alphamerge" \
-c:a copy -c:v libvpx-vp9 "${output}"


  


  The command output :

  


  sh ./scripts/video_mask.sh 
ffmpeg started on 2022-08-23 at 17:27:48
Report written to "ffmpeg-20220823-172748.log"
Log level: 48
ffmpeg version 5.1-tessus Copyright (c) 2000-2022 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
[libvpx-vp9 @ 0x7fa072f05140] v1.11.0-30-g888bafc78
    Last message repeated 1 times
Input #0, matroska,webm, from './dist/tmp/19_2.webm':
  Metadata:
    ENCODER         : Lavf59.27.100
  Duration: 00:00:02.77, start: -0.007000, bitrate: 308 kb/s
  Stream #0:0(eng): Video: vp9 (Profile 0), yuva420p(tv, unknown/bt709/iec61966-2-1, progressive), 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn (default)
    Metadata:
      ALPHA_MODE      : 1
      ENCODER         : Lavc59.37.100 libvpx-vp9
      DURATION        : 00:00:02.744000000
  Stream #0:1(eng): Audio: opus, 48000 Hz, mono, fltp (default)
    Metadata:
      ENCODER         : Lavc59.37.100 libopus
      DURATION        : 00:00:02.767000000
Input #1, png_pipe, from './dist/tmp/mask.png':
  Duration: N/A, bitrate: N/A
  Stream #1:0: Video: png, pal8(pc), 640x480 [SAR 2835:2835 DAR 4:3], 25 fps, 25 tbr, 25 tbn
[libvpx-vp9 @ 0x7fa082f04880] v1.11.0-30-g888bafc78
Stream mapping:
  Stream #0:0 (libvpx-vp9) -> alphamerge
  Stream #1:0 (png) -> alphaextract:default
  alphamerge:default -> Stream #0:0 (libvpx-vp9)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libvpx-vp9 @ 0x7fa082f04880] v1.11.0-30-g888bafc78
[Parsed_alphaextract_0 @ 0x7fa083906e80] Requested planes not available.
[Parsed_alphaextract_0 @ 0x7fa083906e80] Failed to configure input pad on Parsed_alphaextract_0
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
Conversion failed!


  


  I've tried different combination of codecs and pixel formats but I still get the same error. My initial understanding was that ffmpeg fails to find the alpha channel in the input video. By setting -c:v libvpx-vp9 option it looks like ffmpeg correctly picks up yuva420p pixel format but it still gives the same error.

  


  What I am doing wrong ?

  


  Update : if I remove the alphaextract step as suggested in comments, the ffmpeg starts processing video indefinitely (the video I use to test is only 2 sec long). If I specify the number of frames manually, then the output is generated but the mask does not seem to have any effect :

  


  ffmpeg -c:v libvpx-vp9 -i "${video}" -loop 1 -i "${mask}" -filter_complex " \
[0:v][1:v]alphamerge" \
-c:a copy -b:v 2000k -vframes 60 "${output}"


  


   sh ./scripts/video_mask.sh 
ffmpeg version 5.1-tessus Copyright (c) 2000-2022 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
[libvpx-vp9 @ 0x7fdd6b005f00] v1.11.0-30-g888bafc78
    Last message repeated 1 times
Input #0, matroska,webm, from './dist/tmp/19_2.webm':
  Metadata:
    ENCODER         : Lavf59.27.100
  Duration: 00:00:02.77, start: -0.007000, bitrate: 308 kb/s
  Stream #0:0(eng): Video: vp9 (Profile 0), yuva420p(tv, unknown/bt709/iec61966-2-1, progressive), 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn (default)
    Metadata:
      ALPHA_MODE      : 1
      ENCODER         : Lavc59.37.100 libvpx-vp9
      DURATION        : 00:00:02.744000000
  Stream #0:1(eng): Audio: opus, 48000 Hz, mono, fltp (default)
    Metadata:
      ENCODER         : Lavc59.37.100 libopus
      DURATION        : 00:00:02.767000000
Input #1, png_pipe, from './dist/tmp/mask.png':
  Duration: N/A, bitrate: N/A
  Stream #1:0: Video: png, pal8(pc), 640x480 [SAR 2835:2835 DAR 4:3], 25 fps, 25 tbr, 25 tbn
File './dist/tmp/circle.webm' already exists. Overwrite? [y/N] y
[libvpx-vp9 @ 0x7fdd6b007ec0] v1.11.0-30-g888bafc78
Stream mapping:
  Stream #0:0 (libvpx-vp9) -> alphamerge
  Stream #1:0 (png) -> alphamerge
  alphamerge:default -> Stream #0:0 (libvpx-vp9)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libvpx-vp9 @ 0x7fdd6b007ec0] v1.11.0-30-g888bafc78
[libvpx-vp9 @ 0x7fdd6b024580] v1.11.0-30-g888bafc78
Output #0, webm, to './dist/tmp/circle.webm':
  Metadata:
    encoder         : Lavf59.27.100
  Stream #0:0: Video: vp9, yuva420p(tv, unknown/bt709/iec61966-2-1, progressive), 640x480 [SAR 1:1 DAR 4:3], q=2-31, 2000 kb/s, 1k fps, 1k tbn
    Metadata:
      encoder         : Lavc59.37.100 libvpx-vp9
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1(eng): Audio: opus, 48000 Hz, mono, fltp (default)
    Metadata:
      ENCODER         : Lavc59.37.100 libopus
      DURATION        : 00:00:02.767000000
frame=   60 fps= 16 q=2.0 Lsize=     285kB time=00:00:01.98 bitrate=1175.5kbits/s speed=0.526x    
video:270kB audio:11kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.529399%


  


• avcodec/libx265 : fill headers in extradata

  14 mars 2014, par Michael Niedermayer

  avcodec/libx265 : fill headers in extradata
  Fixes Ticket3457
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/libx265.c

• palettegen : Fill with last color, not black

  16 janvier 2019, par Tomas Härdin

  palettegen : Fill with last color, not black
  If we fill with black then the generated palette will have one color more
  
  than what the user requested. This also resulted in unwanted black specks in
  
  the output of paletteuse, especially when generating small palettes.
  

  • [DH] libavfilter/vf_palettegen.c
  • [DH] tests/ref/fate/filter-palettegen-2