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• Concatenating video files with ffmpeg, no sound in output file [on hold]

  1er septembre 2013, par Junaid

  I am concatenating different AVI video files. The input files has been specified in input.txt in the order required. First video file does not have sound track, but subsequent files have.

  After completion the resulting the operation, the output does not have audio !

  If I remove first video files from input then resulting video gets sound. So it means the output format follows the first item in input list. How can I solve this problem.

  Please suggest the options in ffmpeg ; not in any other tools like mencoder.

   ffmpeg -f concat -i inputs.txt -c copy test.avi
  
  ffmpeg version 1.1.git Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Jun 27 2013 09:22:45 with gcc 4.7 (Ubuntu/Linaro 4.7.3-1ubuntu1)
  
    configuration: --prefix=/home/junaid/ffmpeg_build --extra-cflags=-I/home/junaid/ffmpeg_build/include --extra-ldflags=-L/home/junaid/ffmpeg_build/lib --bindir=/home/junaid/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab
  
    libavutil      52. 37.101 / 52. 37.101
  
    libavcodec     55. 17.100 / 55. 17.100
  
    libavformat    55.  9.100 / 55.  9.100
  
    libavdevice    55.  2.100 / 55.  2.100
  
    libavfilter     3. 77.101 /  3. 77.101
  
    libswscale      2.  3.100 /  2.  3.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  3.100 / 52.  3.100
  
  [concat @ 0x335a880] Invalid stream index 1
  
  [concat @ 0x335a880] max_analyze_duration 5000000 reached at 5000000 microseconds
  
  Input #0, concat, from 'inputs.txt':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (xvid / 0x64697678), yuv420p, 720x480 [SAR 32:27 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Output #0, avi, to 'test.avi':
  
    Metadata:
  
      ISFT            : Lavf55.9.100
  
      Stream #0:0: Video: mpeg4 (xvid / 0x64697678), yuv420p, 720x480 [SAR 32:27 DAR 16:9], q=2-31, 25 fps, 25 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  [concat @ 0x335a880] Invalid stream index 1
  
      Last message repeated 6368 times
  
  frame= 3793 fps=0.0 q=-1.0 size=   11108kB time=00:02:37.96 bitrate= 576.1kbits/Invalid stream index 1
  
  [concat @ 0x335a880] Invalid stream index 1
  
      Last message repeated 7173 times
  
  frame= 7921 fps=7801 q=-1.0 size=   22928kB time=00:05:30.16 bitrate= 568.9kbitsInvalid stream index 1
  
  [concat @ 0x335a880] Invalid stream index 1
  
      Last message repeated 6614 times
  
  frame=11729 fps=7688 q=-1.0 size=   27057kB time=00:08:08.96 bitrate= 453.3kbitsInvalid stream index 1
  
  [concat @ 0x335a880] Invalid stream index 1
  
      Last message repeated 6247 times
  
  frame=15324 fps=7565 q=-1.0 size=   44956kB time=00:10:38.92 bitrate= 576.4kbitsInvalid stream index 1
  
  [concat @ 0x335a880] Invalid stream index 1
  
      Last message repeated 6553 times
  
  frame=19096 fps=7516 q=-1.0 size=   64014kB time=00:13:16.24 bitrate= 658.6kbitsInvalid stream index 1
  
  [concat @ 0x335a880] Invalid stream index 1
  
      Last message repeated 6753 times
  
  frame=22983 fps=7558 q=-1.0 size=   79848kB time=00:15:58.36 bitrate= 682.5kbitsInvalid stream index 1
  
  [concat @ 0x335a880] Invalid stream index 1
  
      Last message repeated 7011 times
  
  frame=27019 fps=7610 q=-1.0 size=   94130kB time=00:18:46.68 bitrate= 684.4kbitsInvalid stream index 1
  
  [concat @ 0x335a880] Invalid stream index 1
  
      Last message repeated 1302 times
  
  frame=27772 fps=7658 q=-1.0 Lsize=   96618kB time=00:19:18.08 bitrate= 683.5kbits/s    
  
  video:95921kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.726908%

• Can't upload .mkv video file to camtasia 2018

  11 juin 2019, par FunTech StudentsVideos

  Can’t Import .mkv video file to camtasia 2018 :

  I have made an intro for my Youtube Channel on Penzoid and then uploaded it to my laptop in .mkv file format, now it can’t be import to camtasia 2018 for rendering with the recorded video in camtasia...

  I used cloudconvert to convert my intro to .mp4 format but it give me the following error :

  ERROR Could not find tag for codec vp8 in stream #0, codec not currently supported in container
  . Last message repeated 1 times
  Last message repeated 1 times

  I also used .bat file with the following code but it didn’t help me :

  @echo off
  
  if not exist "fixed" mkdir fixed
  
  for %%f in ("*.mp4") do "C:\Users\Nadeem Ullah\Downloads\Compressed\ffmpeg-win64-static\bin\ffmpeg.exe" -i "%%f" -c:a copy -c:v copy "fixed\%%~nf.mp4"

• vulkan : add support for encode and decode queues and refactor queue code

  7 novembre 2021, par Lynne

  vulkan : add support for encode and decode queues and refactor queue code
  This simplifies and makes queue family picking simpler and more robust.
  
  The requirements on the device context are relaxed. They made no sense
  
  in the first place.
  The video encode/decode extension is still in beta, at least on paper,
  
  but I really doubt they'd change needing a separate queue family.
  

  • [DH] libavfilter/vf_avgblur_vulkan.c
  • [DH] libavfilter/vf_chromaber_vulkan.c
  • [DH] libavfilter/vf_overlay_vulkan.c
  • [DH] libavfilter/vf_scale_vulkan.c
  • [DH] libavfilter/vulkan.h
  • [DH] libavutil/hwcontext_vulkan.c
  • [DH] libavutil/hwcontext_vulkan.h