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• FFMpeg How to extract individual audio channels from wav/.w64 and insert in .mxf with track tags

  20 décembre 2016, par Vince

  Hi my problem is I have 2 .w64 files (extended wav format) each file has 16 mono channels of audio. I want to be able to extract specific channels of audio from each of those .w64 files and insert those channels into an .mxf file as separate single channel mono audio streams and to be additionally able to set the Tag information on those audio streams. I have tried using -map and so on but it seems to take all the channels from the .w64 files and insert a single audio stream of 16 channels. I apologise in advance as I’m very new to ffmpeg and thanks in advance for any advice any of you can offer. This is all specific to command line usage on windows.
  All the best

  ffmpeg -i "D :\Media\AUDIO_0.W64" -i "D :\media\NO_AUDIO.mxf" -c copy -map 0:0:0 -map 0:0:1 -map 0:0:2 -acodec pcm_s24le -map 1:0 "D :\media\out.mxf"

  ffmpeg version N-67838-g4388e78 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Nov 19 2014 22:02:08 with gcc 4.9.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
  
  enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-lib
  
  modplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
  
  b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinge
  
  r --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --en
  
  able-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
  
   --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
  
  libx265 --enable-libxavs --enable-libxvid --enable-zlib
  
    libavutil      54. 14.100 / 54. 14.100
  
    libavcodec     56. 12.101 / 56. 12.101
  
    libavformat    56. 14.100 / 56. 14.100
  
    libavdevice    56.  3.100 / 56.  3.100
  
    libavfilter     5.  2.103 /  5.  2.103
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [w64 @ 0481c580] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, w64, from 'D:\Media\AUDIO_0.W64':
  
    Duration: 00:01:02.56, bitrate: 18432 kb/s
  
      Stream #0:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 16 channels
  
  , s32 (24 bit), 18432 kb/s
  
  [mxf @ 048890e0] index entry 1564 + TemporalOffset 1 = 1565, which is out of bou
  
  nds
  
  Input #1, mxf, from 'D:\media\NO_AUDIO.mxf':
  
    Metadata:
  
      uid             : adab4424-2f25-4dc7-92ff-29bd000c0000
  
      generation_uid  : adab4424-2f25-4dc7-92ff-29bd000c0001
  
      company_name    : FFmpeg
  
      product_name    : OP1a Muxer
  
      product_version : 57.56.100
  
      product_uid     : adab4424-2f25-4dc7-92ff-29bd000c0002
  
      modification_date: 0000-01-01 00:00:00
  
      timecode        : 00:00:00:00
  
    Duration: 00:01:02.60, start: 0.000000, bitrate: 2404 kb/s
  
      Stream #1:0: Video: mpeg2video (4:2:2), yuv422p(tv), 1920x1080 [SAR 1:1 DAR16:9], max. 50000 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
  
  File 'D:\media\out.mxf' already exists. Overwrite ? [y/N] y
  
  
  
  [mxf @ 04891c60] there must be exactly one video stream and it must be the first
  
   one
  
  Output #0, mxf, to 'D:\media\out.mxf':
  
    Metadata:
  
      encoder         : Lavf56.14.100
  
      Stream #0:0: Audio: pcm_s24le, 48000 Hz, 16 channels, s32 (24 bit), 18432 kb/s
  
      Metadata:
  
        encoder         : Lavc56.12.101 pcm_s24le
  
      Stream #0:1: Audio: pcm_s24le, 48000 Hz, 16 channels, s32 (24 bit), 18432 kb/s
  
      Metadata:
  
        encoder         : Lavc56.12.101 pcm_s24le
  
      Stream #0:2: Audio: pcm_s24le, 48000 Hz, 16 channels, s32 (24 bit), 18432 kb/s
  
      Metadata:
  
        encoder         : Lavc56.12.101 pcm_s24le
  
      Stream #0:3: Video: mpeg2video, yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, max. 50000 kb/s, 25 fps, 25 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (pcm_s24le (native) -> pcm_s24le (native))
  
    Stream #0:0 -> #0:1 (pcm_s24le (native) -> pcm_s24le (native))
  
    Stream #0:0 -> #0:2 (pcm_s24le (native) -> pcm_s24le (native))
  
    Stream #1:0 -> #0:3 (copy)
  
  
  
  Could not write header for output file #0 (incorrect codec parameters ?): Error
  
  number -1 occurred

• Revision de6ecc5ac3 : Selective masking of split modes. Allow selective masking of individual split m

  4 octobre 2013, par Paul Wilkins

  Changed Paths :
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_onyx_int.h

  
  
  Selective masking of split modes.

  Allow selective masking of individual split modes rather than
  just a single on / off flag.

  For speed 2 recovers the large speed loss seen for some derf
  clips in change Ie6bdfa0a370148dd60bd800961077f7e97e67dd4
  and a small quality gain.

  For speed 1 10 % speed increase observed locally on some derf clips
  for minimal quality change.

  Change-Id : If86191087b93cbc05351c26c60c7933e2149e485

• I have a m3u8 file where the individual files don't have any .ts format, Is there a way to cocnat them to a single mp4 file

  6 septembre 2020, par Suhail Hussain

  Here is a snippet of the m3u8 file

  


  #EXTM3U
#EXTINF:1,0
0
#EXTINF:1695,0c9c3bf590e32dcb8c4b83222056838b
0c9c3bf590e32dcb8c4b83222056838b
#EXTINF:1,1
1
#EXTINF:4,2
2
#EXTINF:3,3
3
#EXTINF:4,4
4
#EXTINF:3,5
5
#EXTINF:3,6
6
#EXTINF:4,7
7
#EXTINF:4,8
8
#EXTINF:3,9
9
#EXTINF:4,10
10


  


  This goes on for some 500 files. I am able to open the folder in vlc as a playlist but it is just a collection of 500 files that play one after the another. I checked online and found that ffmpeg can concatenate a m3u8 file to a mp4. That unfortunately did not work. After trying a few different syntaxes that I found on different forums which also did not work, I tried "ffplay" on the file name which once again gave the same error message as before - Invalid data found when processing input:=    0B f=0/0

  


  So this made me believe perhaps ffmpeg is unable to open the file while vlc is able to. Any way to combine these files to a single file is appreciated