[FFmpeg-user] Channel mapping misery

Bouke / VideoToolShed bouke at videotoolshed.com
Wed Mar 4 13:46:04 EET 2020



> On 04 Mar 2020, at 12:06, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> 
> Am Mi., 4. März 2020 um 12:02 Uhr schrieb Bouke / VideoToolShed
> <bouke at videotoolshed.com>:
> 
>> When I add one channel more to the previous command: (the wave file has 10 channels)
>> 
>> -threads 0 -i /Volumes/Data/test/C0092.MP4 -ss 1601.8095416666692 -i /Volumes/Data/test/068.WAV -map 0:0 -filter_complex [0:1][1:0][1:0][1:0][1:0][1:0][1:0]amerge=inputs=7,pan=7c|c0=c0|c1=c2|c2=c3|c3=c4|c4=c5|c5=c6|c6=c7[a] -map [a] -c:a pcm_s24le -timecode 01:42:38:10 -metadata:s:v:0 reel_name=C0092 -c:v copy /Volumes/Data/test/C0092.mov -y
>> 
>> This does show the pure channel mapping, but fails with:
> 
> Is it possible that you provided the complete, uncut console output
> for the working command line
> but not for the one that fails for you?

Ok, again from the console: 
(This obviously works)

bouke at Boukes-iMac ~ % /Applications/ffmpeg -threads 0 -i /Volumes/Data/test/C0092.MP4 -ss 1601.8095416666692 -i /Volumes/Data/test/068.WAV -map 0:0 -filter_complex "[0:1][1:0][1:0][1:0][1:0][1:0]amerge=inputs=6,pan=6c|c0=c0|c1=c2|c2=c3|c3=c4|c4=c5|c5=c6[a]" -map "[a]" -c:a pcm_s24le -timecode 01:42:38:10 -metadata:s:v:0 reel_name=C0092 -c:v copy /Volumes/Data/test/C0092.mov -y
ffmpeg version git-2020-02-03-1c15111 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.8)
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-appkit --enable-avfoundation --enable-coreimage --enable-audiotoolbox
  libavutil      56. 38.100 / 56. 38.100
  libavcodec     58. 67.100 / 58. 67.100
  libavformat    58. 37.100 / 58. 37.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 73.100 /  7. 73.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fddf6004e00] st: 0 edit list: 1 Missing key frame while searching for timestamp: 1000
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fddf6004e00] st: 0 edit list 1 Cannot find an index entry before timestamp: 1000.
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Volumes/Data/test/C0092.MP4':
  Metadata:
    major_brand     : XAVC
    minor_version   : 16785407
    compatible_brands: XAVCmp42iso2
    creation_time   : 2020-01-30T13:31:25.000000Z
  Duration: 00:00:02.40, start: 0.000000, bitrate: 97881 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 82959 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
    Metadata:
      creation_time   : 2020-01-30T13:31:25.000000Z
      handler_name    : Video Media Handler
      encoder         : AVC Coding
    Stream #0:1(und): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2020-01-30T13:31:25.000000Z
      handler_name    : Sound Media Handler
    Stream #0:2(und): Data: none (rtmd / 0x646D7472), 204 kb/s (default)
    Metadata:
      creation_time   : 2020-01-30T13:31:25.000000Z
      handler_name    : Timed Metadata Media Handler
      timecode        : 01:42:38:10
Input #1, wav, from '/Volumes/Data/test/068.WAV':
  Metadata:
    comment         : sSPEED=025.000-ND 
                    : sTAKE=068 
                    : sUBITS=$00000000 
                    : sSWVER=5.01.8149 
                    : sSCENE=MixPre 
                    : sFILENAME=MixPre-068.WAV 
                    : sTAPE=200130 
                    : sCIRCLED=FALSE 
                    : sTRK1=MixL 
                    : sTRK2=MixR 
                    : sTRK3=Track 1 
                    : sTRK4=Track 2 
                    : sTRK5=Track 3 
                    : sTRK6=Track 4 
                    : sTRK7=Track 5 
                    : sTRK8=Track 6 
                    : sTRK9
    encoded_by      : SoundDev: MixPre-10 II TJ0019225
    originator_reference: USSDVTJ001922501520013072A000201
    date            : 2020-01-30
    creation_time   : 07:02:20
    time_reference  : 2468718515
    coding_history  : A=PCM,F=48000,W=24,M=multi,R=48000,T=10 Ch;Ambisonics=off 
                    : 
  Duration: 00:49:41.90, bitrate: 11520 kb/s
    Stream #1:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 10 channels, s32 (24 bit), 11520 kb/s
Stream mapping:
  Stream #0:1 (pcm_s16be) -> amerge:in0
  Stream #1:0 (pcm_s24le) -> amerge:in1
  Stream #1:0 (pcm_s24le) -> amerge:in2
  Stream #1:0 (pcm_s24le) -> amerge:in3
  Stream #1:0 (pcm_s24le) -> amerge:in4
  Stream #1:0 (pcm_s24le) -> amerge:in5
  Stream #0:0 -> #0:0 (copy)
  pan -> Stream #0:1 (pcm_s24le)
Press [q] to stop, [?] for help
[Parsed_amerge_0 @ 0x7fddf5c28e80] No channel layout for input 1
[Parsed_amerge_0 @ 0x7fddf5c28e80] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
[Parsed_pan_1 @ 0x7fddf5c29380] Pure channel mapping detected: 0 2 3 4 5 6
Output #0, mov, to '/Volumes/Data/test/C0092.mov':
  Metadata:
    major_brand     : XAVC
    minor_version   : 16785407
    compatible_brands: XAVCmp42iso2
    timecode        : 01:42:38:10
    encoder         : Lavf58.37.100
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 82959 kb/s, 0.04 fps, 25 tbr, 25k tbn, 25k tbc (default)
    Metadata:
      creation_time   : 2020-01-30T13:31:25.000000Z
      handler_name    : Video Media Handler
      encoder         : AVC Coding
      reel_name       : C0092
    Stream #0:1: Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 5.1, s32, 6912 kb/s (default)
    Metadata:
      encoder         : Lavc58.67.100 pcm_s24le
frame=   60 fps=0.0 q=-1.0 Lsize=   26333kB time=00:00:02.40 bitrate=89884.2kbits/s speed=31.5x    
video:24305kB audio:2025kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.014150%


Thanks,
Bouke


> 
> Carl Eugen
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