[FFmpeg-user] 7.1 wave filter complex amerge issue

[Paul B Mahol]

On Sun, Jan 24, 2021 at 11:26 AM Bouke <bouke at editb.nl> wrote:

> Trying to remap channels in a 7.1 Wave file, but that gives me a strange
> error.
>
> (I’ve reduced my lines to the most simple to reproduce.)
>
> When I use the same input file, but do a 5.1 remap it works as expected:
> /Applications/ffmpeg -i /Volumes/Data/LC_testfiles/8chan.wav
> -filter_complex
> "[0:0][0:0][0:0][0:0][0:0][0:0]amerge=inputs=6,pan=5.1|c0=c0|c1=c1|c2=c2|c3=c3|c4=c4|c5=c5|[mix]"
> -map "[mix]" -f null -
>
> BUT, with 7.1 it fails
> /Applications/ffmpeg -i /Volumes/Data/LC_testfiles/8chan.wav
> -filter_complex
> "[0:0][0:0][0:0][0:0][0:0][0:0][0:0][0:0]amerge=inputs=8,pan=7.1|c0=c0|c1=c1|c2=c2|c3=c3|c4=c4|c5=c5|c6=c6|c7=c7|[mix]"
> -map "[mix]" -f null -
>
> Is it me, or is this a bug?
>
> Bouke
>
> Output:
> ffmpeg version 4.3.1-tessus  https://evermeet.cx/ffmpeg/  Copyright (c)
> 2000-2020 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-libwavpack --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      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
>   libswscale      5.  7.100 /  5.  7.100
>   libswresample   3.  7.100 /  3.  7.100
>   libpostproc    55.  7.100 / 55.  7.100
> Input #0, wav, from '/Volumes/Data/LC_testfiles/8chan.wav':
>   Metadata:
>     encoded_by      : Pro Tools
>     originator_reference: aaizN!wd5kQk
>     date            : 2021-01-22
>     creation_time   : 16:15:18
>     time_reference  : 0
>     umid            :
> 0x060A2B340101010501010F1013000000A2B90D6FE7648000E87D71677E54073C
>   Duration: 00:07:51.07, bitrate: 9264 kb/s
>     Stream #0:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 7.1,
> s32 (24 bit), 9216 kb/s
> Stream mapping:
>   Stream #0:0 (pcm_s24le) -> amerge:in0
>   Stream #0:0 (pcm_s24le) -> amerge:in1
>   Stream #0:0 (pcm_s24le) -> amerge:in2
>   Stream #0:0 (pcm_s24le) -> amerge:in3
>   Stream #0:0 (pcm_s24le) -> amerge:in4
>   Stream #0:0 (pcm_s24le) -> amerge:in5
>   Stream #0:0 (pcm_s24le) -> amerge:in6
>   Stream #0:0 (pcm_s24le) -> amerge:in7
>   pan -> Stream #0:0 (pcm_s16le)
> Press [q] to stop, [?] for help
> [Parsed_amerge_0 @ 0x7f8654504240] No channel layout for input 1
> [Parsed_amerge_0 @ 0x7f8654504240] Input channel layouts overlap: output
> layout will be determined by the number of distinct input channels
> [auto_resampler_0 @ 0x7f8654508300] [SWR @ 0x7f8655811000] Value
> 2147483647.000000 for parameter 'ich' out of range [0 - 64]
> [auto_resampler_0 @ 0x7f8654508300] [SWR @ 0x7f8655811000] Value
> 2147483647.000000 for parameter 'och' out of range [0 - 64]
> [auto_resampler_0 @ 0x7f8654508300] [SWR @ 0x7f8655811000] Input channel
> count and layout are unset
> [auto_resampler_0 @ 0x7f8654508300] Failed to configure output pad on
> auto_resampler_0
> Error reinitializing filters!
>

I thought you gonna amerge mono channels into 7.1, but you use already 7.1
input.


> Failed to inject frame into filter network: Invalid argument
> Error while processing the decoded data for stream #0:0
> Conversion failed!
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