[FFmpeg-user] Amerge trouble
Bouke / VideoToolShed
bouke at videotoolshed.com
Wed Nov 22 10:48:07 EET 2017
> On 22 Nov 2017, at 06:32, Gyan Doshi <gyandoshi at gmail.com> wrote:
> On 11/19/2017 6:09 PM, Bouke / VideoToolShed wrote:
>>> ffmpeg -i HD422.mxf -i 8ch.wav -c:v copy -c:a pcm_s24le -filter_complex \
>>> [a1][0:a:1][a0][0:a:0][0:a:2]amerge=inputs=5[a]" \
>>> -map 0:v -map "[a]" -timecode 01:00:00:00 testmerge01.mxf \
>>> -map "[a2]" -map "[a3]" -map "[a4]" -map "[a5]" -map "[a6]" -map "[a7]" -f
>>> null -
>> And after that promote it to 24 bits again.
>> Is there a way to force the channel split to work in 24 bits?
>> (No idea how to squeeze pcm_s24le into the filter_complex part…)
> The default audio codec for the null muxer is pcm_s16le, and your audio codec option is only set for the first output, so add '-c:a pcm_s24le' anywhere after the output mxf filename, and before the pipe character.
AH! Stupid me, now I see only the unused channels (that go down the drain) are 16 bits :-)
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