[FFmpeg-devel] decklink 24/32 bit question

Devin Heitmueller dheitmueller at ltnglobal.com
Tue Oct 17 22:44:44 EEST 2017

> The decklink sdk only defines two BMDAudioSampleType values: bmdAudioSampleType16bitInteger and bmdAudioSampleType32bitInteger. I don't think there's an easy way to support a 24 bit input here. Generally in this case I've used bmdAudioSampleType32bitInteger and then encode it at pcm_s24le.
> Dave Rice

For what it’s worth, I’ve got deinterleaving code in the works to handle capture of multiple pairs of audio (i.e. break 16 channels into 8 pairs and announce them as separate S16LE streams).  If we really thought 24-bit was desirable, that code could be adjusted accordingly (the hardware would still capture 32-bit, but the deinterleaver would put out S24LE).


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