[FFmpeg-user] help with live capture and audio sync issues

Carl Eugen Hoyos cehoyos at ag.or.at
Wed Dec 23 01:47:09 CET 2015

Ricardo Kleemann <ricardo <at> americasnet.com> writes:

> Input #0, avfoundation, from 'none:C-Media USB Audio Device':
>   Duration: N/A, start: 1057.070635, bitrate: 1411 kb/s

> Input #1, decklink, from 'UltraStudio Mini Recorder <at> 12:none':
>   Duration: N/A, start: 0.000000, bitrate: 1536 kb/s

This cannot be synchronized.
I suspect the decklink input device has to learn 
how to produce more useful timestamps.
(Assuming 1057 are seconds since power-on.)

Carl Eugen

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