[FFmpeg-user] ffmpeg audio distortion using blackmagic

Flumotion Support support at flumotion.com
Tue Jul 24 11:08:32 EEST 2018

thanks everyone for the help received,
How could I detect this audio distortion using ffmpeg?  or in what way
could I detect it?

Thanks in advance
Best regards

On Tue, Jul 24, 2018 at 12:58 AM, Carl Zwanzig <cpz at tuunq.com> wrote:

> On 7/23/2018 3:47 PM, Marton Balint wrote:
>> On Mon, 23 Jul 2018, Flumotion Support wrote:
>>> If I understood you correctly to avoid corruption, I need to add the
>>> option
>>> -async 1 -vsync 1 in my ffmpeg pipeline is this correct?,
>> No, for "frame sync" I meant a real hardware frame synchronizer device.
> I'm not sure why a frame sync would help what's otherwise an un-timed SDI
> signal unless there are a ton of uncorrected errors (and you'll still have
> artifacts). Also what would you use as a clock for the frame sync? Without
> one it's not really useful.
> To the OP- Have you tried capturing using the BMD desktop app? Does it
> record clean audio? Can you record with ffmpeg to disk w/o problems?
> Later,
> z!
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