[FFmpeg-user] ffmpeg audio distortion using blackmagic

[Flumotion Support]

Hello,
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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