[FFmpeg-devel] [PATCH][RFC] avcodec: disallow hwaccel with frame threads

Andreas Cadhalpun andreas.cadhalpun at googlemail.com
Tue Jan 19 23:54:48 CET 2016

On 19.01.2016 21:46, wm4 wrote:
> On Tue, 19 Jan 2016 21:31:19 +0100
> Hendrik Leppkes <h.leppkes at gmail.com> wrote:
>> On Tue, Jan 19, 2016 at 9:27 PM, Andreas Cadhalpun
>> <andreas.cadhalpun at googlemail.com> wrote:
>>> On 19.01.2016 21:22, Hendrik Leppkes wrote:  
>>>> On Tue, Jan 19, 2016 at 9:13 PM, Andreas Cadhalpun
>>>> <andreas.cadhalpun at googlemail.com> wrote:  
>>>> They don't lack time, they lack understanding of the flaws in the system.  
>>> How can you know that?  
>> Because I read the ticket, which says he doesn't want to do it, not
>> that he doesn't have time to do it, and because I know that particular
>> person and his attitude.
> It was discussed to death on #libav-devel too.

And the conclusion was to allow hwaccel with frame threads?

>> Its fundamentally broken, and making it a warning would re-introduce
>> known crashes. So no.
> +1

Can the crashes be reproduced with VLC?
If so, are they reported in the VLC bug tracker?

> There was this idea that this could be fixed by having some sort of
> wrapper decoder, which could take care of the fallback transparently
> and without getting into these nasty threading issues. But no idea how
> much work that would be.

Can't the framework just ignore the threading setting when using a hwaccel?

Best regards,

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