[Libav-user] multithreading video decoding support using ffmpeg

[Ierum Shanaya]

Thanks for the quick response!!

2 queries:

1) Do we have to also set the thread_type ( thread_type =
FF_THREAD_FRAME|FF_THREAD_SLICE) ? or Just by setting the thread count
(AVCodecContext::thread_count) before avcodec_open() works?

2) Do we have to do the thread synchorinization also? or ffmpeg library
handles that.. Because I had read in some links/discussions, that the
functions avcodec_open() and avcodec_close() are not thread safe?

Thanks,
Ierum

On Fri, Jan 3, 2014 at 12:35 PM, Евгений Гарифуллин <grisme at yandex.ru>wrote:

>
> 03.01.2014, 00:38, "Ierum Shanaya" <ierumshanaya85 at gmail.com>:
> > hi,
> >
> > I tried looking into the documentation of how to use multithreading to
> decode a h264 or mpg video static file, but could not find any detailed
> note.
> >
> > Could you please help me understand - how can we use multithreading to
> decode an incoming static video stream.
> >
> > If you can share me some sample programs , it would be of great help.
> >
> > Thanks,
> > Ierum
>
> threads for multithreading decoding (AVCodecContext::thread_count) must be
> set _before_ call to avcodec_open().
>
> --
> С уважением, Евгений Гарифуллин.
> e-mail: grisme at yandex.ru
> jabber: joffadark at jabber.ufanet.ru
> ICQ : 387906261
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