[Libav-user] Direct rendering or avoiding copying locally a decoded AVFrame before rendering

[Julian Herrera (TVGenius)]

Hi Paul and wm4,

Thank you for your support. I realised I just needed to activate reference counting, so I set

AVCodecContext->refcounted_frames = 1;

before avcodec_open2() and then it worked! I do not have to copy the decoded frames locally any more so the process is more efficient now.

Thank you again!

Regards,
Julian Herrera

On 7 Oct 2013, at 16:55, wm4 <nfxjfg at googlemail.com> wrote:

> On Mon, 7 Oct 2013 15:22:19 +0000
> Paul B Mahol <onemda at gmail.com> wrote:
> 
>> On 10/7/13, Julian Herrera (TVGenius) <julian.herrera at tvgenius.net> wrote:
>>> I do not use reference counting indeed. I could not find an example on the
>>> Internet on how to use it.
>> 
>> https://github.com/mpv-player/mpv/blob/master/video/decode/vd_lavc.c
> 
> I think he wants to software-decode into a user-provided AVFrame, which
> this code does _not_ do. (It does only for hardware decoding - and for
> old libavcodec versions which didn't have native reference counting
> yet. I guess the hw decoding case could actually be applied to
> software decoding too, but it still doesn't make an ideal example.)
> 
> Anyway, he want to override get_frame2. I'm not sure if that strictly
> _requires_ reference counting, but maybe it's a good idea to use and
> enable it.
> 
>> doc/examples/filtering_audio.c
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