[Libav-user] prores encoding

David Ibbitson davey at nextvr.com
Tue May 22 02:33:59 EEST 2018

> On May 21, 2018, at 4:10 PM, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> 2018-05-21 22:24 GMT+02:00, David Ibbitson <david.ibbitson at gmail.com <mailto:david.ibbitson at gmail.com>>:
>> Hi Folks,
>> I'm having trouble with both prores codecs -- prores, and proes_ks.
>> I've tried both and even though both support FF_THREAD_FRAME
>> I'm getting significant frame tearing given the more threads I use.
>> I'm setting:
>> vctx_->profile = 3;
>> vctx_->thread_type = FF_THREAD_FRAME;
>> vctx_->thread_count = 16;
>> to achieve reasonable performance, but the video tearing
>> on  output is not good. Allot of frame jumping in addition.
> This sounds as if you overwrite the frame data before it is
> consumed by libavcodec.

I assume then it necessary to maintain a pool of AVFrames of size >= to the number of frame threads I wish to encode with?



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