On 29.09.2021 19:31, Dennis Mungai wrote:
On Wed, 29 Sept 2021 at 20:22, Timo Rothenpieler <t...@rothenpieler.org> wrote:On 29.09.2021 19:17, Dennis Mungai wrote:A potential downside to this would be on QSV's side, which needs at least 2 threads to prevent dead-locking, seehttps://github.com/Intel-Media-SDK/MediaSDK/blob/master/_studio/mfx_lib/scheduler/linux/src/mfx_scheduler_core_ischeduler.cpp#L90-L93 Is that even controlled by the avcodec threads parameter? I can't find any occurrence of "numberOfThreads" anywhere in the entire codebase.See this patchwork: https://patchwork.ffmpeg.org/project/ffmpeg/patch/20210408070929.860244-1-haihao.xi...@intel.com/ Submitted by Haihao Xiang, CC'ed herein.
That almost makes me think we'd need a per-hwaccel default of the thread count.
Preferably not hacked as hard coded list into ffmpeg.c
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