[FFmpeg-devel] [PATCH 1/3] lavc/speedhqdec: Add AV_CODEC_CAP_FRAME_THREADS

[Tomas Härdin]

ons 2024-05-08 klockan 09:46 -0300 skrev James Almer:
> On 5/8/2024 9:42 AM, Tomas Härdin wrote:
> > Hi
> > 
> > On a 36-core machine (Intel(R) Xeon(R) Platinum 8124M CPU @
> > 3.00GHz)
> > with a 7 minute 125 Mbit/s 1080p sample and -thread_type frame -
> > threads
> > 36 this brings CPU utilization from 117% to 3174%, 58x realtime
> > 
> > Without -threads 36 the utilization is only 1601% due to it being
> > 16 by
> > default..
> 
> Does this default make sense anymore? I think it was added for h264,
> but 
> maybe it should be decoder dependent.

It is only relevant for slice threading in h264, right? It certainly
doesn't make sense for any intra-only codec in frame threading mode

/Tomas