[FFmpeg-devel] [PATCH v2] avcodec/cuviddec: update parser ulMaxNumDecodeSurfaces

[Random Joe]

Only update ulMaxNumDecodeSurfaces if necessary.
As for the stutter , I can't tell for sure , maybe it's a race
condition somewhere in the driver.
402d98c decoupled cuvid parser and decoder number of decode buffers ,
with parser buffers
set to be always CUVID_DEFAULT_NUM_SURFACES (5).
In NVDEC Programming Guide they recommend setting an equal number of
buffers for parser and decoder.
Here are my test outputs and logs , edited memory pointers for better
files comparison :
https://drive.google.com/drive/folders/1f0ehcNxQV-0sMvm2g66J97kHxAGeRKUT


On Sat, Aug 12, 2023 at 12:15 AM Timo Rothenpieler
<timo at rothenpieler.org> wrote:
>
> On 11.08.2023 19:50, Random Joe wrote:
> Any reason to not just always return nb_surfaces here?
> I don't really understand why this would cause stuttering though. It
> might waste a bit of memory to always set the maximum number to the
> allowed maximum, but why would it hurt performance?
>