[Webkit-unassigned] [Bug 252581] [GStreamer][VP9] HFR Youtube playback stutters with vavp9dec

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=252581

--- Comment #6 from Philippe Normand <philn at igalia.com> ---
(In reply to Víctor M. Jáquez L. from comment #4)
> IIUC you're reporting two different problems
> 

Correct.

> 1. A lot of drops when using gl sink. Perhaps something (decoding, upload,
> color conversion, etc.) is slugging the rendering.
> 2. the dma's drm format is not negotiated so the image is not well rendered
> using the dmabuf sink. For this issue we need to finish
> https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3524
> 
> For both cases, perhaps adding a vapostproc after the decoder as video
> filter might help.

It might help in GL sink case but it definitely does not with the dmabuf sink. We hardcode modifiers to 0 anyway when handling the buffers from the sink.

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