[Webkit-unassigned] [Bug 191257] [GStreamer][MSE] pixelated video when MSE is enabled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=191257

--- Comment #3 from Jim Mason <jmason at ibinx.com> ---
Hello Sra. Alicia, good afternoon, thank you for your prompt reply!

My comments follow in-line below.


(In reply to Alicia Boya García from comment #2)
> The matrix would be something like this, right?
> 
>              +------------------+------------+
>              | Regular playback |    MSE     |
> +------------+------------------+------------+
> | h264 (MP4) |        OK        |     OK     |
> | VP9 (WebM) |        OK        | Pixelation |
> +------------+------------------+------------+

Yes, this is correct.


> Can you check whether Opus audio (audio/webm) playback works correctly? You
> can check if you are using it by looking for "stats for nerds" in the YT
> context menu.

Yes, this seems working.  In the nerd display, I see (for example):

    Codecs  avc1.4d401f (136) / opus (251)

and the sound sounds OK.


> Does the pixelation occur since the first frame is played or does it happen
> later (e.g. in response to a seek). Does it clear at times (e.g. refresh
> frames) or is it constant?

Usually this occurs since the beginning of the video, although also again after a seek.  It will in some moments play clearly, then spontaneously pixelate.


> What CPU architecture are you using?

x86_64


> Do you have gstreamer1-vaapi installed? If so, is there any change after
> uninstalling it?

No, it is not installed.


> Also, try to play a VP9 webm video file with this command and see if you can
> reproduce the issue:
> 
> $ gst-play-1.0 pushfile:///home/user/yourvideo.webm

This command plays OK a local VP9 webm file.

Thank you again, enjoy what remains of the afternoon, and of course, please let me know if you need more information!

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20181106/48f963f0/attachment-0001.html>