Performance of software video decoding

[Marek Marczykowski-Górecki]

Hi,

I just did some testing on a laptop with 4K screen and i9-13900H CPU.
The test case is Big Buck Bunny videos[1] in various formats, played
with "parole" (default video player in the default xfce template) which
uses gstreamer.

Playing 4K version of the video fails completely, I get maybe 0.5fps or
even worse. This applies to both 30fps and 60fps files.

Playing FHD version in its original size works just fine both at 30fps
and 60fps.

Playing FHD version scaled up to the full screen works just fine at
30fps, but starts dropping frames at 60fps quite quickly (especially
during more dynamic scenes).

Just FYI, there is no any action needed.

[1] http://bbb3d.renderfarming.net/download.html

--
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab

[Demi Marie Obenour]

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Thank you for testing this and providing a test case.
- --
Sincerely,
Demi Marie Obenour (she/her/hers)
Invisible Things Lab
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[Demi Marie Obenour]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

On Sun, Nov 03, 2024 at 05:00:03PM +0100, Marek Marczykowski-Górecki wrote:

I got much better results with Google Chrome playing a 4K video from
YouTube. This led me to check on #gstreamer:gstreamer.org, and the
developers there found that the problem is with the OpenH264 decoder
that Fedora ships. Other H.264 implementations handle it just fine.

- --
Sincerely,
Demi Marie Obenour (she/her/hers)
Invisible Things Lab
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[Marek Marczykowski-Górecki]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

On Wed, Nov 06, 2024 at 11:59:30AM -0500, Demi Marie Obenour wrote:
> On Sun, Nov 03, 2024 at 05:00:03PM +0100, Marek Marczykowski-Górecki wrote:
> > Hi,
> >
> > I just did some testing on a laptop with 4K screen and i9-13900H CPU.
> > The test case is Big Buck Bunny videos[1] in various formats, played
> > with "parole" (default video player in the default xfce template) which
> > uses gstreamer.
> >
> > Playing 4K version of the video fails completely, I get maybe 0.5fps or
> > even worse. This applies to both 30fps and 60fps files.
> >
> > Playing FHD version in its original size works just fine both at 30fps
> > and 60fps.
> >
> > Playing FHD version scaled up to the full screen works just fine at
> > 30fps, but starts dropping frames at 60fps quite quickly (especially
> > during more dynamic scenes).
> >
> > Just FYI, there is no any action needed.
> >
> > [1] http://bbb3d.renderfarming.net/download.html
>
> I got much better results with Google Chrome playing a 4K video from
> YouTube. This led me to check on #gstreamer:gstreamer.org, and the
> developers there found that the problem is with the OpenH264 decoder
> that Fedora ships. Other H.264 implementations handle it just fine.

Interesting, does it mean it works just fine on Debian for example?

- --
Best Regards,
Marek Marczykowski-Górecki

Invisible Things Lab
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[Demi Marie Obenour]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

On Wed, Nov 06, 2024 at 07:18:04PM +0100, Marek Marczykowski-Górecki wrote:
> On Wed, Nov 06, 2024 at 11:59:30AM -0500, Demi Marie Obenour wrote:
> > On Sun, Nov 03, 2024 at 05:00:03PM +0100, Marek Marczykowski-Górecki wrote:
> > > Hi,
> > >
> > > I just did some testing on a laptop with 4K screen and i9-13900H CPU.
> > > The test case is Big Buck Bunny videos[1] in various formats, played
> > > with "parole" (default video player in the default xfce template) which
> > > uses gstreamer.
> > >
> > > Playing 4K version of the video fails completely, I get maybe 0.5fps or
> > > even worse. This applies to both 30fps and 60fps files.
> > >
> > > Playing FHD version in its original size works just fine both at 30fps
> > > and 60fps.
> > >
> > > Playing FHD version scaled up to the full screen works just fine at
> > > 30fps, but starts dropping frames at 60fps quite quickly (especially
> > > during more dynamic scenes).
> > >
> > > Just FYI, there is no any action needed.
> > >
> > > [1] http://bbb3d.renderfarming.net/download.html
> >
> > I got much better results with Google Chrome playing a 4K video from
> > YouTube. This led me to check on #gstreamer:gstreamer.org, and the
> > developers there found that the problem is with the OpenH264 decoder
> > that Fedora ships. Other H.264 implementations handle it just fine.
>
> Interesting, does it mean it works just fine on Debian for example?

It should, though I have not tested it.

- --
Sincerely,
Demi Marie Obenour (she/her/hers)

Invisible Things Lab
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