[Bug 787261] New: vaapi H.264 decode intra-refresh dosn't work

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=787261

Bug ID: 787261
Summary: vaapi H.264 decode intra-refresh dosn't work
Classification: Platform
Product: GStreamer
Version: git master
OS: Linux
Status: NEW
Severity: normal
Priority: Normal
Component: gstreamer-vaapi
Assignee: gstreamer-***@lists.freedesktop.org
Reporter: ***@telerob.com
QA Contact: gstreamer-***@lists.freedesktop.org
CC: ***@gmail.com, ***@igalia.com
GNOME version: ---

If vaapih264dec is used to decode a low-latency stream with intra-refresh all
frames are dropped.

Following quick hack works but may break all other things
(gstvaapidecoder_h264.c).

.....
priv->decoder_state |= sps_pi->state;
if (!(priv->decoder_state & GST_H264_VIDEO_STATE_GOT_I_FRAME)) {
/* removed don't wait for a valid I-Frame (intra refresh problem)
if (priv->decoder_state & GST_H264_VIDEO_STATE_GOT_P_SLICE)
goto drop_frame;
*/
.....

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=787261

***@telerob.com changed:

What |Removed |Added
----------------------------------------------------------------------------
Summary|vaapi H.264 decode |vaapi H.264 decode
|intra-refresh dosn't work |intra-refresh doesn't work

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=787261

Víctor Manuel Jáquez Leal <***@igalia.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO

--- Comment #1 from Víctor Manuel Jáquez Leal <***@igalia.com> ---
Thanks for reporting this.


The email thread that sparked this issue is:

https://lists.freedesktop.org/archives/gstreamer-devel/2017-September/065241.html

Two things:

1\ Could you provide a patch with you fix. It doesn't matter if it is not "a
proper fix", it just to ease our lives as maintainers :D

2\ And this is the important one: could you provide a sample file or test
configuration with intra-refresh streams.

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=787261

--- Comment #2 from sreerenj <***@gmail.com> ---
Can you try with

.. ! vaapih264dec low-latency=true !...

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=787261

--- Comment #3 from sreerenj <***@gmail.com> ---
(In reply to sreerenj from comment #2)

Post by "GStreamer" (GNOME Bugzilla)
Can you try with
.. ! vaapih264dec low-latency=true !...

Ah, sorry. Victor already suggested it in the mail thread :)

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=787261

GStreamer system administrator <***@gstreamer.net> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |RESOLVED
Resolution|--- |OBSOLETE

--- Comment #4 from GStreamer system administrator <***@gstreamer.net> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
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