[Bug 795372] New: vaapi encoding requires stream-format=byte-stream on radeonsi since 1.14

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=795372

Bug ID: 795372
Summary: vaapi encoding requires stream-format=byte-stream on
radeonsi since 1.14
Classification: Platform
Product: GStreamer
Version: 1.14.0
OS: Linux
Status: NEW
Severity: normal
Priority: Normal
Component: gstreamer-vaapi
Assignee: gstreamer-***@lists.freedesktop.org
Reporter: haagch+***@frickel.club
QA Contact: gstreamer-***@lists.freedesktop.org
CC: ***@gmail.com, ***@igalia.com
GNOME version: ---

RX 480, latest mesa git.
Since gstreamer 1.14 a simple vaapi encoding pipeline that has been working on
1.12.4 never starts encoding and produces a 0 byte output file when pressing
ctrl+c:

$ LANG=en gst-launch-1.0 videotestsrc ! vaapih264enc !
"video/x-h264,profile=baseline" ! h264parse ! matroskamux ! filesink
location=output.mkv
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Got context from element 'vaapiencodeh264-0': gst.vaapi.Display=context,
gst.vaapi.Display=(GstVaapiDisplay)"\(GstVaapiDisplayGLX\)\ vaapidisplayglx0";
^Chandling interrupt.
Interrupt: Stopping pipeline ...
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
^C

I was told this is something that should be reported, so here it is.

The workaround for now is to specify stream-format=byte-stream yourself, like
this:
gst-launch-1.0 videotestsrc ! vaapih264enc !
"video/x-h264,profile=baseline,stream-format=byte-stream" ! h264parse !
matroskamux ! filesink location=output.mkv
this pipeline works fine with gstreamer 1.14.

The same is true for an equivalent h.265 pipeline:
gst-launch-1.0 videotestsrc ! vaapih265enc !
"video/x-h265,stream-format=byte-stream" ! h265parse ! matroskamux ! filesink
location=output.mkv

Bugzilla shows a few other issues that may be relevant, for example maybe bug
732167.

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=795372

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

What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://bugzilla.gnome.org/
| |show_bug.cgi?id=795340

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=795372

Julien Isorce <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=795372

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

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

--- Comment #1 from GStreamer system administrator <***@gstreamer.net> ---
-- GitLab Migration Automatic Message --

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