[Bug 770535] Playbin fails to decode stream when gst-vaapi is installed

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=770535

--- Comment #11 from Hyunjun Ko <zzoon at igalia.com> ---
(In reply to Holger Kaelberer from comment #10)
> Same problem here: MPEG-TS live stream with a h.264 profile 3.x, not
> supported by our gst-vaapi/libva stack and the playbin hangs up with an
> autoplugged vaapidecode.
> 
> IIUC there is now mechanism in place to have this handled automatically on a
> decodebin-level, right?
> 
> What would be the recommended workaround by now? Listen to the src-caps of
> h264parse and react on blacklisted h.264 profile-levels by pausing the
> pipeline and replacing the h264-decoder manually?
> 
> Thanks,
>    Holger

Workaround is forcing to expose only au alignment in sink caps for h264
vaapidecoder.

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