vaapidecodebin (h264) and change resolution.

[Matteo Valdina]

Thanks,

I open the bug https://bugzilla.gnome.org/show_bug.cgi?id=786173 with a
test application.

Best
Matteo

On Fri, Aug 11, 2017 at 3:22 AM, Víctor Jáquez <vjaquez at igalia.com> wrote:

> On Thu, 10 Aug 2017 at 21:13, Matteo Valdina wrote:
> > Hi y'all,
> >
> > I create a prototype that encode a video stream and sends RTP to the
> > network.
> > The other side is receiving the RTP stream and decode.
> >
> > My problem is when the encoded stream changes the resolution.
> > vaapidecodebin (h264) decode a corrupted stream. The corrupted frame is
> > first couples line some colors and the rest is green.
>
> It sounds like a bug too.
>
> > I noticed in logs that when h264parse sense the resolution changes the
> > vaapidecode change src caps with old width and height:
> >
> > 0:00:11.141138375 16310      0x11594f0 INFO               GST_EVENT
> > gstevent.c:809:gst_event_new_caps: creating caps event video/x-h264,
> > stream-format=(string)avc, alignment=(string)au,
> > codec_data=(buffer)01640028ffe1002a67640028ac3c42
> 01e0089797ff0001000110000003001000000303ce00000302dc6c000089
> 545bdef72801000568ee01070c,
> > level=(string)4, profile=(string)high, pixel-aspect-ratio=(fraction)1/1,
> > width=(int)1920, height=(int)1080, framerate=(fraction)30/1,
> > interlace-mode=(string)progressive, parsed=(boolean)true
> > 0:00:11.143496386 16310      0x11594f0 INFO             vaapidecode
> > gstvaapidecode.c:208:gst_vaapidecode_update_sink_caps:<decoder-bin-0>
> new
> > sink caps = video/x-h264, stream-format=(string)avc,
> alignment=(string)au,
> > codec_data=(buffer)01640028ffe1002a67640028ac3c42
> 01e0089797ff0001000110000003001000000303ce00000302dc6c000089
> 545bdef72801000568ee01070c,
> > level=(string)4, profile=(string)high, pixel-aspect-ratio=(fraction)1/1,
> > width=(int)1920, height=(int)1080, framerate=(fraction)30/1,
> > interlace-mode=(string)progressive, parsed=(boolean)true
> > 0:00:11.145759769 16310      0x11594f0 INFO               h264parse
> > gsth264parse.c:1850:gst_h264_parse_update_src_caps:<h264-parse-dec-0>
> PAR
> > 1/1
> > 0:00:11.145988562 16310      0x11594f0 INFO               baseparse
> > gstbaseparse.c:3986:gst_base_parse_set_latency:<h264-parse-dec-0>
> min/max
> > latency 0:00:00.033333333, 0:00:00.033333333
> > 0:00:11.150561630 16310      0x11594f0 INFO             vaapidecode
> > gstvaapidecode.c:373:gst_vaapidecode_update_src_caps:<decoder-bin-0> new
> > src caps = video/x-raw(memory:VASurface), format=(string)NV12,
> > width=(int)1280, height=(int)720, interlace-mode=(string)progressive,
> > multiview-mode=(string)mono,
> > multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/
> left-flipped/left-flopped/right-flipped/right-flopped/
> half-aspect/mixed-mono,
> > pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1
>
> Please open a bug, and provide a test app if it is possible. Perhaps we are
> forgetting to execute a drain the decoder before changing the caps.
>
> vmjl
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> gstreamer-devel at lists.freedesktop.org
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>



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