[Bug 793913] New: avdec_h264: Fails to decode video in Y444 format

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=793913

            Bug ID: 793913
           Summary: avdec_h264: Fails to decode video in Y444 format
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-libav
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: aboya at igalia.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

The attached MP4 file containing h264 video in Y444 format produces no frames
when decoded in GStreamer:

$ gst-launch-1.0 -v filesrc location=counter-yuv444p.mp4 ! qtdemux ! avdec_h264
! identity silent=false ! xvimagesink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
/GstPipeline:pipeline0/GstIdentity:identity0: last-message = event   *******
(identity0:sink) E (type: stream-start (10254), GstEventStreamStart,
stream-id=(string)a57a06654da080f44f249783661184253c1d794fdf13f4985456272685625a94/001,
flags=(GstStreamFlags)GST_STREAM_FLAG_NONE, group-id=(uint)1;) 0x28b4900
Redistribute latency...
/GstPipeline:pipeline0/avdec_h264:avdec_h264-0.GstPad:sink: caps =
video/x-h264, stream-format=(string)avc, alignment=(string)au,
level=(string)1.3, profile=(string)high-4:4:4,
codec_data=(buffer)01f4000dffe1001d67f4000d919b28283f602d4180415000000300100000030068f142996001000668ebec448440,
width=(int)320, height=(int)240, framerate=(fraction)3/1,
pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive,
colorimetry=(string)bt601
/GstPipeline:pipeline0/avdec_h264:avdec_h264-0.GstPad:src: caps = video/x-raw,
format=(string)Y444, width=(int)320, height=(int)240,
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, chroma-site=(string)mpeg2,
colorimetry=(string)bt601, framerate=(fraction)3/1
Redistribute latency...
/GstPipeline:pipeline0/GstIdentity:identity0: last-message = event   *******
(identity0:sink) E (type: eos (28174), ) 0x7f595000a890
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Got EOS from element "pipeline0".
Execution ended after 0:00:00.000255125
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

The file was generated with GStreamer x264 element with default options.

$ gst-launch-1.0 multifilesrc location="img/frame_%02d.png" index=1
caps="image/png,framerate=\(fraction\)3/1" ! pngdec ! videoconvert ! videorate
! x264enc ! qtmux ! filesink location=counter-yuv444p.mp4

The file plays flawlessly in both ffplay and mpv.

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