[Bug 736100] New: video-info: doesn't return the right I420 image size for certain resolutions

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=736100
  GStreamer | gst-plugins-base | git

           Summary: video-info: doesn't return the right I420 image size
                    for certain resolutions
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: aleix at oblong.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Not sure if the above is the right description for the bug.

I'm integrating I420 frames coming from the webrtc project into GStreamer. And
I'm seeing different byte sizes between the two.

For example, an I420 frame with width=1364 and height=768:

webrtc reported size = 1571328
gstreamer reported size = 1572864

>From what I know, I420 is 12bits per pixel, which matches webrtc value =
1364x768x1.5 = 1571328.

The error in GStreamer is:

0:00:32.577537792 16018 0x7fd410005800 ERROR                default
video-frame.c:152:gst_video_frame_map_id: invalid buffer size 1571328 < 1572864

I have verified also this code:

  GstVideoInfo video_info;

  gst_video_info_init (&video_info);
  gst_video_info_set_format (&video_info, GST_VIDEO_FORMAT_I420,
                             1364, 768);

And printing GST_VIDEO_INFO_SIZE (&video_info) returns 1572864.

Any idea who's wrong?

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