[Bug 726669] New: gst_omx_video_find_nearest_frame and buffers with only H264 SPS/PPS

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Tue Mar 18 15:47:02 PDT 2014


https://bugzilla.gnome.org/show_bug.cgi?id=726669
  GStreamer | gst-omx | 1.2.4

           Summary: gst_omx_video_find_nearest_frame and buffers with only
                    H264 SPS/PPS
    Classification: Platform
           Product: GStreamer
           Version: 1.2.4
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-omx
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: xlazom00 at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


I don't know if this problem is BCM(rpi) openmax only
but openmax encoder provide sps + pps buffer as separate buffer than follow
with  IDR buffer
http://cgit.freedesktop.org/gstreamer/gst-omx/tree/omx/gstomxh264enc.c#n517

But gst_omx_video_find_nearest_frame assign one frame for SPS/PPS buffer and
one for IDR and then we always miss one frame

I don't know if we can simple ignore buffer with sps/pps and simple use
gst_video_encoder_set_headers and gstvideoencoder handle/add sps/pps to next
IDR buffer or we should do this in omxvideoenc?

Any experience from other openmax ?

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