[Bug 784039] New: Trouble muxing h264 video and aac audio.

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=784039

            Bug ID: 784039
           Summary: Trouble muxing h264 video and aac audio.
    Classification: Platform
           Product: GStreamer
           Version: 1.x
                OS: Linux
            Status: NEW
          Severity: critical
          Priority: Normal
         Component: gstreamer (core)
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: kanishkaman219 at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

I tried this pipeline to mux audio and video streams captured from microphone
and camera respectively. It works fine for sometime, but audio frames are
dropped after sometime.

The video resolution is 2048x2048. When I am trying to capture video at 15 fps
it works fine for about 2 mins. But as I increase the framerate, audio frames
are dropped.

gst-launch-1.0 appsrc stream-type=0 is-live=TRUE
caps="video/x-raw,format=RGB,width=2048,height=2048,framerate=30/1" ! queue !
x264enc bitrate=1000 tune=zerolatency speed-preset=1 ! flvmux name=mux !
filesink location='xyz.flv' ! alsasrc ! audioconvert ! audioresample ! voaacenc
bitrate=64000 ! accparse ! audio/mpeg, mpegversion=4, stream-format=raw ! queue
! mux.

When I try to capture each of these streams individually, both are captured
perfectly. But when I mux them using above pipeline, audio frames are dropped.

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