[Bug 690937] New: Playing video files with gst-launch causes CPU 100%

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=690937
  GStreamer | gst-plugins-base | 0.10.28

           Summary: Playing video files with gst-launch causes CPU 100%
    Classification: Platform
           Product: GStreamer
           Version: 0.10.28
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: yanghuolin21 at 163.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=232444)
 View: https://bugzilla.gnome.org/attachment.cgi?id=232444
 Review: https://bugzilla.gnome.org/review?bug=690937&attachment=232444

patch for the bug

Overview:When playing some video files with gst-lauch, the cpu usage will go up
to nearly 100%.

Steps to Reproduce:
1)gst-launch playbin2 uri=file:///video/[V_H264][A_AAC_LC].m4v

Actual Results:The cpu usage is nearly 100%

Expected Results: the cpu usage is about 10%

platform: iMx53 board derived from one from FSL
The PCM stream output frequency is 48KHz.

additional information:

gst-launch filesrc location= [V_H264][A_AAC_LC].m4v  typefind=true ! aiurdemux
name=demux demux. ! queue max-size-buffers=0 max-size-time=0 !  mfw_vpudecoder
! mfw_v4lsink demux. ! queue max-size-buffers=0 max-size-time=0 ! 
mfw_aacdecoder ! fakesink

when playing problematic files with the above pipeline, the cpu usage is normal

gst-launch filesrc location= [V_H264][A_AAC_LC].m4v typefind=true ! aiurdemux
name=demux demux. ! queue max-size-buffers=0 max-size-time=0 ! 
mfw_vpudecoder ! mfw_v4lsink demux. ! queue max-size-buffers=0 max-size-time=0
! mfw_aacdecoder ! alsasink

when playing problematic files with the above pipeline, the cpu usage is nearly
100%.

The frequency of audio stream on problematic media files is 44.1KHz.
We have created an patch for the problem.

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