[gstreamer-bugs] [Bug 608786] New: [mpegtsmux] Internal H.264 byte-stream wrapping isn't working correctly
GStreamer (bugzilla.gnome.org)
bugzilla at gnome.org
Tue Feb 2 04:01:08 PST 2010
https://bugzilla.gnome.org/show_bug.cgi?id=608786
GStreamer | gst-plugins-bad | unspecified
Summary: [mpegtsmux] Internal H.264 byte-stream wrapping isn't
working correctly
Classification: Desktop
Product: GStreamer
Version: unspecified
OS/Version: All
Status: UNCONFIRMED
Severity: major
Priority: Normal
Component: gst-plugins-bad
AssignedTo: gstreamer-bugs at lists.sourceforge.net
ReportedBy: ext-veli-matti.nurmenniemi at nokia.com
QAContact: gstreamer-bugs at lists.sourceforge.net
GNOME target: ---
GNOME version: ---
Created an attachment (id=152827)
--> (https://bugzilla.gnome.org/attachment.cgi?id=152827)
Access Unit Delimeters codes added
Problem:
Some players (e.g. Sony Bravia) won't display video when GStreamer's
mpegtsmuxer is used for transcoding MP4 H.264 to TS H.264 (byte-stream).
Used pipeline:
mpegtsmux name=mux ! filesink location=OUTPUT.TS filesrc location=INPUT.MP4 !
qtdemux name=demux ! queue ! mux. demux. ! queue ! mux.
Solution:
Mpegtsmuxer needs to be modified to add Access Unit Delimiter before each AVC
access units. In H.264 standard (ITU-T Rec. H.264 | ISO/IEC 14496-10) Access
Unit Delimiter is an optional (may) feature. But in contrast to that, in
Transport Stream standard (ITU-T Rec. H.222.0 | ISO/IEC 13818-1:
http://neuron2.net/library/avc/T-REC-H%5B1%5D.222.0-200403-I!Amd3!PDF-E.pdf)
Access Unit Delimiter is upgraded to required (shall) feature.
Example solution:
See attached mpegtsmux_h264.c.
All the modifications are under 'ADD_ACCESS_UNIT_DELIMITER' flag (defined by
default). Note that this is just proto code.
With these mods, the resulting TS file is playable e.g. with Sony Bravia.
Notes:
This mod can maybe be added into h264parse internal byte-stream conversion as
well??
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