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Bug 776551 - [h264parse] [codecparsers] warning observed when parsing some H.264 SEI NALs when payload contains emulation_prevention_three_byte
[h264parse] [codecparsers] warning observed when parsing some H.264 SEI NALs ...
Status: RESOLVED OBSOLETE
Product: GStreamer
Classification: Platform
Component: gst-plugins-bad
1.10.2
Other Linux
: Normal minor
: git master
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Blocks:
 
 
Reported: 2016-12-28 18:29 UTC by Ursula Maplehurst
Modified: 2018-11-03 14:02 UTC
See Also:
GNOME target: ---
GNOME version: ---

Attachments
Patch (1.22 KB, patch)
2016-12-28 18:29 UTC, Ursula Maplehurst 		none Details | Review

Description Ursula Maplehurst 2016-12-28 18:29:09 UTC 
Created attachment 342549 [details] [review]
Patch

I had been seeing the following warning from h264parse when parsing an H.264 stream with some application-specific SEI NALs:

W GStreamer+codecparsers_h264: 17:21:32.788894716 0xb9567db0 gsth264parser.c:1212:gst_h264_parser_parse_sei_message error parsing "Sei message"
W GStreamer+h264parse: 17:21:32.788945174 0xb9567db0 gsth264parse.c:524:gst_h264_parse_process_sei:<h264parse0> failed to parse one or more SEI message

Upon further investigation, it looks like certain SEI NALs were causing nal_reader_read to eat up some 0x03 bytes which are not actually emulation prevention bytes. Patch for the issue attached.

Cheers,
Ursula
Comment 1 GStreamer system administrator 2018-11-03 14:02:27 UTC 
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

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