[Bug 739196] video/x-xvid changed to video/mpeg,mpegversion=4

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=739196
  GStreamer | gst-plugins-base | 1.x

--- Comment #23 from Athanasios Oikonomou <athoik at gmail.com> 2014-11-09 17:54:50 UTC ---
The following is what we receive to render function of our sink:

unpacked xvid:

0x000000: 00 00 01 b0 f5 00 00 01 ........
0x000008: b5 09 00 00 01 00 00 00 ........
0x000010: 01 20 08 86 87 ff ff 0a . ......
0x000018: ad 88 82 19 0a 31 00 00 .....1..
0x000020: 01 b2 58 76 69 44 30 30 ..XviD00
0x000028: 34 33 00 00 01 b6 10 00 43......
0x000030: 0c 06 30 47 b6 fe 36 db ..0G..6.
0x000038: f8 db 6f e3 6d bf 8d b6 ..o.m...
0x000040: fe 36 db f8 db 6f e3 6d .6...o.m
0x000048: bf 8d b6 fe 36 db f8 db ....6...
0x000050: 6f e3 6d bf 8d b6 fe 36 o.m....6
0x000058: db f8 db 6f e3 6d bf 8d ...o.m..
0x000060: b6 fe 36 db f8 db 6f e3 ..6...o.
0x000068: 6d bf 8d b6 fe 36 db f8 m....6..

packed xvid:

0x000000: 00 00 01 b0 f5 00 00 01 ........
0x000008: b5 09 00 00 01 00 00 00 ........
0x000010: 01 20 08 86 87 ff ff 0a . ......
0x000018: ad 88 82 19 0a 31 00 00 .....1..
0x000020: 01 b2 44 69 76 58 35 30 ..DivX50
0x000028: 33 62 31 33 39 33 70 00 3b1393p.
0x000030: 00 01 b2 58 76 69 44 30 ...XviD0
0x000038: 30 34 33 00 00 01 b6 10 043.....
0x000040: 00 0c 06 30 47 b6 fe 36 ...0G..6
0x000048: db f8 db 6f e3 6d bf 8d ...o.m..
0x000050: b6 fe 36 db f8 db 6f e3 ..6...o.
0x000058: 6d bf 8d b6 fe 36 db f8 m....6..
0x000060: db 6f e3 6d bf 8d b6 fe .o.m....
0x000068: 36 db f8 db 6f e3 6d bf 6...o.m.

Probably I have to check with a small sample that render receives the "same"
data and ofc that GST_BUFFER_PTS(buffer) is same.

Maybe the drivers look at DivX503b1393p (packed bitstream) and decide do handle
stream in another way.

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