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View Full Version : Does blu-ray support different codecs within one title?


Emelyanov
20th July 2009, 08:15
I have to place mpeg-2 and mpeg-4 content on the same disk. Does blu-ray support different codecs within one title?
The matter is Power DVD get black screen while mpeg-2 playback.
Advise please.

deank
20th July 2009, 09:43
As long as different codecs are used in different .m2ts files there should be no problem to combine H264 + MPEG-2 + VC-1 in one disc.
A single playlist (which you call title) should refer to m2ts files with the same codec for primary video.

Emelyanov
20th July 2009, 10:04
So i have to make individual playlist for each different coded clip and put them in the same MO. Right?

deank
20th July 2009, 10:09
Yes, for example

00000.mpls can refer to:
- 00000.m2ts (H.264/AVC)
- 00005.m2ts (H.264/AVC)
- 00007.m2ts (H.264/AVC)

00001.mpls can refer to:
- 00001.m2ts (MPEG-2)
- 00002.m2ts (MPEG-2)
- 00006.m2ts (MPEG-2)

00003.mpls can refer to:
- 00003.m2ts (VC-1)
- 00004.m2ts (VC-1)
- 00008.m2ts (VC-1)

Dean

p.s. I'm almost sure that you can combine different codecs in the same playlist, but I can't think of a freeware program that will allow you to do it, so it is safer to do it separately.

Emelyanov
20th July 2009, 10:39
Dean,
thank you.
I use Scenarist HDMV for the authoring. So the only thing i can do - combine playlists from clips. There is no allowed to collect clips with different codecs in one playlist. So i do different lists within movie title.

Ghitulescu
20th July 2009, 14:56
Dean,
thank you.
I use Scenarist HDMV for the authoring. So the only thing i can do - combine playlists from clips. There is no allowed to collect clips with different codecs in one playlist. So i do different lists within movie title.

Take the advice of Scenarist :)
If an optical media allows multiple parameters, it then requires that all parameters be the same within the same logical unit.
For instance: a DVD should be either PAL or NTSC. All clips in one VOB should have the same DAR, audio tracks number, audio tracks format (including the number of channels within one track) - you got the idea.
All the BDs I have contain the same codec everywhere (within one disk).

deank
20th July 2009, 15:08
There are a lot of BD titles with VC-1 + MPEG2.