Log in

View Full Version : bframes restriction on HW?


Forteen88
10th May 2009, 13:40
Hey,
I wonder, what's the bframes restriction on different hardware?
For example, is 3 bframes maximum allowed for Blu-ray and HD DVD?

Thanks

shon3i
10th May 2009, 13:42
IIRC, HDDVD allow up to 7 bframes, Blu-Ray only 3.

Forteen88
10th May 2009, 14:00
IIRC, HDDVD allow up to 7 bframes, Blu-Ray only 3.Typical that Bluray won over HD DVD :P Thanks for the info, will set all my encodes to 3 bframes (as I've done to all I've encoded except cartoon/anime/3DCG).

Chengbin
10th May 2009, 14:20
Out of curiosity, what if you try to play a video with 4 b-frames on a Blu-ray player?

Dark Shikari
10th May 2009, 14:23
It'd probably work fine, since many of the chipsets are re-used between different devices and so often support features that the Blu-ray standard doesn't strictly require.

Chengbin
10th May 2009, 14:40
What I mean was what if I try to play a video that is out of the chipset's capability, like 10 b-frames? What will happen?

LoRd_MuldeR
10th May 2009, 15:31
What I mean was what if I try to play a video that is out of the chipset's capability, like 10 b-frames? What will happen?

If the player detects that your video isn't supported by the decoder chip, you will get an error message or simply a black screen.

Otherwise you will see garbled output, I guess...