VC-1 coded and MPEG-4 H.264 coded BDs

[thunderhawk]

I wonder how many hours you can store on a single/double layer BD
when using VC-1 / MPEG-4 H.264 ...

When using MPEG-2 you'll get 2 hours on a single layered BD...

But I can't find it anywhere...


Any idea anyone?

[thunderhawk]

... nobody seems to know it :?

[Cooter]

When using MPEG-4 H.264 on a double layer BD, I'm pretty sure you'll only get 4 hours. On the other hand, when using VC-1 on a single layer BD, you'll get close to 6 hours. If you want more details, I'd check out the Tech Head Web Site.

[LembasBread]

Doesn't it depend on bit rate and disc speed? You could potentially fit around 6 hours of MPEG-2 on a BD-50, but at a low bit rate. Same with the other codecs. But, the quality of the picture can fluctuate depending on the level of compression on any of the codecs.

But, yeah I've heard that at max bit rate and current disc speed for any codec a BD-50 can do about 4 hours of video. It also depends on how much room you want left for audio.

[WriteSimply]

LembasBread is correct in that it depends on the bitrate.

If you use the bandwith of 48Mbps on a BD50, you would yield 138 minutes and 53 seconds. Using PCM at 5.1 16-bit/48Hz, that will leave about 43Mbps for video - MPEG-2, AVC or VC-1. Not many movies needs 43Mbps every second for 138 minutes and 53 seconds.


fuad

[Shadowself]

Originally Posted by Cooter

When using MPEG-4 H.264 on a double layer BD, I'm pretty sure you'll only get 4 hours. On the other hand, when using VC-1 on a single layer BD, you'll get close to 6 hours. If you want more details, I'd check out the Tech Head Web Site.

Look at Benes' great thread on bit rates.

You'll notice of all the movies done with VC-1 and AVC the average total bit rate is in the low to mid 20's Mbps -- it does not matter that it is VC-1 or AVC. In fact the average bit rate for just video is higher for VC-1 than AVC (H.264 Part 10).

You won't get six hours onto a single layer BD (or dual layer HD DVD) without compressing it so far that the image quality suffers horribly.

The most prevalent falacy I run into from the pro HD DVD & pro VC-1 crowd (and those who have been listening to someone from these crowds) is that you can get 6+ hours of "High Quality" video and sound at full 1080p rates on a dual layer HD DVD disk. It's just not going to happen -- no matter which of the current compression methodologies are used.

[JTK]

^^ Look at his post history. You're calling "BS" and then some alright.