MPEG2 encoding for SD assets in BD

srfscenar · 26th January 2013, 22:55

Hi,

one, maybe silly question...
When you encode in Mpeg2 an SD asset for use in Blu-ray (like an extra clip) what is the average bit-rate you use?
I know it is of course a matter of duration and space, but do you usually set it as high as 25-35MBit or since its an SD resolution, it does not have to be that big?

Thanks.

TheSkiller · 27th January 2013, 14:34

It doesn't have to be that much. SD in MPEG2 is pretty much maxed out at 15 Mbit/s with really really difficult footage (fast moving action with lots of sharp details and all interlaced).

You will be absolutely fine with DVD bitrates for SD MPEG2, i.e. <10 Mbit/s. In 95% of all cases you wouldn't even be able to hit a bitrate as high as 25 Mbit/s unless you do CBR with stuffing bits.

srfscenar · 27th January 2013, 15:23

Thank you!

I will try it now!

srfscenar · 27th January 2013, 15:29

Like a charm!!!!!

srfscenar · 27th January 2013, 19:17

So actually, its the same settings like encoding it for DVD, with only change the profile which must be High, right?

TheSkiller · 27th January 2013, 20:51

No, Main Profile is fine – you can put the very same MPEG2 video you put on a DVD on Blu-ray.

filler56789 · 27th January 2013, 21:11

Quote:

Originally Posted by srfscenar

So actually, its the same settings like encoding it for DVD, with only change the profile which must be High, right?

Not exactly. The GOPs can be 1 or 2 seconds long

, and the maximum bitrate may go far beyond 10Mbps of course.

mp3dom · 28th January 2013, 01:40

And progressive video for primary video is not allowed, so if you have a progressive file, you can use restream to flag it as interlaced TFF without re-encoding.

26th January 2013, 22:55	#1 \| Link
srfscenar Registered User Join Date: May 2003 Posts: 492	MPEG2 encoding for SD assets in BD Hi, one, maybe silly question... When you encode in Mpeg2 an SD asset for use in Blu-ray (like an extra clip) what is the average bit-rate you use? I know it is of course a matter of duration and space, but do you usually set it as high as 25-35MBit or since its an SD resolution, it does not have to be that big? Thanks. __________________ " 2 minds are better than 1 " Last edited by srfscenar; 27th January 2013 at 14:17.

27th January 2013, 15:23	#3 \| Link
srfscenar Registered User Join Date: May 2003 Posts: 492	Thank you! I will try it now! __________________ " 2 minds are better than 1 "

27th January 2013, 15:29	#4 \| Link
srfscenar Registered User Join Date: May 2003 Posts: 492	Like a charm!!!!! __________________ " 2 minds are better than 1 "

27th January 2013, 19:17	#5 \| Link
srfscenar Registered User Join Date: May 2003 Posts: 492	So actually, its the same settings like encoding it for DVD, with only change the profile which must be High, right? __________________ " 2 minds are better than 1 "

27th January 2013, 14:34	#2 \| Link
TheSkiller Registered User Join Date: Dec 2007 Location: Germany Posts: 632	It doesn't have to be that much. SD in MPEG2 is pretty much maxed out at 15 Mbit/s with really really difficult footage (fast moving action with lots of sharp details and all interlaced). You will be absolutely fine with DVD bitrates for SD MPEG2, i.e. <10 Mbit/s. In 95% of all cases you wouldn't even be able to hit a bitrate as high as 25 Mbit/s unless you do CBR with stuffing bits.

27th January 2013, 20:51	#6 \| Link
TheSkiller Registered User Join Date: Dec 2007 Location: Germany Posts: 632	No, Main Profile is fine – you can put the very same MPEG2 video you put on a DVD on Blu-ray.

28th January 2013, 01:40	#8 \| Link
mp3dom Registered User Join Date: Jul 2003 Location: Italy Posts: 1,135	And progressive video for primary video is not allowed, so if you have a progressive file, you can use restream to flag it as interlaced TFF without re-encoding.