Playback blockiness issue with BR

YesMaestro wrote on 8/7/2008, 9:02 AM

On a suggestion from megabit in another thread, I created an iso with DVDA5. I created a virtual drive with MagicISO and mounted the iso. I used PowerDVD 8 to play it and the playback is full of blockiness. Here is an image.

http://www.themediazoo.com/BR-problem.jpg

The project was shot on HDV. I rendered out all sections as Blu-ray 1440x1080 25Mbps template (same as what the original footage is). I checked the original m2v's and they are fine. I doubled check the properties of the DVDA5 project to make sure they matched the m2v. Any suggestions? Thanks

Paul

Comments

JJKizak wrote on 8/7/2008, 9:10 AM

I believe that DVD-A5 will recompress anything over 18 meg bitrate total (including sound track) which probably could cause the problem.
JJK

megabit wrote on 8/7/2008, 1:26 PM

Paul, when you say you checked the m2v's - how did you check them, in Vegas timeline or another mpg player? 'Cause from the jpg, I'd say something is wrong with you PowerDVD, not DVDA encoding...

YesMaestro wrote on 8/8/2008, 6:29 AM

I used VLC media player to check the m2v's. PowerDVD play SD dvd's perfectly so I don't think there's a problem. I'll rerender the m2v's down to 18Mbps and see what happens. You also stated in another post about having a UDF driver is needed if you have a burner. Even if I am playing back from a virtual drive, is is still necessary to have t he UDF installed?

Paul

megabit wrote on 8/8/2008, 7:28 AM

Yes, I have noticed that before XP actually "saw" my BD burner (i.e. when I did NOT have the UDF driver installed in the system), even though I only "burned" iso images - DVDA 5 calculated capacities, bitrates etc. as if all it could do was use a standard DVD (as I have a separate DVD burner installed as well).

nolonemo wrote on 8/8/2008, 9:12 AM

"Even if I am playing back from a virtual drive, is is still necessary to have t he UDF installed?"

I don't think so. BTW, I have played back BD ISOs mounted as virtual drives using PowerDVD8, with no problems. (Rendered to 25mpbs 1440x1080i BD template in V8 and authored w/o recompression in DVDA5)

nolonemo wrote on 8/8/2008, 9:15 AM

"I believe that DVD-A5 will recompress anything over 18 meg bitrate total (including sound track) which probably could cause the problem."

I don't think so. If I recall correctly, even if project properties are set to 18mbps, if a complaint 25mbps asset is brought in, DVDA5 will author without recompressing as long as there is space on the size of media selected in project properties.

nolonemo wrote on 8/8/2008, 9:20 AM

"Yes, I have noticed that before XP actually "saw" my BD burner (i.e. when I did NOT have the UDF driver installed in the system), even though I only "burned" iso images - DVDA 5 calculated capacities, bitrates etc. as if all it could do was use a standard DVD (as I have a separate DVD burner installed as well)."

I'm not sure I understand this post. I have created BD ISOs on a laptop with project properties media size set to 25 or 35 GB or whatever it is, and I am certain I don't have a UDF driver on the machine. I can use the laptop to burn BD ISOs to DVDR, but the laptop cannot see the contents of the discs after they are burned. The discs do play in a BD drive on another machine, and the ISO's play back fine if mounted as virtual drives. So this is not a UDF issue. Now, my workflow is to render everything in Vegas. This may be different if you are using DVDA to do the rendering -- but you should never be doing that anyway.

YesMaestro wrote on 8/8/2008, 11:09 AM

Piotr, I installed the UDF reader but it didn't help. Over the weekend I'm going rerender the files down to the 18Mbps rate and see if that makes a difference.

Paul