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-   -   Vegas Pro 12 (all builds) MPEG encoding bug (https://www.dvinfo.net/forum/what-happens-vegas/513986-vegas-pro-12-all-builds-mpeg-encoding-bug.html)

Juris Lielpeteris February 2nd, 2013 02:40 AM
Vegas Pro 12 (all builds) MPEG encoding bug
 
Take care, Vegas 12 have MPEG HD for Blu-ray encoding bug!
Original SMPTE Bars (NTSC):
http://s017.radikal.ru/i413/1302/02/4165e0df2a88.jpg
Encoded in Blu-ray 1920x1080-60i, 25 Mbps video stream
http://s05.radikal.ru/i178/1302/17/f5a3123a6e24.jpg
Encoding in PAL gives the same picture
Encoding in XDCAM HD 422 or XDCAM EX looks fine
Encoding with older versions of Vegas also looks fine.

Christopher Young February 3rd, 2013 12:39 AM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
Agreed! Seeing same problem her in PAL BD render. Have you filed a bug report with Sony?

Chris Young
CYV Productions
Sydney

Juris Lielpeteris February 3rd, 2013 05:53 AM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
Not yet, this month I am installing some workstations with Vegas Pro 12 in Latvian TV.

Eric Olson February 3rd, 2013 07:31 PM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
Quote:
Originally Posted by Juris Lielpeteris (Post 1776905)
Not yet, this month I am installing some workstations with Vegas Pro 12 in Latvian TV.
Does the bug go away in 32-bit float mode? In 8-bit mode, all conversions between computer RGB and studio RGB levels need to be explicitly specified. This appears to be a design decision made because of the limited dynamic range of any type of 8-bit image processing. Try inserting Sony Levels somewhere in your Video Output FX filter chain and select either the Computer RGB to Studio RGB preset or the Studio RGB to Computer RGB preset as appropriate.

Juris Lielpeteris February 3rd, 2013 08:07 PM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
Quote:
Originally Posted by Eric Olson (Post 1777005)
Does the bug go away in 32-bit float mode?
Bug is exactly the same in 32-bit floating point video levels mode and similar in 32 bit full range mode. I never use Computer RGB levels, because they are not compatible with broadcast standards.

Eric Olson February 3rd, 2013 10:41 PM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
Quote:
Originally Posted by Juris Lielpeteris (Post 1777011)
Bug is exactly the same in 32-bit floating point video levels mode and similar in 32 bit full range mode. I never use Computer RGB levels, because they are not compatible with broadcast standards.
Looking at the images again, I see that the white and black levels are okay, so never mind my suggestion about swing levels. The errors in the colors seem too big to be simply quantization errors. Maybe this is the result a Rec601 versus Rec709 mixup.

Juris Lielpeteris February 26th, 2013 03:19 PM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
I got a reply from the SCS, but unfortunately without a solution, just a recommendation to check whether I really have installed the latest version of Vegas Pro...

Juris Lielpeteris March 4th, 2013 03:13 PM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
Long-term correspondence with SCS continues to provide no improvement.

Gerald Webb March 5th, 2013 04:13 AM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
Juris,
Do you really, really have the latest version installed. Have you checked again? lol.
Sorry, have to laugh, tech support at its best.

Juris Lielpeteris March 5th, 2013 10:53 AM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
Since 2002, I am a registered user of SonicFoundry Vegas (v3.0), but so far I have never had need to use the help from the SCS support. However, I know how to find find the About screen :D

Juris Lielpeteris March 18th, 2013 07:33 AM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
SCS acknowledged that the problem exists:
Quote:
This is now listed in the known issue database to be resolved in a future application update. Thank you for reporting this issue.

Juris Lielpeteris July 24th, 2013 07:26 AM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
The bug is fixed in a build 670 :)
Quote:
Fixed a bug when rendering MainConcept MPEG-2 files that caused YUV color values from the source file to be changed in the rendered file.

Christopher Young July 25th, 2013 10:49 AM
Re: Vegas Pro 12 (all builds) MPEG encoding bug
 
Thx for the heads-up Juris. It took them some time though!

Chris Young
CYV Productions
Sydney


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