Recommendations for rendering for bluray in DVDA

[John Rofrano]

Why don’t you just use the default Blu-ray template and not change it? I’ve never had DVD Architect re-render a video that I’ve created with the provided templates. A single-sided Blu-ray disc can hold 2 hrs 15 minutes of video using the 25Mbps MPEG-2 template. Is your video longer than that?

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Nigel O’neill]

Thanks John,

As I said in my post, the total video content is 3 hours (180 minutes), hence why I use had to use VBR.

I used this calculator:

https://dvd-hq.info/bitrate_calculator.php

Source length = 180 minutes
Audio format = 384 kbps
Custom bitrate limit = 25000 (as it did not have a preset for BD 25)
Media size = BD SL

It then recommendeds using 2 pass VBR plus the min, max and avg settings I posted above.

If I set the rate limit to = Force CBR, I get a CBR rate of 17150 mbps.

When in DVDA, it defaults at 18 mbps, which to me implies that if you give it anything encoding other than at 18 mbps, it will re-encode it. Yes, I can adjust the slider to suit whatever I want, but it appears that if you give DVDA anything other than CBR, it wants to re-encode it.

I have tried not to change the DVDA defaults unless absolutely necessary, but some are necessary I believe, such as setting the frame rate to 25i, to match my PAL content.

I have to admit every project I have done in Bluray has exceeded 2 hours 15 minutes, and I have put up with the 12 hour re-renders. Quality wise it appears unaffected, but it is so time consuming.

The intent of my post is to determine if my workflow is flawed, and I am stumped.

My system specs: Intel i7 970, 12GB RAM, ASUS P6T, Vegas Pro 11 (x32/x64), Windows 7 x64 Ultimate, Vegas Production Assistant 1.0, VASST Ultimate S Pro 4.1, Neat Video Pro 2.6

[John Rofrano]

[Nigel O'Neill] “As I said in my post, the total video content is 3 hours (180 minutes), hence why I use had to use VBR. “

Oops… sorry you did give the length in your original post and I missed it. 🙂

[Nigel O'Neill] “When in DVDA, it defaults at 18 mbps, which to me implies that if you give it anything encoding other than at 18 mbps, it will re-encode it. “

Where are you getting this template from? My Blu-ray 1440×1080-50i, 25 Mbps video stream template defaults to 25,000,000.

[Nigel O'Neill] “I have tried not to change the DVDA defaults unless absolutely necessary, but some are necessary I believe, such as setting the frame rate to 25i, to match my PAL content.”

Once again, where are you getting this template from? My Blu-ray 1440×1080-50i, 25 Mbps video stream template defaults to 25fps.

[Nigel O'Neill] “The intent of my post is to determine if my workflow is flawed, and I am stumped.”

You should be starting with the Main Concept MPEG-2 render type with the Blu-ray 1440×1080-50i, 25 Mbps video stream template. Check VBR and change the Average (bps) to 17,150,000 and don’t touch anything else. Then render.

I just tried this and DVD Architect Pro 5.2 did not re-render the video. If it still wants to re-render, press the Optimise button, go to the Video tab and look at the Recompression Settings to find out why. It may be that your bit rate calculation was off and you need to lower it. The Recompression Settings will show you exactly what DVD Architect will use to re-render. Then just use those settings in Vegas Pro for the initial render and you should be fine.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Nigel O’neill]

OK, In SVP, using the 1440 bluray template defaults to VBR, and I have change the radio button to CBR so that it uses CBR, and therefore, 25 mbps. You are correct in that regard. I did realise that the content was going to be longer than that which could fit, hence why I starting using 2 pass VBR.

[John Rofrano] Where are you getting this template from? My Blu-ray 1440×1080-50i, 25 Mbps video stream template defaults to 25,000,000.

Woops! I just realised what had happened. I had started the project as a DVD and was requested later to deliver in Bluray as well, so instead of using the wizard and redoing my backgounds and buttons, I adjusted the template via properties. My bad 🙂 Lesson learned!

[John Rofrano] Once again, where are you getting this template from? My Blu-ray 1440×1080-50i, 25 Mbps video stream template defaults to 25fps.

The DVDA Bluray wizard offers MPEG-2 1440×1080-50i 16:9, and when I checked the properties after using the wizard, the frame rate is 25i, but the bitrate is 18 mbps, not 25 mbps. Are you suggesting I slide it up to 25 mbps to match what I am rendering out from Vegas?

Thanks in advance for your assistance. Always appreciated.

My system specs: Intel i7 970, 12GB RAM, ASUS P6T, Vegas Pro 11 (x32/x64), Windows 7 x64 Ultimate, Vegas Production Assistant 1.0, VASST Ultimate S Pro 4.1, Neat Video Pro 2.6

[John Rofrano]

[Nigel O'Neill] “The DVDA Bluray wizard offers MPEG-2 1440×1080-50i 16:9, and when I checked the properties after using the wizard, the frame rate is 25i, but the bitrate is 18 mbps, not 25 mbps. Are you suggesting I slide it up to 25 mbps to match what I am rendering out from Vegas?”

OK, we are talking about two completely different thinks here. I’m talking about Vegas Pro and you are talking about DVD Architect. You should render correctly in Vegas Pro and don’t worry about DVD Architect settings. Get DVD Architect to accept your video without re-rendering and it will simply use your video regardless of it’s own settings. That’s all you need to care about.

~jr

http://www.johnrofrano.com
http://www.vasst.com