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Selection correct template in Vegas & DVDA
My camcorder a Sony HDR-CX550 which is shooting HD which Vegas tells me is 1920x1080i upper field first. The I go to render it for Blu-ray & select to match input. I wish to make a Blu-ray disk but find that the = sign is displayed against 2 templates one at 10 & the other at 16. Presumable the 16 one should produce higher quality. The first time I rendered out the file I didn’t notice the 16 option.
I created the 2 file & imported them into DVDA & selected under project properties Blu-ray. This box tells me that the file is MPEG But also allows me to alter it to AVC & for both formats appears to have defaulted to 2 as a bit rate. If I click each format I’m able to change the bit rate from 2 to 40.
What is this project properties box all about?
I can understand DVDA re rendering to a lesser quality but not up. If I have selected Blue-ray why is it mentioning MPEG2 at all unless I can have both on a disk at once?
Should I have used the higher bit rate in Vegas for rendering?
And finally if DVDA always wants separate audio & video file to make a disk without re rendering why doesn’t Vegas automatically create the 2 files at once when you select files for rendering?
Thanks in advance
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5 Replies
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[Paul Gregory] “What is this project properties box all about? “
This just affects the media that DVD Architect creates like menus. It does not affect your video unless you drop AVI files or something in and expect DVD Architect to render them for you but that’s not what you’re doing.
[Paul Gregory] ” If I have selected Blue-ray why is it mentioning MPEG2 at all unless I can have both on a disk at once? “
Becasue Blu-ray discs can use MPEG2 or AVCHD so you have a choice of which you want to make.
[Paul Gregory] “Should I have used the higher bit rate in Vegas for rendering? “
Yes, absolutely. I would always use 16Mbps when working with AVCHD.
[Paul Gregory] “And finally if DVDA always wants separate audio & video file to make a disk without re rendering why doesn’t Vegas automatically create the 2 files at once when you select files for rendering?”
Because Vegas can’t read your mind. You might want your audio to be AC-2 or you might want it to be PCM. Both are valid formats. It doesn’t know what you want to do with your video. If you use Movie Studio it will hand-hold you and make all of the files for you but Vegas Pro assumes you know what you’re doing and allows you to make the files yourself.
You can purchase ad add-on like VASST Render Assistant for $9.95 USD that will allow you to set up a preset to render in as many formats as you want with one click of a button (so that will make both files for you). You might want to look into that. In the interest of full disclosure, I’m the developer of Render Assistant. 😉
~jr
http://www.johnrofrano.com
http://www.vasst.com -
I rendered out a file twice in Vegas using both the 2 Blu-ray templates for 10 Mbps & 16 Mbps. I had always been told that file size was directly proportional to the bit rate yet the 2 files at virtually the same size. Why would this be so?
The only profile options listed with the = sign as matching my input are those but I see that I could have outputted it using the 24P profile as well & since this is what its ultimately going to end up should I be using this profile for use in DVDA?
Thanks in advance
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[Paul Gregory] “I rendered out a file twice in Vegas using both the 2 Blu-ray templates for 10 Mbps & 16 Mbps. I had always been told that file size was directly proportional to the bit rate yet the 2 files at virtually the same size. Why would this be so? “
I’m not sure why you’re not seeing a difference in size. I just rendered 10 seconds of both 16Mbps and 10Mpbs Sony AVC and the 16Mbps file was 20MB while the 10Mbps file was 12MB. So I’m seeing a difference equal to the difference in bit rate (about 40%).
[Paul Gregory] “The only profile options listed with the = sign as matching my input are those but I see that I could have outputted it using the 24P profile as well & since this is what its ultimately going to end up should I be using this profile for use in DVDA?”
Why would you use 24p? Did you shoot it in 24p with your camera? I would use the same frame rate as your camera.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
{Why would you use 24p? Did you shoot it in 24p with your camera?}
I just assumed that because the final Blu-ray disk would be progressive the there should be less work left for DVDA to do.
Thanks in advance
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[Paul Gregory] “I just assumed that because the final Blu-ray disk would be progressive the there should be less work left for DVDA to do.”
The final Blu-ray will not be progressive. It will be whatever format you give it within the formats that it supports. Blu-ray currently supports 60i, 50i, and 24p so if you shot 60i (i.e., 29.97fps interlaced) I would give it 60i. Reducing your frame rate to 24p may have undesirable results.
~jr
http://www.johnrofrano.com
http://www.vasst.com
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