Re-rendered project grows in size to 25GB!

Lijan wrote on 7/8/2013, 2:05 PM
I had rendered a project in two parts in order to burn on onto two DVDs (was just over 2 hrs long) to give to friends. I also burned the whole project onto one Bluray disc as well.
Afterwards, I decided to edit that project a bit more. I then rendered it again, but this rendering process took REALLY long (over 4 hrs to render!). I thought this was odd, since the first time I rendered it, it took about 2 hrs. Then, I attempted to burn this re-edited/re-rendered project on a bluray, but now it shows the project to be 25.5 GB and will not fit onto one bluray disc now!!! DId I do something in the "re-rendering" process to expand these files? The file saved in the VMS Projects folder shows it's still only about 750kb, so should take up only about 1/3 of the bluray disc, as my originaly rendered project did.
I can't figure this one out!

Comments

Chienworks wrote on 7/8/2013, 2:31 PM
It's all about the bitrate. What bitrate did you use for the first render, and what bitrate for the second one?

The output file size is determined by the length of the material multiplied by the bitrate used.
Lijan wrote on 7/8/2013, 2:45 PM
I didn't change anything (oher than edit a couple frames in the project) before I re-rendered the edited project. Does it change the bitrate automatically upon re-rendering?
I'll check the bitrate on the project when I get to my computer this evening. I'll post again as well.
videoITguy wrote on 7/8/2013, 3:29 PM
Are you working the workflow properly - edit and render in your NLE and author in your DVD app? You don't seem to indicate you are doing that ? Give us your workflow please - and are you writing Blu-ray to Blu-ray Media or DVD to DVD media?
musicvid10 wrote on 7/8/2013, 3:34 PM
no doubt you rendered uncompressed AVI.
To burn a DVD, choose an MPEG-2 template for DVD Architect.
Lijan wrote on 7/8/2013, 10:53 PM
By describing the workflow is this what you mean?....
I rendered in VMS; chose "make a movie", Burn it to bluray; and sent it directly to DVDA. I did this for both the original and the re-edited/re-rendered versions.
Somehow, this thing grew in size during or before re-rendering. Like I said, it took more than double the amount of time to render the second version.
Once in DVDA, the second version of the project showed that it was 25.5 GB.
I don't understand why, because I changed nothing in the workflow.
musicvid10 wrote on 7/9/2013, 9:12 AM
Download MediaInfo from Sourceforge and post the complete file properties for the first and second renders.

If you don't know what you did differently, that is the only way we'll be able to tell.
Lijan wrote on 7/9/2013, 3:09 PM
I already deleted the first render because I thought it may have somehow affected the second one. I also deleted the second render because it took up too much space. So, I'll render again using the "render as" with the setting suggested.

I'm hoping that this doesn't take 4 hours to render, like it did the last time!

I do already have Mediainfo, and will post the file properties info after I render this the third time.
thanks for being patient with me!
Lijan wrote on 7/12/2013, 6:04 PM
okay, I rendered it again the same way, except I re-named the project. (used Make a Movie, etc). But that didn't make any difference, it's still 25.5 GB after rendering.
Here is the Movie file's media info data:

General
Complete name : E:\Users\Linda\Documents\Vegas Movie Studio HD Platinum 10.0 Projects\BD Burn Images\Sailing the Grenadines 2012b.m2v
Format : MPEG Video
Format version : Version 2
File size : 21.9 GiB
Duration : 2h 5mn
Overall bit rate mode : Variable
Overall bit rate : 25.0 Mbps

Video
Format : MPEG Video
Format version : Version 2
Format profile : Main@High
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=15
Duration : 2h 5mn
Bit rate mode : Variable
Bit rate : 25.0 Mbps
Maximum bit rate : 30.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.402
Time code of first frame : 00:00:00:00
Stream size : 21.9 GiB (100%)
musicvid10 wrote on 7/12/2013, 8:16 PM
"

You rendered your video to HD (BluRay?) resolution and bitrates (1080p, 25Mbps).
That is bigtime overkill for DVD. Typical average bitrates are 4 to 8 Mbps. NTSC resolution is 720x480.

Use the MPEG-2 DVD Architect video templates and Dolby AC3 audio templates to render compliant files for DVD Architect. This advice gets repeated over and over on these forums.
Lijan wrote on 7/14/2013, 9:40 AM
I want to burn to bluray, as I did successfully for the first version of this project. I only encountered this expanded file size when I RE-rendered this same project.
Again, I'm trying to burn to Bluray, NOT DVD.

I just used "make a movie" for both of those. But somehow the Re-rendered one got expanded in size and took almost twice as long to render - using the exact same settings.
Jillian wrote on 7/14/2013, 11:01 AM
I have only used the Make A Movie feature once and it produced a file that DVDA could not use, so I don't really have experience, but it looks like you rendered using the 16Mbps preset the first time, and the 25Mbps preset the second time.

My experience is that 16Mbps is much more than adequate to make a beautiful BluRay disc. My experience is that it is also much better to render your project using Render as, then bringing the resulting video and audio files into DVDA, than to use the Make A Movie feature.

But, as I noted, my one try using Make A Movie (back in VMS11 days) was a disaster.

Hope this helps.
musicvid10 wrote on 7/14/2013, 11:25 AM
Sorry, I misread.
Jillian correctly points out that there are different bitrates available for BluRay.
I don't know what "Make Movie" defaults to, but you may have actually used MPEG-2 8 Mbps or AVC 16 Mbps for your first render, and MPEG-2 25 Mbps for your second.

I generally suggest you use "Render As" rather than "Make Movie," where you have a wider variety of templates and settings available.