Rendering to Mainconcept MP4 causes Vegas to hang

VanLazarus wrote on 1/26/2010, 5:36 PM

I have a video file that I'm trying to rerender from Cineform AVI to Mainconcept MP4 for posting on Vimeo.

The problem is that most of the time (not always), once the render reaches 100%, Vegas just stands there waiting for something and never writes the completed video file. The 'open' and 'open folder' buttons never degrey and the elapsed time keeps on growing, eventhough it says 100% complete!

Has anyone experienced this problem and know a solution?

Comments

TGS wrote on 1/26/2010, 6:11 PM

Sometimes, rendering from an external drive, can cause this. I don't know exactly what happens, but for me, a red light will turn on, on my external (the only way I know), and it needs to be shut down and restarted. I think some types of video are harder to process from an external drive. It may be the type of video you're taking from that external. Some HD mpeg and uncompressed can be tough. Don't know exactly what happens, but my external looks like it's still working, except for the bright red light and then it needs to be shut down and re-started and then I have to re-start rendering from scratch.
Also, although rare, sometimes you hit 100%, but it's not really at 100%. I would at least wait 10 minutes or so, before canceling.
I'm also sure I've read plenty of other reasons for this to happen too. Memory running out. I'm sure more responses will come.

VanLazarus wrote on 1/31/2010, 8:46 PM

Unfortunately, I'm not rendering to or from an external drive. It seems to happen at random when rendering MP4s. Just happened to me again. A full render reached 100% after less than 1 minute and now I've been waiting over 5 minutes for the render to 'complete'.

musicvid10 wrote on 2/1/2010, 9:50 AM

What sizes are you rendering to? I've occasionally had this happen when rendering to odd video sizes.

DVX wrote on 2/1/2010, 10:17 AM

I have found many problems with V9.0c rendering to HD including Mainconcept MP4. One of which is the run length of the program, if this exceeds 30 mins an exception is generated, could this be your problem?

srode wrote on 2/2/2010, 6:46 PM

what version of Vegas are you using? I havne't had any problems using Win7 64 and Vegas 9c for Vimeo 1280

VanLazarus wrote on 2/5/2010, 8:22 PM

I'm using Vegas 9.0c x64 on Windows 7 x64.

I'm rendering a project consisting of 1920x1080 29.97p Cineform AVI clips into a 960x540 29.97p MP4 file.

I've also had it hang on projects that are 640x480 30p Cineform AVI clips being converted into 640x480 30p MP4s.

My projects are of varying lengths from 20 seconds to 6 hours.

I've had Vegas hang on all of these projects when rendering to an MP4.

musicvid10 wrote on 2/5/2010, 8:30 PM

I'm rendering a project consisting of 1920x1080 29.97p Cineform AVI clips into a 960x540 29.97p MP4 file.

540 is not evenly divisible by 16, which is the default macroblock size in h264. Try 480 or 640 height instead, keeping your aspect consistent.

Just guessing, I have not tested this.

VanLazarus wrote on 2/6/2010, 12:59 AM

Good to know. I did not realize that h264 needed resolutions divisible by 16. I'll give it a shot and see if I still get Vegas hanging.... although this hanging doesn't happen every time with 960x540.

VanLazarus wrote on 2/6/2010, 1:05 AM

Just recreated the problem with a 1280x720 project to 1280x720 MP4. I don't think target resolution is the source of the problem.

musicvid10 wrote on 2/6/2010, 6:12 AM

OK, sorry to have put you through it, but now that's ruled out. I had the "divide by 16" problem on some other formats, .mov being one of them.

(It's still a good idea to keep multiples of 16 because of the way h264 handles "missing" pixels).

Can you upload a tiny clip of your Cineform somewhere, I'll gladly test it on 8.0c / Vista to see if it is a version issue.

Unfortunately, Handbrake won't open Cineform, so I can't suggest that route.

VanLazarus wrote on 2/6/2010, 6:28 PM

ARGH!!!! This is really starting to be a problem. Cannot render to MP4 most of the time. Now I'm getting hanging at 49%! Just stops there and processes forever. Filing a bug report with Sony.