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Wierd render problem
I have a 12 minute video I put together in V7. It has about 6 video tracks and 3 audio tracks (I say about because I am not at that computer at the moment) The video all has significant color correction as well as some speed changes. No fancy transitions, mostly cuts and fades. The audio has been tweaked a fair amount also. It took about 3 1/2 hours to render this 12 minute project (2.4 dual core 2 G)into DVD compliant MPEG2. Used Main concept but adjusted some parameters. Thought I might try and get a little better render so I rendered VBR (2pass) at 8-7-6 Best. (I know – I could have used CBR and Good is probably just as viewable as Best, but I wanted to try it.)
Heres the wierd part. I have never had a problem with Vegas renders before (maybe its just my time?) but when I played the Mpeg in WMP it played with about a dozen horizontal lines in the picture and I believe only the video played (no audio). I would expect that since I rendered the audio separately as AC3. I have had some previious problems with WMP so I tried to play it in Media PLayer Classic (which has been rock solid for me). The video video played at like triple speed and the audio played at the same time but at normal speed.!!! Any ideas from anyone?
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6 Replies
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I haven’t experienced this in years, but in previous versions of Vegas, I occasionally saw this, and it seemed like some setting was stuck or something wasn’t connecting. I used to close down Vegas and restart, and the problem would go away. Have you tried this yes? Render out a short segment?
Douglas Spotted Eagle
VASSTCertified Sony Vegas Trainer
Aerial Camera/Instructor -
Thanks for the come back Spot.
I’ll give that a try when I get home tonight.
I’ll try and post any progress – or lack there of. -
OK, I rebooted my computer, brought up the veg file and rendered it again. Same problem. It would not play correctly in any video player. I tried changing some parameters. Good instead of best. 8-6-4 instead of 8-7-6. It reduced the rendering time by an hour but still had the same problem. Would not play correctly.
Decided I would see what happened if I dropped it into DVDA anyway. When I previewed the disc IT PLAYED BACK PERFECTLY. I guess I’m going to take a chance and put my DVD together and burn it abnd see what happens.
Never had this problem before and have made no changes to my computer (not connected to internet). Can’t figure out what the h… is going on.
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I just rendered a 10 min 30 sec video of a single video channel with the track expanded, no graphics, no effects and it took 4hrs & 18 min in vers.7 It is dual Athlon 64’s X 2 and 2 gigs of ram. The processor showed 100% activity throughout the render. I have never had this problem before and I haven’t had time to do it again etc. But I did find the similarity to be interesting.
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My comments were not directed at the time that it took to render. It was that the rendered file would not play correctly. Played with horizontal lines in WMP and played in fast forward with normal speed sound in Media PLayer Classic. Played fast forward with no sound in ZPlayer. And yet it would preview normally in Vegas. I’m just wondering if I have a problem with Vegas or with all my media players.
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I also have the same problem with Vegas 7.0e (Build 216).
It looks like a memory issue. I solved it by muting tracks and rendering them in groups.The project has 20 video and 6 audio channels. The render progress always gets stuck at a constant point. I realised that the frame it gets stuck is the timecode where events with track composition mode set to 3D Alpha channel gets heavy.
I checked the memory Vegas uses while the project is loaded. It was around 200MB. (%20 of physical mem.) The 14 of 20 tracks were set to 3D Alpha mode. To test it, I tried reducing the channels by muting 1 by 1 and it started normal rendering after muting half of the 3d Alpha channels.
I suggest you try muting channels one by one and find the event that makes render process to get stuck. When you pin it down, render it as solo and load the final output in your project to reduce CPU and memory usage.
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