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Help! Unusual long render time in AE CS3
Hello,
I’m having a very frustrating problem rendering out a clip in AE CS3.
The situation:
– the input clip format is .m2v (MPEG2-Bluray format), it’s about 4 minutes long
– the comp has 2 layers (one is the clip, another is some simple text)
– no other effects are applied
– no motion blur
– My PC specs: Core i7 920 CPU, 6 GB of DDR3 RAM, nvidia 9800gx2, Win Vista x64 UltimateThe problem:
– render time is almost 6 hours.. I’m rendering out to the MPEG2-Bluray preset
– even though I still get very good speed with RAM preview
– I have done similar renders before and they only took about 1-2 minutesWhat I’ve tried:
– I tried restarting AE and the PC several times… no luck
– I’ve created another empty comp, throw in some footage and render out, it doesn’t matter what format they are, AE renders at about 5-10 seconds per frame!
– I’ve tried rendering to different physical hard drives, the results are the same!
– I tried cleaning the AE cache, no luck
– Turned on and off multiprocessing, no luckI really do not have the faintest idea what caused this problem… as far as i can tell, the harddrives are fine, the hardwares are fine (I still get very smooth RAM preview), it is not because of the comp (the comp is very simple, also I’ve tried other comps with no luck). The only thing that I could think of that I haven’t tried is reinstalling AE or even Windows… it’d be very unconvenient.
Does anyone have a clue? Please help.
Thanks.
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3 Replies
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have you tried rendering to, say, Photoshop image sequence first, then importing that and rerendering to mpeg2? I find it’s better to render to image sequences with anything complex, then if it crashes or hangs you can pick up where it left off.
only other thought is – have you checked task manager > processes? sometimes you might have a process which is eating all the cpu power.
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Thank you very much for the response.
After I made that post I tried again rendering out the comp to AVI uncompressed (the resulting file was 32 GB), then I ran the AVI file through ProCoder to convert it back to MPEG2 HD format for easier viewing and save space. The whole process took about 20 mins (10 mins render and 10 mins converting) so it’s acceptable.
What baffles me is that I have done similar renders before (rendering a .m2v clip with simple text straight to a new .m2v file) and they never took that long (10 mins top for a 4-5 min clip). Maybe someone messed around with AE on my comp or made some changes that caused this. I had Nucleo Pro installed for a while and it was fine until today. I tried uninstalling it but nothing changed so I guess that’s not the problem.
Also thanks for the tip about image sequence, it’d be great to be able to resume cus rendering is never totally stable 😀
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Thank you for the answers.
I have now changed my workflow to render to uncompressed AVI in AE, then encode it back to HDV format for delivery using TMPGEnc. How is TMPGEnc encoding compared to the softwares you have mentioned?
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