[Benny Stracey]

Yes sorry, i guess i have made things a little confusing here in my last few posts. These videos weren’t EXACTLY the same, but they were very close. And yes i can understand that with the different scenes and images between the two comps that would make a difference in rendering times, but im pretty sure it would not cause the significant slow down in render time i have been seeing.

Thank you for your help, i have been able to fix this issue by changing the video codec, however MPEG4 seemed to give me the best quality video output to import into AE. But this is whats causing all the slow down in render times!

I am using AVS video converter 6 and i changed all my files from FLV to H.263 MOV which actually made the quality worse.

These videos are for web videos and while the quality in the very end will come out a bit less, it can still come out a lot better than these videos encoded with H.263 will.

Can you recommend a codec that will be suitable with AE and for web videos and at least the same quality as MPEG4?

Or unless i can just convert the FLV videos i have back into FLV again, the FLVs that i am getting are not reading in AE CS4 due to not having these little pieces of video information at regular intervals, if i have described that correctly 🙂

[Benny Stracey]

Just to add more information to this, I have gone back to all the default settings that AE started with and i have also set my boot file back to 2GB instead of making it read 3GB of RAM for AE.

Im still getting the same results. I tested with 2 imported raw videos files, both with the codec MPEG4 320 X 240

I tried to render out the middle part of the video (the part at which AE slowed down) it was a minute in length. AE started to render very slowly right from the beginning. This took 9 mins to complete.

Next it went to the next comp that was next in the render queue. This comp was the full 6 min raw video file which was the exact same codec and size as the previous comp. This render completed in 12 mins.

A large difference considering the length of the comp, and still remember that these two videos consisted of the same type of raw video with no extra 3d layers or anything.

Ive done some reading on this and i have read a few times on from different sources about these type of codecs: Native HDV, MPEG1, MPEG2, mp4, H.261 or H.264 not being suitable for a consistent render in AE

But im using MPEG4, so unless im mistaken and MPEG4 is the same as mp4 i cannot work out what is going on with this issue.

While typing up this post, AE if now on the final comp in the render queue that i set up, this comp is still the same type and length raw file as the others and it is not even half way finished and has taken 12 mins already!!

i dont understand….

[Benny Stracey]

No, there is something very wrong with AE.

Ive been doing some reading and tried everything.

The comps are exactly the same with the same raw video at 360×240 with only one text layer and that is it. The raw video is all imported into AE with the codec MPEG4 at 192kbps

I have watched the render take place and the first quarter of the comp goes very quickly and the estimated remaining time is around 3-5 mins, then it hits a point where every thing slows down a great deal and takes around 30 mins.

At this point in the comp there are no extra layers or complexed things going on in the raw video.

At first some comps took 10 mins then it went up to an hour, now my comps are going fast at first and then slowing down heaps.

I have the disk cache enabled with up to 3GB of storage space, AE memory usage is at 1.79GB while the RAM to leave for other programs is set at .25GB and i run AE with no other programs at the time.

I have found that when i turned on the multiprocessing that the render is slowed down from the very start.(so i have had this turned off) Prevent DLL address space fragmentation is also turned on.

Something very wrong is going on here and its very frustrating!

[Benny Stracey]

lol well im not deliberately trying to render out in HD haha

Doing a purge before each render queue sounds like a great idea 🙂

I should get a new machine soon, lol yes i know i should have at least 2GB RAM to run AE. Dont think i have a good video card, probably just a standard one.

The reason why i use MOV h.264 is because i found this to be the quickest way to render out my stuff. I make a lot of 1-4 min videos for YouTube, so rendering out a lot of video takes time. I later convert them to FLV. Because AE CS3 does a crappy FLV export, or i just don’t know how to do it properly.

But i have CS4 now and that renders out FLV nicely 🙂

For now, i hope that doing a purge for at least 20 renders will do the trick, hopefully 🙂

Thanks