Simple transition causes massive render times... why?

[gmlewis]

Hi!

I imported a 26-second MP3 into 'Audio 1' along with a 26-second AVI into 'Video 1' that I created in After Effects. MP3 is stereo 48KHz, 16-bit, 320Kbps.

Then, at 00:00:24:01, I inserted a 51-minute AVI captured from my MiniDV camcorder into Audio/Video-2. Both AVI's are using the Canopus DV Codec, 30fps drop-frame.

At 00:00:24:01, I start fading in A/V-2 with a simple 0%-100% transition using the red markers until 00:00:26:01. Very simple. Nothing complicated.

Then I select 'Create Movie'. I set the output codec to be the Canopus DV codec, 30fps drop-frame. I set the audio to 48KHz, 16-bit.

Correct me if I'm wrong, but except for frames from 24:01 to 25:29, there should be absolutely no rendering required, and it should copy the input to the output.

However, on my dual-proc 933MHz Pentium III Xeon system, it is estimating 5-hours to render this puppy out!!! It should only take the time of a file copy, like 10 minutes or so!!!

Any ideas on what I'm doing wrong to cause such a huge render time?

Thanks!
-- Glenn Lewis

 

[tallbloke]

I'm fairly new to this, but I've found Premiers estimations to be pretty far out.

I guess this is because Premier reads the first bit of you project (the complex bit) and assumes the rest of the project is the same. I guess once it has finished with frames 24:01 - 25:29 it will suddenly change it's mind and your render estimate time will drop significantly.

Start rendering and find out

Hope that helped a bit

Tallbloke

 

[gmlewis]

Thanks for the info, Tallbloke!
I still seemed pretty slow to me, but maybe I need
to perform a render with absolutely no reformatting
or any computation involved... in other words, a
direct copy, and see if that takes a long time
to "render".
-- Glenn