Rendering Takes Forever Vegas 8

Foxwiz wrote on 11/1/2007, 5:18 PM
I have a pretty new PC purchased at the beginning of 2007. It's a dual core Pentium 2.4 gHz, I have 4GB RAM, 3 SATA drives on an nVidia 680 sli motherboard. Pretty nice setup. I downloaded some video into Vegas, and the timeline shows 1 hour 30 minutes approx.
The video is from a Sony HDR-SR8 HD videocam and it was recorded in HD.

I started to render to WMV 640x480 mode. The rendering will take about 5 hours 10 minutes. WOW. Why so long to render to wmv mode?

Seems like I'm on a 486 PC! What gives!

Comments

rmack350 wrote on 11/1/2007, 5:38 PM
Hmm. Don't know but it seems that you've got a 3.4/1 render time ratio, you're using an AVCHD format, which is probably CPU intensive to work with, you're converting it from a wide screen mode to a 4:3 frame (albeit a smaller frame), and you're reencoding to WMV.

I don't know if your times are high or low but you've probably got a lot more going on there than you think. I'm not terribly surprised.

Rob Mack
vicmilt wrote on 11/1/2007, 5:48 PM
FWIW -
I'm running a Quad Q6600 with 2gig RAM and a SATA Raid 0 drive setup.

It takes me two times the timeline to render from HDV (m2t plus Cineform 1080i) to DV widescreen. So an hour of timeline takes about two hours to render.
I've tried to pre-render the whole timeline to 1080i but that did not affect the final render time, so I've given that up.

HDV pushes around 4 times the amount of pixels as DV - that's why it looks so good - but that takes time, until they come up with faster processors or parallel renderings.

v
Foxwiz wrote on 11/1/2007, 5:48 PM
Wow, that's amazing. What do people do when they render an hour or two? Is it an over night thing for most people?

Would the rendering time be difrerent if the output was in wide screen mode?

Thanks for the quick reply,,

Gary
Foxwiz wrote on 11/1/2007, 5:51 PM
If you are rendering to DV widescreen with the original video in HD, isn't that better resolution output than WMV mode?

Why would it take you twice as long and me 4 times as long if we both start with HDV?

Thanks,

Gary
xberk wrote on 11/1/2007, 6:14 PM
>>What do people do when they render an hour or two?<<

I do my Zen meditation. Time stands still....and I don't even mind......uh huh.


Paul B .. PCI Express Video Card: EVGA VCX 10G-P5-3885-KL GeForce RTX 3080 XC3 ULTRA ,,  Intel Core i9-11900K Desktop Processor ,,  MSI Z590-A PRO Desktop Motherboard LGA-1200 ,, 64GB (2X32GB) XPG GAMMIX D45 DDR4 3200MHz 288-Pin SDRAM PC4-25600 Memory .. Seasonic Power Supply SSR-1000FX Focus Plus 1000W ,, Arctic Liquid Freezer II – 360MM .. Fractal Design case ,, Samsung Solid State Drive MZ-V8P1T0B/AM 980 PRO 1TB PCI Express 4 NVMe M.2 ,, Wundiws 10 .. Vegas Pro 19 Edit

busterkeaton wrote on 11/1/2007, 6:25 PM
Changing the shape of the frame is a heavy computing task.

also what else did you do with the video? Titles, effects, color correction?
Have you ever worked in HD before.



If you want to see if anything is wrong with your system look up rendertest on thisboard. You can run the test and see how long it takes, then compare that to simliar computers
Foxwiz wrote on 11/1/2007, 6:34 PM
Changing the shape of the frame is a heavy computing task.

also what else did you do with the video? Titles, effects, color correction?
Have you ever worked in HD before.



If you want to see if anything is wrong with your system look up rendertest on thisboard. You can run the test and see how long it takes, then compare that to simliar computers

---------------------------------------------

The only other thing I did with the video was a 10 second title at the beginning. It scrolls.

This is the first time I've worked with HD before. I just got the camera about a month ago and played around with small test files, but now I have a video that is 1 1/2 hours.

I will look up rendertest and see what's up.

Thanks,

Gary
rmack350 wrote on 11/1/2007, 6:47 PM
It's my understanding that AVCHD is even more compute intensive than HDV.

Could be just an old wive's tale, though.

Rob
Serena wrote on 11/1/2007, 7:46 PM
Very likely you would have had quite a quick render if you had done little to the clips and had opted for "smart render" to HD format. However if you've done CC and other FX and opted for a different output format, your 4:1 ratio is about what I'd expect; I'd think it quite good, actually. Any long render I run over night.
Foxwiz wrote on 11/1/2007, 8:42 PM
I'll look up smart render and see what I can find, but what is CC and FX? What other output format should I have gone for with WMA?

I'm pretty new at this stuff and was blown away by the rendering times.

Thanks for any help.

Gary
Chienworks wrote on 11/1/2007, 8:47 PM
CC = Color Correction
FX = Effects
TGS wrote on 11/1/2007, 9:09 PM
Just 2 years ago it took me 8 hours to render a a 42 minute captured TV program with only contrast and CC added and this was standard video (on a P4, 2.4 single, but I would use 2 pass VBR encoding). You ought to read some of the posts (search), about Magic Bullet and Blurs. For some people, days would go by.
DJPadre wrote on 11/1/2007, 9:15 PM
firstly, youre rendering to WMV... that in itself is intense... add resizing the frame size and yeas, it will def take ages..

what i do is create an edit, then prereder the final chunks and add video tracks with those newly rendered layers, THEN render out to whatever format i need.
I have to admit though, that Vegas MPG2 rendering is slow as hell compared to the mainconcept MPG encoder, so i use that instead which gives me 3x realtime mpg encoding on a single core 3.0ghz extremem with 2mb cache with 1gb ram
FrigidNDEditing wrote on 11/1/2007, 9:27 PM
AVCHD is EXTREMELY slow rendering, and my guess is that's what you're working with. So, just give it the time to crunch all those numbers but I'm pretty sure you'd see some improvement from not changing the shape of the video.

Dave