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Average render time for a 15-minute 720p, 29.970 fps MP4 file (rendered from a 1080i, 60 fps MP4 source file)?

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Raymond Pace
Average render time for a 15-minute 720p, 29.970 fps MP4 file (rendered from a 1080i, 60 fps MP4 source file)?
on Feb 8, 2015 at 12:41:48 pm

As I type this, I'm rendering the video I referenced in the title of this thread. It's been rendering for 1 hour and 18 minutes, and it's 63% done with approximately 43 minutes of render time remaining.

Is this normal considering all the information I provided? Is there any other information that would help to answer this question? And lastly, is there any way I can expediate this process?

Thanks very much.


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John Rofrano
Re: Average render time for a 15-minute 720p, 29.970 fps MP4 file (rendered from a 1080i, 60 fps MP4 source file)?
on Feb 8, 2015 at 1:44:07 pm

[Raymond Pace] "Is this normal considering all the information I provided? Is there any other information that would help to answer this question? And lastly, is there any way I can expediate this process?"
There is no "normal" because there are too many variables to consider starting with how powerful your computer is. GPU/CPU? Since your computer specs and not in your profile we have no idea if this is normal for your computer.

Judging by the fact that you are going from 60 fps to 30 fps, unless you disabled resample, Vegas Pro is blending each and every frame to try and estimate what 30 fps should look like. This takes a lot of time. Disabling resample could speed this up considerably.

Also the amount of FX applied and which FX can lengthen render times. So will using Best quality or Two-Pass or 32-bit Pixel mode. So lot's of things can contribute to a long render.

You'd need to give us a lot more information about your computer settings, your project settings, your render settings, etc. for anyone to give a more accurate interpretation of what might be going on. Screen shots of your project and render settings are best.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Raymond Pace
Re: Average render time for a 15-minute 720p, 29.970 fps MP4 file (rendered from a 1080i, 60 fps MP4 source file)?
on Feb 8, 2015 at 2:13:30 pm

I figured there were factors that I overlooked. My bad. Okay, let's see...

-No effects, transitions, or anything of the sort. The footage was simply cut down (removing footage I didn't need from the source file) and rendered.

-GPU:


-CPU:


-"Render As" screen:


-"Rendering" screen (only the tracks shown are present in the project-- there are no additional tracks that are out of frame):


-Did not disable resample; will remember next time. Much thanks for that piece of advice.

If there's anything else, just let me know. Thanks again.


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John Rofrano
Re: Average render time for a 15-minute 720p, 29.970 fps MP4 file (rendered from a 1080i, 60 fps MP4 source file)?
on Feb 8, 2015 at 2:40:02 pm

I believe your problem is your Core 2 Duo processor and the fact that you're rendering AVC/H.264 video which requires a Core i5 minimum (Core i7 Quad recommended). That processor was never meant to handle this workload and is woefully inadequate which is why it's so slow.

I noticed your preview is set to Best. Are you rendering using Best mode? If you are, you can cut that back to Good and probably render in half the time.

Also are you using 8-bit or 32-bit pixel mode in your project settings? You didn't show a screenshot of your project properties so I don't know. 32-bit will increase render times.

Why are you recording game play at 60 fps? Why not record at 30 fps if that's whet you're going to deliver? That will save you a lot of time too.

So there are probably things you can do to get the time down but your CPU is the primary bottleneck.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Raymond Pace
Re: Average render time for a 15-minute 720p, 29.970 fps MP4 file (rendered from a 1080i, 60 fps MP4 source file)?
on Feb 8, 2015 at 2:47:00 pm

[John Rofrano] "I believe your problem is your Core 2 Duo processor and the fact that you're rendering AVC/H.264 video which requires a Core i5 minimum (Core i7 Quad recommended)."
Is there a render setting you'd suggest instead?

[John Rofrano] "are you using 8-bit or 32-bit pixel mode in your project settings?"
It's set to 8-bit, but there are two 32-bit settings-- "video levels" and "full range." Which should I select?

[John Rofrano] "I noticed your preview is set to Best. Are you rendering using Best mode?"
I actually preview in "Preview" mode. It automatically changes to "Best" when rendering.

[John Rofrano] "Why are you recording game play at 60 fps?"
I use a Hauppauge HD PVR, and I think (not positive) it only gives you the option to record in 1080i 60 fps for HD footage. I'll double check the next time I hook it up.


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John Rofrano
Re: Average render time for a 15-minute 720p, 29.970 fps MP4 file (rendered from a 1080i, 60 fps MP4 source file)?
on Feb 8, 2015 at 11:34:23 pm

[Raymond Pace] "Is there a render setting you'd suggest instead?"
No, not really. That's the problem. The web is all about AVC/H.264 video and older computers just can't handle it.
[Raymond Pace] "It's set to 8-bit, but there are two 32-bit settings-- "video levels" and "full range." Which should I select?"
Keep it at 8-bit. That's the best setting for your media and it will render faster than 32-bit.
[Raymond Pace] "I actually preview in "Preview" mode. It automatically changes to "Best" when rendering."
You should change this in your project properties. Set your rendering format to Good and your render times should be cut in half.
[Raymond Pace] "I use a Hauppauge HD PVR, and I think (not positive) it only gives you the option to record in 1080i 60 fps for HD footage. I'll double check the next time I hook it up."
I have an older Hauppauge HD PVR and it records 29.97 fps. I know they changed some things on the newer ones but see if yours will too.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Raymond Pace
Re: Average render time for a 15-minute 720p, 29.970 fps MP4 file (rendered from a 1080i, 60 fps MP4 source file)?
on Feb 9, 2015 at 2:34:52 am

I gotcha. Thanks so much for the advice-- it's very much appreciated.


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John Rofrano
Re: Average render time for a 15-minute 720p, 29.970 fps MP4 file (rendered from a 1080i, 60 fps MP4 source file)?
on Feb 9, 2015 at 1:18:50 pm

You're welcome. Let us know if anything I suggested works so that other who have the same problem can benefit. Good luck!

~jr

http://www.johnrofrano.com
http://www.vasst.com



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