20 hour render time for 1 min video. What the???

H

Homunculus

Carbonite Member
Hi. I attempted to shoot a "timelapse" video on my GH1. I set it on 1/4s shutter which effectively becomes 4 FPS and took a 10 minute long video.
I then imported that into Premiere and did a 600% speed up of the clip so that it says it's only a bit over 1 minute long. I then exported it to render and it's been rendering for 3 hours and still has 17 hours remaining. What the hell???? Why?
 
Make sure frame blend is off. If it's on, it will try to read all the frames inbetween and blend them together, causing the render to take a long time.

It also makes your footage look like crap IMO. Frame blend should almost never be used.
 
Demistate said:
Make sure frame blend is off. If it's on, it will try to read all the frames inbetween and blend them together, causing the render to take a long time.

It also makes your footage look like crap IMO. Frame blend should almost never be used.
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thanks a lot mate I will try that. but can you tell me where the option to turn this frame blend thing off is? I have never seen that option to my knowledge
 
clip=>video options=>uncheck frame blend

What are your system specs?

Even with frame blending on it shouldn't take that long

Do a virus scan and check if other unwanted processes are running simultaneously
 
If you don't need the full resolution of each photo, you can do a batch resize using Bridge/Photoshop. I usually resize mine to a little larger than the sequence settings I need it in just in case I want to do any pan and scan. Don't need much extra though. I think my width usually gets set to 2500 for a 1080p sequence. That will dramatically cut down on the amount of pixels that need to be processed.
 
thanks ya'll. it's a powerful computer amd phenom II 3.2ghz quadcore overclocked to like 3.5ghz with 8gb ram windows 7 so it definitely should not be taking anywhere near that long. I'll try your suggestions
 
AwakenedFilms said:
BTW - ever consider getting an intervalometer so that you don't have to record / throw out redundant frames?


Jason
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I dunno. How much do they cost? I did not really consider it but I suppose I would. It's just I'm not that big on timelapse this is my first attempt I just wanted to try it really. But can you explain the redundant frames thing a bit more as I don't really understand it...What is the difference between what an intervalometer does and what the gh1 at 1/2 shutter does?
 
hey guys I did the frame blending OFF. and at first it seemed to be rendering much faster, but it still continues to go up towards 7 and 8 hours and keeps going up after that. I stopped it but there's a possibility it might keep going. Any idea what could be causing this?
 
I sometimes get caught by this. The work bar of your sequence might be covering ALL the clips in the time line. Place it only over the parts you want to render or export.

Another problem (but somewhat related) is Adobe Media Encoder sometimes renders the whole sequence, even with the adjusted work-bar. Keep your eye on this .
 
yep I did. the work bar is specifically over just the sequence i'm trying to render not to mention that sequence is the only one in the whole timeline. there's nothing else in the timeline other than a 1 and a half minute long sequence yet it's still going up to insane hours of rendering
 
Homunculus said:
I dunno. How much do they cost? I did not really consider it but I suppose I would. It's just I'm not that big on timelapse this is my first attempt I just wanted to try it really. But can you explain the redundant frames thing a bit more as I don't really understand it...What is the difference between what an intervalometer does and what the gh1 at 1/2 shutter does?
Click to expand...

An intervalometer will record one frame every "x" seconds for "y" number of frames. It makes life a lot easier to do the math ahead of time and shoot a timelapse that is 8-15 seconds long and runs at the right speed. I use quicktime 7 to stitch the photos together (takes about 6 minutes depending on the resolution and compression used on export). I am not familiar with the GH1 1/2 shutter mode, but if it were me, I would be shooting timelapses in DSLR mode, not video mode. SHutter would be at least 1 second, maybe longer if shooting at night. I would shoot 300-900 frames and stitch them together at 24p in native resolution of 3k x 2k. Then zoom in FCP for crop/effect.

As for the cost, you will want to do some research to find out what is compatible/best for your camera setup and needs.


Jason
 
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