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Preview video is super choppy

hmethorst
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Preview video is super choppy

Fri Mar 28, 2014 5:41 pm
I can hardly use the preview to gauge my work, especially when affine or composite are in use... Any word on this?

specs:

*-cpu
product: Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz
vendor: Intel Corp.

Now I am running a hybrid intel/nvidia graphics card using bumblebee (optirun kdenlive) and have "use opengl" checked for video in the settings, but this preview situation is grim to the point of unusable...

Any help is geatly appreciated. I love this program... Thanks guys
capslock
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Re: Preview video is super choppy

Fri Mar 28, 2014 6:19 pm
Assuming you are working wit HD material: You may want to enable proxy clips in the project settings.
khsien
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Re: Preview video is super choppy

Mon Mar 31, 2014 8:20 am
The best feature of Kdenlive is the option to use proxy clips when editing.
hmethorst
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Re: Preview video is super choppy

Fri Apr 04, 2014 3:34 pm
khsien wrote:The best feature of Kdenlive is the option to use proxy clips when editing.


Even with proxy clips and a good system however, it seems to get very choppy when using certain transitions like affine and composite. Is that normal?
zabastodwa
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Re: Preview video is super choppy

Fri Apr 04, 2014 4:13 pm
preview is in low resolution, but you should not see super choppy project preview, sample with 5 paths. 4 of them have Composite transitions and Crop, Scale and Position effect in the same time: http://youtu.be/3wevBe5mySw?t=9m41s&wide Source video are 1920x1080 25fps, output 1280x720


User avatar Ubu the Tech Guru
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Re: Preview video is super choppy

Wed Apr 09, 2014 1:37 am
hmethorst wrote:
khsien wrote:The best feature of Kdenlive is the option to use proxy clips when editing.


Even with proxy clips and a good system however, it seems to get very choppy when using certain transitions like affine and composite. Is that normal?
no it should not be choppy, what type of system are you using. it sounds underpowered


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hmethorst
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Re: Preview video is super choppy

Thu Apr 10, 2014 2:43 am
Ubu the Tech Guru wrote:
hmethorst wrote:
khsien wrote:The best feature of Kdenlive is the option to use proxy clips when editing.


Even with proxy clips and a good system however, it seems to get very choppy when using certain transitions like affine and composite. Is that normal?
no it should not be choppy, what type of system are you using. it sounds underpowered



As I said earlier, its a
Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz with a hybrid graphics system. I'm running Mint 16 with bumblebee installed and using the "optirun kdenlive" command to (hopefully) use the GeForce 630M and not the Intel chip.
capslock
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Re: Preview video is super choppy

Thu Apr 10, 2014 6:55 am
What are your proxy settings?
hmethorst
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Re: Preview video is super choppy

Sun May 04, 2014 4:23 am
capslock wrote:What are your proxy settings?


I hope this is what you are looking for

Image
capslock
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Re: Preview video is super choppy

Mon May 05, 2014 6:30 am
Yes, thank you. I wanted to see if the proxy clips itself were too heavy.

In my last project I also had lots of dropped frames, when previewing a simple overlay of a title clip and one proxyfile video track. Music and picture have been very choppy, so I can confirm this issue.
hmethorst
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Re: Preview video is super choppy

Tue May 06, 2014 3:49 am
Yea... It's just that affine and composite are so critical to any project, and even using them on proxied photos causes choppiness
bazsound
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Re: Preview video is super choppy

Tue May 06, 2014 11:36 am
thought id reply to this rather than create a new topic as i have been having the same problems on and off for a while . ive not been able to work out where the issue is. if its a graphics driver issue or just some other library or wahtever.

Opengl ive only had working once a while ago using a development build, but for the past while none of the versions i have tried will playback smoothly using opengl.

I did have kdenlive working fairly well a few weeks ago and now i tried it today. using the same version and no choppy playback unresponsive gui during play back. no changes in settings helped. Not even proxy clips

Tried the svn PPA, kdenlive crashed moving the playhead and then would crash every time i tried to reopen.

Starting to get frustrated with kdenlive as im ending up spending more time just trying to get a workable configuration than actually editing videos.

Im running an old machine but it has been perfectly capable of editing videos in the past.

AMD Athlon 64 x2 2ghz
4gb 800mhz DDR2 Ram
nvidia Geforce GT610 1gb PCIx16 dual screens (previously running nvidia 6100 onboard which also ran fine)

I have opencl installed and also nvidia cuda so i dont know if this driver is causing issues but i dont see how it should. video playback works great and recognises vdpau support. Also folding @ home works and is able to use the gpu.

edit:

Ok now its working again after purging the svn ppa and going back to kx studios provided package which was not working correctly before i tried the svn....

who knows... who knows...

Also opengl seems to now not cause kdenlive to grind to a halt, hoever it seems to reduce performance slightly.
bazsound
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Re: Preview video is super choppy

Tue May 06, 2014 11:45 am
Just as a note,

ive always had issues with affine even when it was not overlaying on another playing video (title clip with no video beneath it) i found that composite while still slightly choppy was not as bad as affine.

You learn to live with a little choppyness during playback. After all processing effects on video on the fly is processor intensive. However i fould have thought a moderm cpu could handle it better than my old AMD athlon 64 which is doing an ok job considering. The I3 though as far as i knnow is still only a dual core.
hmethorst
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Re: Preview video is super choppy

Tue May 13, 2014 3:06 am
i7-3610QM CPU @ 2.30GHz

Shouldn't have processing problems for simple affine and composite effects, IMO.


Otherwise, great program.
bazsound
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Re: Preview video is super choppy

Mon May 26, 2014 8:45 am
I always have problems with affine, its super choppy. If thers no video to overlay i remove the affine. Composite runs much smoother for overlaying over a video track.

I havnt tried it on my core 2 duo 2.4ghz laptop.

But i just put it down to my old desktop machine (2ghz duol core amd 64)

 
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