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Rendering questions

Posted: Wed, 20th Oct 2004, 12:43pm

Post 1 of 14

haklia

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Hi,

well, I have done my first little video, and this is rendering, but it's a quite long : 2 seconds / frame, that means my 1774 framed video is going to take 1 hour, is it normal ?
I'm using uncompressed avi (in render setting), do you think that DV avi should be better ? faster ?
Can anybody give me some advice about it please ?

Thanks a lot
Posted: Wed, 20th Oct 2004, 12:45pm

Post 2 of 14

Klut

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Yes, chromy aint no fast render program... Thats just how it is (doesn't matter witch file)
Posted: Wed, 20th Oct 2004, 12:48pm

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haklia

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whow, I posted it 3 minutes ago....LOL... you're fast......
thanks for this. And about the settings please ? what do you advise ? DV or uncompressed ?
Posted: Wed, 20th Oct 2004, 12:53pm

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Klut

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Uncompressed is the best way to go, but you have to compress is later to import it in pinnacle etc.
I use dv. And thats good enough.

Ps. Rendering is much faster if your video file has smaller resolution.
Posted: Wed, 20th Oct 2004, 12:57pm

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haklia

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ok, thanks a lot, I think I'll use DV.
Posted: Wed, 20th Oct 2004, 12:58pm

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Klut

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No problemo.
Posted: Wed, 20th Oct 2004, 1:09pm

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Simon K Jones

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If you switch to the 'quick render' engine it tends to render much faster, although you don't benefit from the higher quality and aa etc of the main renderer. But for some projects the 'quick render' might be sufficient.

Rendering is never a fast process unfortunately - quality is more important than speed. The speed depends on the project and your computer - adding blur tools to a project can make it take a lot longer, for example.
Posted: Wed, 20th Oct 2004, 1:24pm

Post 8 of 14

haklia

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ok, I'm trying with DV and quick render (unfortunatly, I have forgotten to link my mask....LOL... 1 hour lost)

thanks
Posted: Wed, 20th Oct 2004, 1:25pm

Post 9 of 14

Simon K Jones

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It's always a good idea to use the frame preview button at a few key points through the project before you commit to a full render. That way you can double-check that everything is as it should be, without having to wait ages only to find out you left something out. smile
Posted: Wed, 20th Oct 2004, 1:31pm

Post 10 of 14

haklia

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LOL, ok, after the rendering, I will try to find this button.

Note : I am not going to create a new thread for this question : I have seen progressive on the new project window, what does it mean, and when must I active it ?
Posted: Wed, 20th Oct 2004, 1:35pm

Post 11 of 14

Simon K Jones

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If you are using progressive, non-interlaced footage (sometimes referred to as ‘frame mode’ by video cameras) make sure this is ticked. If you are using ordinary interlaced footage, make sure that you do not select this option.

When using interlaced footage, Chromanator will automatically split each frame into its two separate fields, temporarily doubling the frame count. This enables you to work without interlacing problems. When you render your project, the fields will be automatically re-interlaced. This ensures that full broadcast quality is retained throughout.
Posted: Wed, 20th Oct 2004, 1:39pm

Post 12 of 14

haklia

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yes yes, but, if I did not touch everything on my DV camera, do you thing my videos are interlaced ? is this the common setting ? my camera is a basic one.
Posted: Wed, 20th Oct 2004, 1:59pm

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Simon K Jones

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Rating: +1

Yes, your footage will be interlaced. Only the newer or high-end consumer cameras have progressive capabilities, and you have to specifically turn them on.

The easy way to check for interlaced footage is to play it in Windows Media Player (or something similar). Look for odd horizontal banding wherever there is movement. This is due to the two fields playing at once, so they look somewhat offset (which doesn't happen on a television, due to the different way the frames are processed).

When viewed on a monitor, an interlaced frame will look something like this (taken from an old hi8 camera):



This is due to both fields being shown at once. It'll be fine if played back on a TV. This is why you deinterlace films before putting them up on the internet, as you don't want those kind of artifacts.

However, deinterlacing reduces the quality, which you obviously don't want to do while still working on the film. This is why you split the fields instead. This is temporary and enables you to do special effects work without the interlacing causing problems with positioning. So the above shot once split into its two separate fields looks something like this:



Once you're finished, Chromanator will automatically recombine the fields, meaning that the effects will play normally on a TV screen and the footage will not have lost any quality.

A progressive clip, on the other hand, is just a normal full-frame image to begin with (taken from a Canon XM2):



So nothing needs to be done to progressive footage - well, other than ticking the progressive box in the new project settings. smile
Posted: Wed, 20th Oct 2004, 2:42pm

Post 14 of 14

haklia

Force: 600 | Joined: 13th Dec 2003 | Posts: 39

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ok, thanks a lot, I now understand what it means.

So, thanks both of you to have posted fast answers.

You're a great team.

Cya for future questions...LOL

Thanks