On Tue, Jan 24, 2006 at 09:13:19PM +0100, Johannes Sixt wrote:
> Yes, you can have masks, you can even have eight of them per track. It works 
> quite well if you know about its quirks:
> 
> - You switch on and off a mask only for the entire track, not parts of it.
> 
> - You can have only one number of points (per mask) for the entire track. 
> I.e. 
> you can't add a point, because you need one more, and later on the track 
> remove it again.
> 
> This leads to the following workflow:
> 
> - Put each part of the video, for which you need a distinguished mask on a 
> separate track.
> 
> - Turn on "Generate Keyframes while twee(a)king". Turn on Mask keyframes 
> (View 
> menu), 
> 
> - Make heavy use of the bezier feature.
> 
> - Get used to using Ctrl and Shift keys while tweaking the mask points.
> 
> - Start at the frame where you are going to need the most mask points. work 
> forward and backward from there.
> 
> - Work with deinterlaced footage.
> 
> I've done a 10+ seconds shot where I had to tweak the mask at every single 
> frame. Since I grabbed it from DV, I used Fields-to-Frames to "deinterlace" 
> the frames, so I have actually 50/sec frames. I think I know what I'm talking 
> about as far as mask are concerned ;)
> 
> -- Hannes

That worked. I had to create around 40 tracks just to erase a moving
part of the video for 5 secs.
Being able to move masks in time, or define the end/start point of masks
would be really useful. That would avoid creating dozens of tracks.

Thanks.

Nicolas.

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