On Dienstag 24 Januar 2006 20:11, Nicolas wrote: > Hello, > > I'd like to hide some part of my video. I read some information about > masks in the wiki. However, the zone I want to hide moves! > > Is that possible to modify in time a mask on the same track, or do I > have to create several tracks and define for each of that track a static > mask?
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 _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
