Op donderdag 14-10-2010 om 18:13 uur [tijdzone +0200], schreef Eli Billauer: > Odin Omdal Hørthe wrote: > > > Ooohh. You don't want to change the framerate. Really. That's a hard > > problem to tackle, and it's better to just not tackle it. Just use the > > framerate you're given at all times. > > > Agreed. Changing the framerate is asking the computer to guess what > happened between subsequent still shots. I suppose there are programs > that give reasonable results (does anyone know about such?), but unless > you have a clever algorithm, it boils down to either averaging in time > or accepting the jumps. Or just play the frames slower or faster as > necessary.
The wierd thing is that the camera has a 50Hz mode, but it seems that this only affects the flicker of lighting due to the mains voltage frequency -- the resulting video files still have 30 fps. > So I can offer a few tricks, but the bottom line is that you'll have to > pick the one that is the least horrible for you: > 1. Just override the given framerate of your footage or rendered video. > That is, play it in 25 fps even though it has another original > framerate. Works well in particular when the audio track is completely > dubbed, so you don't need to slow down audio as well, and make everyone > sound like monsters. Creates a slightly dramatic look, but does good to > most footage. > 2. Use Time Average effect to smear the video in time. Will make the > video look like jelly, but less jumpy. > 3. Reduce to 24 fps (or 23.996 fps) for which there's a known method > (reverse telecine) and force the frame rate to play at 25 fps. This 4% > difference will go unnoticed. OK, there are some interesting suggestions here, and I most certainly will look into them. > Anyhow, I would consider looking at different video converters and see > what they offer. Cinelerra is for editing. The pre- and postprocessing > is best done outside (in my opinion). You are right, of course. Cinelerra is an editing tool, not a format conversion tool. Anyway, thanks so much for your suggestions; I'll report back if I get any useful results. Best regards, Richard Rasker _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
