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Home: Isadora: General: frame dephase problem with live video input

tease New User Jul 16, 2008, 1:58 PM Post #1 of 3 (1311 views) Shortcut frame dephase problem with live video input Can't Post Hy, when I try to import live video feed, I have a dephase problem with the interlaced frame of my Sony HDV caméra(witch convert the signal into a DV before sending it to the firewire). Is my firewire too long? (5meters)? Is the Sony converter not efficiant? But I had the same problem with a Canon DV camera... I have set the input video quality to maximum or normal, the video defaut resolution to 720x576 and 756x576 without any changement... I work on a Macbook Pro, X.5. does somebody have a solution? all the best, thomas israel ww.thomasisrael.be Thomas Israel video art - interactivity www.thomasisrael.be

Mark Coniglio TroikaTronix / Moderator Jul 25, 2008, 12:52 AM Post #2 of 3 (1218 views) Shortcut Re: [tease] frame dephase problem with live video input [In reply to] Can't Post When you say "dephase" problem do you mean "de-interlace" -- where you see artifacts because of the interlacing of the video once it is scaled up to a larger stage size. (i.e., the 720x576 becomes 1024x768.) One thing to try is to _not_ use the 720x576 setting but simply choose Input > Video Input Size > Full Size. This will ensure that the video resolution will be precisely what is being fed from the camera. But it is always a problem to scale PAL interlaced video to 1024x768. Most projectors I've ever seen don't have a resolution setting that provides 576 vertical lines, which is what you'd want if you wanted each line to get it's own "pixel" on the projector. One solution: deinterlace your video in FCP and re-export as "progressive". That might help. Best, Mark - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Mark Coniglio / TroikaTronix Creator of Isadora

tease New User Jul 26, 2008, 2:03 PM Post #3 of 3 (1194 views) Shortcut Re: [Mark Coniglio] frame dephase problem with live video input [In reply to] Can't Post thank you mark for the advice, yes I ment "deinterlace"! I'll do that for the movies, but for the live input, I'll have to find other solutions! For the moment I have found a freeframe(peter's plugin) actor called "DeInterlace" that help. all the best, thomas Thomas Israel video art - interactivity www.thomasisrael.be

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