View Full Version : Interlace artifacts
2007 December 4th, 17:10
Ok, I have shot a 1080i60 movie, imported in FCP 6.02, no 24p workflow. I exported to HDV 1080i and Pro Res 1440x1080 and I'm getting interlacing artifacts during movement. I don't see those artifacts at Canon's sample movies. My goal is to produce a full HD resolution movie that will play on my computer. I also tried H.264 export from FCP (with Quicktime) and I got the same exact result. I am attaching a picture. What am I doing wrong during export? When played back on the TV directly from the camera, I don't see this artifact. I don't see it in FCP at 100% of the imported clip either
2007 December 4th, 17:36
This is normal since you have not deinterlaced you interlaced footage, remember you shot 1080i.
Now you say your goal is to watch it on a computer. So you can either deinterlace with FCPs own deinterlacer or a better deinterlacer plug-in if you have that (all this before exporting) or you can use JES deinterlacer on the exported Prores file you have.
2007 December 4th, 17:40
You need to de-interlace. I am sure there is such an option on the exporting dialogs of FCP. Although you must not export as "HDV" because that format is inherently interlaced. Export in .mp4 h.264 1080p. The de-interlacing option should be around there.
2007 December 4th, 19:09
OK, great advice. That did it. It's actually a filter I have to apply and render. It was not on the dialogs. I am wondering if this screws up the quality. I'll have to go read up on de-interlacing. Maybe I should be shooting progressive.
Thanks for the advice.
2007 December 4th, 19:27
In Final Cut, you can either apply the deinterlace filter on each clip or you can simply go to the Export->Using QuickTime Compression and select Deinterlace option under "Size".
2007 December 5th, 10:24
You might want to try 24p. With 60i, it has to stitch together two frames (or is it fields?) from different moments in time, which doesn't work that well if there is much motion, like bowing a violin.
Here's a workfow for 24p from Apple:
If you really want the full resolution of the HV20 and best possible results, try 24p out of the HDMI captured 'live'. That is where this camera really shines.
See some info about that in this thead:
2007 December 5th, 12:20
Great! That's what I'll try in the next recording. For now, de-interlacing worked acceptably. Thanks to all for your responses.
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