Inazuma Posted June 14, 2014 Share Posted June 14, 2014 When I did the camera test a few weeks ago some people said they saw aliasing and a little moire on the bricks and weatherboards. I was surprised because I'd never seen this issue before when using this camera. So I had a look and saw what they meant. On the left is the original .MTS video from my camera when viewing with WMP or VLC. On the right is how it looks when I import it to Adobe Premiere Pro. It looks like that after rendering too. This issue is not present if I convert the MTS to ProRes first. Can anyone explain this? Quote Link to comment Share on other sites More sharing options...
AKH Posted June 14, 2014 Share Posted June 14, 2014 I'm going to hazard a guess that the MTS file is being treated as interlaced content by premiere and is deinterlacing it to put it on the timeline. Should be able to turn it off if that is the case. Quote Link to comment Share on other sites More sharing options...
Axel Posted June 14, 2014 Share Posted June 14, 2014 You didn't write what camera you shot with. Some cameras have psf modes (progressive segmented frames), for instance to get 1080 25p (european standard framerate, which subjectively looks the same as 24p - or 23,98p -, but which doesn't cause flicker with 50Hz power frequency) in order to make the video compliant with the bluray standard, which includes 1080 50i, but not 25p. Also DVDs for PAL can contain 25p "as" 50i. The Canon XHA1 shot psf, the HBR mode of the GH2 was psf (in Europe at least), these are the two I know of. Be it as it may, the psf is actually nothing else but a flag. It's progressive video, but it tells the NLE that it isn't. Afaik, you shouldn't manually tell Premiere that you shot "p". If you did, it is like AKH said: Premiere will deinterlace it and introduce those artifacts. You can however, unless you want to burn a BD, export as progressive. Quote Link to comment Share on other sites More sharing options...
Inazuma Posted June 14, 2014 Author Share Posted June 14, 2014 If it is Premiere trying to deinterlace it then how do I solve that? The footage is from the Panasonic GX7. 1080 25p. 1/50th. Quote Link to comment Share on other sites More sharing options...
AKH Posted June 14, 2014 Share Posted June 14, 2014 For Premiere 5.5 I would right click on the footage in the project window and select Modify -> Interpret Footage. Make sure framerate is set to 25fps and Field Order is set to No Fields (Progressive Scan). Hopefully that will be enough clear the problem. Inazuma and jgharding 2 Quote Link to comment Share on other sites More sharing options...
Inazuma Posted June 14, 2014 Author Share Posted June 14, 2014 That worked a treat! Thanks :) Quote Link to comment Share on other sites More sharing options...
jgharding Posted June 16, 2014 Share Posted June 16, 2014 That's the same thing you have to do with the C100 too, that's all PSf. Took me a while to work it out... Quote Link to comment Share on other sites More sharing options...
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