Steve, apologies for late reply and many thanks for the advice. I use a PAL Mini-DV camcorder. PAL framerate is 25 and I don't mess with it. I leave the picture dimensions the same as the source, too, which I think is 720x576.
I can deinterlace when exporting from Adobe Premiere Elements and the buzzy lines are gone when I open the resulting AVI in QuickTime - but the motion looks choppy to me. Final file exported from QT looks OK but as I said choppy motion. If I don't deinterlace on export from APE, the video still looks fine in Windows Media Player, but when I open it in QuickTime the interlacing problems are there. Even if I apply QT's own deinterlacing filter the problem persists. Problem persists when final file is exported from QT. Right now I'm exporting a non-deinterlaced AVI from APE and forcing the dimensions to 640x480, with square pixels. I'll see how that looks in QT ... tomorrow morning. Waz --- In videoblogging@yahoogroups.com, "Steve Watkins" <[EMAIL PROTECTED]> wrote: > > OK well when making videos for the web at 640x480, you'll always have > to deinterlace before or during encoding unless your camera can > reccord in a progressive format. If you are using a DV camera then > maybe you are lucky and have a progressive mode like 24p, also refered > to as film mode sometimes (although theres also a cheap progressive > effect on some cameras that isnt quite real so not good enough quality). > > So if you dont have such a mode, or for example use an mpeg4 recording > device (which is usually progressive, eg nokia N-series video), then > you'll only avoid interlacing issues when using resolutions that are > around half the cameras res, eg 320x240. So a lot of people never run > into this 'fun' until they start dabbling with higher resolutions. > > So anyways theres no way to avoid de-interlacing if you have a normal > interlaced DV camera and want to output 640x480. Deinterlacing can be > accomplished using quite a variety of techniques, with quite variable > results, and so different apps/encoders will often give very different > results when deinterlacing. I spent waaayy too long studing this stuff > a few years back, and I have failed to retain everything I learnt. On > the Mac I found JES Deinterlacer to be the most flexible and best > quality, but timeconsuming ( scroll down > ttp://www.xs4all.nl/~jeschot/home.html a little). On the PC Virtualdub > offers various deinterlacing options or other plugins can be used > within it to achieve nice results. Ideally youd find an encoder that > has great deinterlacing so that theres no need for intermediate > re-encodes and extra steps of hassle. > > In the end I got a HD camera so that I could avoid these issues by > using half-HD res, which still gives a more than respectable 540 > vertical resolution, even after throwing away half the info and thus > avoiding the interlace issue and the need to deinterlace. > > What framerate do you encode your stuff to? Its not impossible that > this can have some bearing on the best deinterlacing tactic to use. > > Cheers > > Steve Elbows > > --- In videoblogging@yahoogroups.com, "wazman_au" <elefantman@> wrote: > > > > Steve, > > > > Got something that is OK looking but deinterlacing is part of the > equation so there's a loss > > of quality. > > > > I had the same jagged-edge problems today when I used the camcorder > for Skype via > > Splitcam. It was fixed by setting Splitcam to deinterlace. > > > > I'm wondering whether a preset on the camera itself has been changed > inadvertently, or > > whether the Fireware/DV drivers on my computer have gone awry. > > > > All this on top of the great format quandary to make something that > works on both iPods > > and Apple TV!!!! > > > > Waz > > > > > > > > --- In videoblogging@yahoogroups.com, "Steve Watkins" <steve@> wrote: > > > > > > Did you get this sorted ok in the end? > > > > > > What resolution and codec was the AVI you exported? What resolution > > > was the MP4? Was your source footage standard DV? > > > > > > Cheers > > > > > > Steve Elbows > > > > > > --- In videoblogging@yahoogroups.com, "wazman_au" <elefantman@> wrote: > > > > > > > > Hey videoblogging yahoos, it's been a while. > > > > > > > > I'm just finishing our long-awaited latest episode and having some > > > > weird problems. > > > > > > > > When I export it as a large AVI from Premiere Elements 1.0 all looks > > > > fine, and that same AVI also looks fine in Windows Media Player. > > > > > > > > But when I open and play it in QuickTime I get that buzzy, > jagged-edge > > > > looks that suggests an interlacing problem. Same goes for the > MP4 I'm > > > > exporting from this source material. > > > > > > > > So I go back into Premiere Elements and export a deinterlaced > AVI with > > > > no fields. Still looks bad in QuickTime. > > > > > > > > Now, as I type this, I've just opened that AVI in QuickTime, > gone into > > > > movie properties -> video track and selected deinterlace, as well as > > > > "high quality". The video now plays better but I reckon there are > > > > still faint lines in it. If I only select "high quality" it maybe > > > > looks even better - can't quite tell. > > > > > > > > I'm going to go back to Premiere Elements and export a > > > > non-deinterlaced file and see what happens if I fiddle with the > > > > QuickTime settings. But this seems weird - I've never had it before, > > > > other than when I accidentally captured PAL video into an NTSC > > > > project. There have been a few codec packs on an off this computer, > > > > but I've not removed them all and reinstalled QT from scratch. > > > > > > > > Waz from Crash Test Kitchen > > > > www.crashtestkitchen.com > > > > > > > > > >
