deinterlaced output is not deinterlaced

Winston - Thanks for the reply. Here is some more info…

When you say the aperture setting is now checked, what is it checked to.

It is set to "Clean."

When you say "now the videos I import are all interlaced (and look terrible)." are they interlaced or just messed up (ie do they change when you check the single field or deinterlace box in QT properties.

Here is a sample that shows the settings:
http://flashfish.com/download/123321U133504_740455/qt.html

What settings do you use to import, what does your camera record in.

The video is 640x480 interlaced. As you can see, before I upgraded to 7.6 the Quicktime deinterlaced the video. However, now it is interlaced.

Any ideas?

Thanks!

Flashfish

I may have something to try but I need to be sure of a couple of things.

Is your camera 640 x 480 or is it DV(720 x 480)

What are you trying to import to is it h264.

I know that looks like interlacing but it might be artefacts on a progressive video. If you go to properties, select the video track and choose the visual settings tab and check the single field or deinterlace box, if the lines disappear then you have an interlaced video, if they don't you have a progressive video.

Can you elaborate your importing process a little more?
Is your camera DV or MPEG2 (Harddrive or memory)? What do you use to convert your video to h264?

Do you use 'de-interlace the source video' checkbox of Quicktime Pro? If so, that checkbox is currently broken in QT7.6. I wasn't able to do de-interlace any video.

Winston Churchill wrote:

Is your camera 640 x 480 or is it DV(720 x 480)

My camera is 640x480. It is an old Sony Hi8 Digital Handycam.

What are you trying to import to is it h264.

In the preferences of the Quicktime Player you can select a recording quality, which I have set to "Best (H.264)." As mentioned, with the exact same settings the image is now interlaced, where before it was not.

I know that looks like interlacing but it might be artefacts on a progressive video. If you go to properties, select the video track and choose the visual settings tab and check the single field or deinterlace box, if the lines disappear then you have an interlaced video, if they don't you have a progressive video.

I have tried this, but nothing happens.

Euisung Lee wrote:
About the lower setting damaging the interlace..........................................

Yes I think we are seeing the same things now.

Thanks for the help…

Can you elaborate your importing process a little more?
Is your camera DV or MPEG2 (Harddrive or memory)? What do you use to convert your video to h264?

The camera is a Sony Hi8 Digital Handycam, 640x480 native, interlaced. I was using the QT Player (with QT Pro) to record at H.264. Before 7.6 this worked like a charm.

Another thing I tried is importing in native DV, then exporting. In addition to taking a lot longer, it also doesn't look nearly as good as it did before.

Do you use 'de-interlace the source video' checkbox of Quicktime Pro? If so, that checkbox is currently broken in QT7.6. I wasn't able to do de-interlace any video.

This may explain the problem. Do you have any more info? Would you recommend reverting to 7.5.5?

Thanks!

Message was edited by: flashfish

Try importing it to interlaced AIC at 640 x 480.

The fact that the check boxes do nothing means your video is progressive, quicktime has converted it from interlaced to progressive but it hasn't deinterlaced it (if you understand me, although technically that may be the wrong way to explain it)

Quicktime seems to have a problem deinterlacing, so if you can import your video interlaced you can let another application like JES Deinterlaced do the deinterlacing part for you.

Winston Churchill wrote:
Try importing it to interlaced AIC at 640 x 480.

The only problem is the only options to record in the QT Player are Good, Better, Best and Device Native. Do you know of a way to change this?

Sorry, what about device native.

Winston Churchill wrote:
Sorry, what about device native.

Yes, that may be my only alternative. What bugs me is I still have 20+ tapes to import and that two-step process takes much more time than importing it correctly in the first place, like it used to do.

Would you recommend reverting to 7.5.5?

I don't know.

You say it didn't happen with 7.5.5, however I've seen other reports that the issue being discussed in this thread also occurs under 7.5.x, although I can't confirm that as none of my macs now have 7,5,x.

It looks like that Quicktime's deinterlacing ability is somehow broken in 7.6. You may have better luck by reverting back to 7.5.5.

This is what I think happened. Quicktime, upto 7.5.5, was dealing with interlaced video more proactively. If user wants to convert interlaced video, say DV, to h264 (which doesn't have interlaced mode) Quicktime automatically deinterlaced the source without asking.

This is convenient for most users, but again it's another case of Apple making choice for the user and some probably complained for the lack of choice. Quicktime 7.6 stopped deinterlacing but broke something and lost the ability to deinterlace at all and now that little checkbox doesn't work anymore.

Perhaps Quicktime can have two preferenced settings. Easy and Advanced. Easy would try to do as much as possible without asking users, and advanced would lay out all the buttons and switches for users to make the choice. Why can't we have both, Apple?

Steve,
When I export AIC via Quicktime using the settings you mention, I get the quality set at a default of medium and don't see how or where to change it. Can it be changed?

Do you not think it would be fair to say that quicktime IS able to deinterlace, but certain areas of its interface are not working properly.

I assume im09 uses QT to process its exports to its 'share movie' presets and whilst as you point out 540 could work merely because 540 is 1/2 of 1080, that isn't true for it's 360 preset which works just fine, also QT itself wont export to 540 without having a problem, then of course FCE exports using QT conversion exported to 540p and 720p work just fine as well, as do a number of third party applications which use quicktime.

It seems to me that the problem is telling QT what to do rather than its ability to do it.

Winston Churchill wrote:
It seems to me that the problem is telling QT what to do rather than its ability to do it.

I think your assessment is more correct.