This content has been marked as final. Show 23 replies
In the H.264 settings for the Adobe Media Encoder, choose the iPod Large preset.
Stupid aren't I really? H264, of course. Anyway, it looks great on my iTouch.
If I'm being picky, the video (although the preset looks to be right at 640 x 480) doesn't occupy the full screen (a music video from iTunes does however).
>Stupid aren't I really? H264, of course.
No, not stupid. It's easy when you know where to look. :)
The frame size of the iTouch is not 320x240 like the Classic. It's 480x320.
I don't recommend resizing your Pr video to match the iTouch's frame size unless you process it through a high-quality deinterlacer and resize it using Lanczos resizing.
Dan Isaac's HD-->SD Workflow topic in this forum lays how to use AviSynth and VirtualDub to do just that. However, it's probably overkill for iPod video.
Me? I deinterlace using VirtualDub with the SmartDeinterlacer plug-in and VirtualDub's built-in resizing to convert to 640x480 (plays nicely in iTunes) and let it go at that.
Thanks for that. You know Jeff, this whole de-interlace thing is like some mystic art to me.
Most times when I render a video, to Flash or MPEG for example, I don't bother. I think I'm right in saying (although I could easily be wrong!) that encoding to Flash does it along the way and most software MPEG players do likewise. QuickTime I'm not sure about.
So why, if you don't mind me asking, do you suggest 'using a high-quality deinterlacer' in this instance?
And is the VirtualDub Smart Deinterlacer 'high quality'?
I think I also remember that someone has recommended a Panasonic plug in for VirtualDub although I've never used it...
And one final question (since you appear to have raised more in my mind than you imagined!), why use the VirtualDub for resizing instead of Pr?
Premiere deinterlaces by throwing out one field and then duplicating the other to make a full frame. So you lose half your vertical resolution. Upside? It's really fast to do that.
High-quality deinterlacers usually take the time to examine parts of a series of frames so they can detect motion, and they use complex mathematical algorithms that only change the parts of the image where there is motion while they generate the new progressive frames. Downside? It's a slow process.
The VirtualDub/SmartDeinterlacer combo is a high-quality deinterlacer. And for a high-quality deinterlacer, it is relatively fast. There are better (but slower) deinterlacers, but often the increase in quality doesn't justify the increase in render time, especially for web/device video.
Is the 'Smart' Deinterlacer the one that comes with the latest release of VirtualDub?
Thanks Jeff, got that.
If I had the all the time I needed to render, which deinterlacer would you suggest?
Oh and whilst we're on the subject, do you deinterlace before chromakeying (I'm just starting to use Keylight in After Effects CS3).
For iPod stuff, you quickly get to a point of diminishing returns using deinterlacing methods that take longer than Smart Deinterlacer.
For other deinterlacing needs, I would recommend using VirtualDub + AviSynth. Dan Isaacs has a script called "ConditionalSmoothBob" that will produce amazing deinterlaced results if you choose "DeintMethod=1".
However, it takes a long time to render, and the render times will vary depending on the content of the clip, which affects just how hard the deinterlacer has to work.
More details if you choose that route.
I'd spend the $30 for QT Pro.
I use QT ALL THE TIME and find the converter well worth the money.
It does a great job on avi files.
Do you have an iTouch
And does your QT Pro video fill the screen?
I've tried adjusting the size in PP CS3 but can't get it to do that (and Jeff's method seems, as he himself recognises, is overkill for what I am doing).
Thanks again. I've looked at AVISynth and it looks a little heavy for me - I reckon VirtualDub and the Smart Deinterlacer is the way to go for me!
Although not related to this topic, do you deinterlace footage prior to a chromakey filter, such as Keylight? And if so, how do I get VirtualDub to recognise my MPEG 1080i 25 files from Premiere?
All the best,
>do you deinterlace footage prior to a chromakey filter, such as Keylight?
Not really. I might try it if I can't get a good key, but between Ultra and Keylight, it's hard *not* to get a good key.
>how do I get VirtualDub to recognise my MPEG 1080i 25 files from Premiere?
VirtualDub is .avi only.
Jim or Dan,
Have either of you run into any issues with MPEG2 mod? VirtualDub is stable and non-intrusive and non-conflicting; I'd hate to give that up for a "hacked" version that is more troublesome. Just look at what happened when someone tried to updated HuffYUV to version 2.2 or 2.5 or whatever it was. It was a mess.
I've been using that version of Vdub for all my dv2Film testing this whole time.
"Me? I deinterlace using VirtualDub with the SmartDeinterlacer plug-in and VirtualDub's built-in resizing to convert to 640x480 (plays nicely in iTunes) and let it go at that. -Jeff"
Hi again Jeff,
Can I be clear as to what the method is here (sorry to be pedantic)?
Deinterlace and resize in VirtualDub to 640 x 480, reimport the AVI to PPro Media Encoder and export as Ipod Video Large.
If that's the case, then the video is too small on my iTouch!
Define "too small", please. Is it tiny and unwatchable, or is it a watchable size but not filling the screen?
What frame size is your project in Pr that you use to export via the Media Encoder?
Well it's about half the size of the screen, so "watchable size but not filling the screen".
The file is resized as you suggest to 640 x 480. I then import that (deinterlaced) resized 640 x 480 file in to a PAL widescreen project (720 x 576 PAR 1.77). As I'm writing this, I sense this is where I am going wrong...
Any more thoughts Jeff?
Trust your senses... :)
Custom Pr project
25 fps (if the avi from VirtualDub is 25 fps, otherwise just match the frame rate of VDub file)
No Fields (Progressive)
The AME preset will default to 30 fps.
I've never worked with PAL source footage before. Let us know what happens.
You da man! Perfect!
You're welcome. :)