[Sean Oneil]

Not everyone has an expensive plasma with a high-end deinterlacing chip. Most TVs can’t handle bad cadence. And most people’s TVs don’t even get the chance, their cable or satellite box does it and those things are awful at it. It’s also possible the channel you’re watching those shows on runs it through a Teranex. Not every station does that. If you edit 29.97 with 3:2 pulldown it won’t pass QC at most places. Sony, Paramount, and Universal will kick it back. For online delivery Apple won’t accept it. Just yesterday I got a list of deliverables for creating added-value content for a studio’s home video department. There’s an entire page explaining how and why not to do this and that non-continuous 3:2 cadence will not be accepted for NTSC or 1080i.

Honestly it’s a little disturbing that someone of your stature would advocate this.

I’ll give you an example. Here’s what your footage will look like on an LCD with no fancy deinterlacing chip:
https://www.imdb.com/video/imdb/vi2041708825/

Here’s what my footage will look like on the same LCD:
https://www.apple.com/trailers/sony_pictures/hancock/

Sean

[Sean Oneil]

[Shane Ross] “Think about all the TV shows you watched BEFORE HD. Simon & Simon, Magnum PI, Law & Order, Even Stevens, LA LAW, X-FILES…ALL of these shows were shot on film and telecined to digibeta at 29.97…with pulldown. Then edited ad 29.97, and mastered at 29.97. If you went thru frame by frame, you’d see the odd interlaced frames. But when you watch them…nothing. Looks normal.”

It doesn’t look normal anymore. It looked normal back then because CRT televisions are not affected by bad 3:2 cadence. Modern displays are.

Paul and Walter’s examples are different. Editing 24p on a 30p or 60p sequence is not nearly as bad.

Sean

[Sean Oneil]

[Bob Zelin] “I understand that even with 10G ethernet, you get a max thruput of 180Mb/sec – which is fine for a single stream of 10 bit uncompressed HD-SDI, but nothing beyond this. I don’t know what the bandwidth requirement is for 4:4:4. I think 10 bit 1080i is about 120Mb/sec.”

Ouch. That worries me. It tells me is that there’s still no TCP offloading for OS X (where the card does the heavy lifting) so the CPU is doing all the work and it can’t handle 1/4th of a 10gb stream, let alone four of them.

Thanks for the important info. I think I’m going to wait a few months, maybe when Snow Leopard is out.

Sean

[Sean Oneil]

You should amend your question with more clarity and details if you hope to find a solution here.

Sean

[Sean Oneil]

[Jeff Scott] “I have a client who wants to “future proof” his project by editing in HD. This project does NOT include any video media, just HD graphics and stills. However, his immediate delivery requirement is SD NTSC.

Is it better to bang this out on a 1080p 29.97 or 1080i timeline?”

You’re focusing on the wrong question. What’s most important is the frame rate of your graphics. If it’s 60fps, then you need to edit on a 1080p60 sequence. Otherwise with 1080i you lose spatial quality (you’ll end up with 540 lines per frame) and with 1080p30 you’ll lose temporal quality (only 30fps instead of 60).

If the graphics are created at 30fps, then just use a 1080p30 sequence. There’s no advantage to using 1080i in that scenario. And no, it does not downconvert any better.

Sean

[Sean Oneil]

There are still Media 100 guys?? — I kid, I kid.

Sean

[Sean Oneil]

I’ve used a 5500 a bunch of times. What is your question exactly? You can’t get it to work? Could you be more specific?

You can find the manual online.

Sean

[Sean Oneil]

[jack fox] “What preset do I use in Compressor to maintain full quality?”

I wouldn’t use Compressor or After Effects. It does all kinds of heavy processing you don’t need or want. All you want is to add pulldown and nothing else. Use the Kona, or if you must use software then use Nattress Film Converter.

For removing pulldown, always use Cinema Tools.

Sean

[Sean Oneil]

It doesn’t matter if you put your film on Digibeta. Pulldown can be added and removed seamlessly.

Sean

[Sean Oneil]

[Shane Ross] “There are issues with TC slippage occasionally, but he has a method to figure this out before he lays off the entire 90 min. He might have one false start, but then he gets it right on the next time.”

Same situation with me. I test laying off the first 10 seconds. If it’s on, great. If not I adjust the offset and then it works fine.

Sean