Whats the correct way to export for Broadcast?

[Beth Cramer]

Shane,
I know this is an old thread, but I using your specs for conversion and having trouble.
I have a sequence (shot on Alexa 23.98) I edited same as source in premiere pro cc.
Anyway, I need to deliver spots 29.97. I did the conversion through compressor and brought it back into premiere to check it. There is interlacing however.

I didn’t have any filters checked.. I didn’t see what was listed above in the thread as the critical ones to get proper 3:2 pulldown added so hopefully that’s what’s wrong.
5. Make changes to the Filters or Geometry sections as needed. Those settings listed above are the ones critical to getting the proper 3:2 pulldown added.

though you made reference to them needing to be correc not clear in the post I was following.
I only will be able to check the conversions on my apple cinema display and Plasma TV hooked up via hmi.

Any suggestions?
Thanks very much,
Beth

[Shane Ross]

[Beth Cramer] “I did the conversion through compressor and brought it back into premiere to check it. There is interlacing however. “

Yes…it will be. Most TV specs call for 1080i59.94… that’s 29.97 fps interlaced. Even if you shot 23.98 progressive, it’ll air 29.97 interlaced. That’s the best way to convert 23.98 to 29.97…is to interlace it. If you need to go 24p to 30p…you are hosed. That conversion repeats frames…no two ways about it. And it’ll look stuttery. That’s a worse case scenario. You want this to be interlaced.

[Beth Cramer] “I only will be able to check the conversions on my apple cinema display and Plasma TV hooked up via hmi.”

TVs display interlacing properly. But you need to feed it a VIDEO signal, not a COMPUTER DISPLAY signal. So to check it properly you’ll need a video IO device like AJA and Blackmagic design makes to get the signal over. If you use HDMI out from the computer, that’s a computer signal, and computer video signals can’t display interlacing properly.

Shane
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Read my blog, Little Frog in High Def

[Beth Cramer]

I checked deinterlace in filters a it worked.
Thanks

[Shane Ross]

If you do that then you’ll get repeated frames, and stuttering. Many networks will reject that. I recently had to deal with a 30p deliverable, with a lot of footage shot 24p. Normally this is easy, 24p blends easily across fields in a 29.97 interlaced conversion. But with 30p, no such luck. Occasional frames are repeated and it looks very stuttery.

When feature films are broadcast on TV, or when TV shows that are shot on film or video at 23.98 are aired, they are aired 29.97 interlaced.

Unless your spec calls for 30p…you need to deliver 60i…29.97 interlaced. And that will properly show 23.98.

Shane
Little Frog Post
Read my blog, Little Frog in High Def

[Beth Cramer]

After I selected de interlace in filters with the settings you posted it looked good. I see no interlacing or stutter on the cinema computer display. Can I assume it’s correct without checking it on a tv using video IO device?

[Shane Ross]

[Beth Cramer] “After I selected de interlace in filters with the settings you posted it looked good. I see no interlacing or stutter on the cinema computer display.”

This is NOT the way to properly check an output for broadcast. A computer video signal will not display interlacing properly…and might disguise the stuttering. This setup is fine for basic editing and client viewing, but if you are the final stop before it gets sent to the network, this is not the way to view it.

[Beth Cramer] “Can I assume it’s correct without checking it on a tv using video IO device?”

No. If you are the finishing or online editor…the one making sure that all video levels are legal, that the color is good, that it meets show specs…then you need proper monitoring. ONLY a video IO device and HDTV or Broadcast Monitor can provide this. Those are a requirement if you are the one prepping the show for air.

Shane
Little Frog Post
Read my blog, Little Frog in High Def

[Mitra Mansouri]

Hi Shane Ross

When I try to change the video setting in Encoder, it seems it is not active.
It is grey means I am not able to change anything. what’s the way?