Conversion 1080i to 720p (europe)

[Rafael Amador]

Hi Larissa,
FC can do a very good downsizing if you set it properly.
Just drop your 1080i in a 720p sequence and apply a deinterlacer.
In the Sequence Setting, set “Render all YUV in High Precisio” and Motion Render> BEST.
FC will do it in a fraction of time than Compressor and nobody will tell the difference.
Going from 720p to 1080i will be a bit more complicated if you want the picture look as been shoot interlaced.
Rafael

http://www.nagavideo.com

[Walter Biscardi]

[Larissa Goerner] “did anyone ever convert 1080i material to 720p or the or the other way round?
how can i do that best? “

We do this all the time (and 720 to 1080i) using the AJA Kona 3. It’s realtime and it’s incredibly clean.

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

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[Ed Dooley]

I disagree about using FCP. It does it in a fraction of the time because it’s just throwing away half the resolution. I wouldn’t ever do it that way unless it’s an emergency and you need it “now”. If you don’t have access to hardware (as Walter suggested), then Compressor (using Frame Controls) is the way to go from interlaced to Progressive, and it’s agonizingly slow! If you have a 4 or 8 core MacPro, you should look into QMaster, which is part of FCS, and assigning rendering to all the cores.
Ed

[Rafael Amador] “Hi Larissa,
FC can do a very good downsizing if you set it properly.
Just drop your 1080i in a 720p sequence and apply a deinterlacer.
In the Sequence Setting, set “Render all YUV in High Precisio” and Motion Render> BEST.
FC will do it in a fraction of time than Compressor and nobody will tell the difference.
Going from 720p to 1080i will be a bit more complicated if you want the picture look as been shoot interlaced.
Rafael”

[Rafael Amador]

[Ed Dooley] ” FCP. It does it in a fraction of the time because it’s just throwing away half the resolution”
Can you tell me which resolution are you throwing when working in 32b floating point?

[Ed Dooley] ” then Compressor (using Frame Controls) is the way to go from interlaced to Progressive,”
This I do it in FC with Twixtor that makes a better job, and faster, than Compressor.

FC (alone) can not beat Compressor when creating new pixels or in between frames, but this is not what we are talking about.
I’m tired of hearing FC can’t do this, FC can’t do that.
Try it.
Rafael

http://www.nagavideo.com

[Ed Dooley]

Well, you didn’t suggest that she use Twixtor (or buy it), you said drop it in a 720P timeline and apply a deinterlacer. FCP has a built-in deinterlacer that throws away fields (Twixtor wasn’t mentioned, and she may not own it anyway). If she did as you suggested (add a deinterlacer) she would have thrown away half the fields and half the resolution. My opinion is that’s a bad thing. I also like Nattresses’ deinterlacer: https://www.nattress.com/Products/filmeffects/filmeffects.htm
Ed

[Rafael Amador] “[Ed Dooley] ” FCP. It does it in a fraction of the time because it’s just throwing away half the resolution”
Can you tell me which resolution are you throwing when working in 32b floating point?

[Ed Dooley] ” then Compressor (using Frame Controls) is the way to go from interlaced to Progressive,”
This I do it in FC with Twixtor that makes a better job, and faster, than Compressor.

FC (alone) can not beat Compressor when creating new pixels or in between frames, but this is not what we are talking about.
I’m tired of hearing FC can’t do this, FC can’t do that.
Try it.
Rafael
“

[Paul Colin]

I luckily have a KONA 3 card (yeah AJA)… but the media I ingest is either from a P2 card or on an SD card (AVC HD) not tape. So the question is; how do I set things up to convert 1080i to 720p using media ingested from these sources?

Thanks,
Paul Colin,
Cezanne Studio
NYC

[Arnie Schlissel]

[paul colin] “but the media I ingest is either from a P2 card or on an SD card (AVC HD) not tape. So the question is; how do I set things up to convert 1080i to 720p using media ingested from these sources?”

Typically, you would cross convert when you lay off to tape. If you’re not delivering on tape, you can do this with Compressor, AE, Shake, probably Motion.

If you’re going from 50i to 50P (or 60i to 60P) you would export your finished movie from FCP at 1080 50i (or 60i).

In Compressor, start with one of the 720P settings from “Advanced Format Conversions”, and change it to the appropriate codec, set the frame controls on “Auto” and submit the batch. If it’s not to your liking, you may want to play with the deinterlacing & motion settings in the frame controls.

In AE, drop that into a comp that’s 720 50P, scale it to fit, then render out of AE in the required 720 codec. This will turn your fields into frames, and AE can interpolate the missing lines in each frame.

In Shake, you would do this at the FileIn node. You use the remastering settings in FileIn to change the frame rate from 50i to 50P, and the size from 1080 to 720, then attach a FileOut node and, again, render to the appropriate codec.

For Motion, I’d again make a comp set up to 720P50, scale to fit and render out from there.

Arnie
Post production is not an afterthought!
https://www.arniepix.com/

[Walter Biscardi]

[paul colin] “So the question is; how do I set things up to convert 1080i to 720p using media ingested from these sources?
“

If you’re needing to make a single conversion at the end of the process, you can make a single conversion as you lay back to tape.

If you need to make multiple conversions, we’ve actually laid material off to tape and recaptured allowing the Kona 3 to convert the footage to whatever we’re editing. Of course if you have a lot of material, that could be time consuming, but ultimately the Kona does the best job of converting 720 and 1080 short of a terranex.

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!
Read my Blog!

[Rafael Amador]

Hi Ed,
You are right about the de-interlacing.
Sorry I wrote Twixtor when I meant FieldsKit. If I’m in a hurry I use Nattress too.
As I said before I try to do as much things as I can in FC, off-course avoiding FCs shortcomings like the crappy FC de-interlacer.
BTW, I saw your name in the Web Streaming forum. I would like to ask you a couple of things about h264-QT-flash.
Rafael

http://www.nagavideo.com

[Ed Dooley]

I try to avoid the trips out of FCP too. I still do all my “Ken Burns” moves in AE though. I’ve been using it for so long that it’s so much easier for me. I think the scaler’s better in AE anyway. If I spent more time doing it in FCP I guess I would get better. 🙂
I don’t purport to be a H.264/Flash wizard, but I have been playing with it. There have been some lively discussions here with walter and David (and others) about it.
Ed