25PsF/25p/50i sequence. Need advice

[Rafael Amador]

[Max Chernyaev] ” But when I reconnect media FCP recognizes HDCAM footage as interlaced”
Check it in the Browser as Progressive (NONE) and drag it again to the time-line.
rafael

http://www.nagavideo.com

[Max Chernyaev]

Sorry, that’s a bit more complicated than dragging. Sequence have about 380 cuts plus effects etc.

[Jeremy Garchow]

It’s a pain but you have to select all in the timeline and then right click on any clip and choose item properties > format. Find the field Dom row and start changing those from Upper to None. Also make sure to chnage your sequence field Dom from upper to none. You should also change these in the browser as Raf mentioned to protect future edits.

Jeremy

[Max Chernyaev]

Thanks, but in my case that is really a pain. I guess there must be a way to make Cut treat HDCAM media as progressive.
Right now I see 2 ways of dealing with that.
1. Transcode 50i to 25p with Compressor. No changes applied to picture, just format change.
2. Tweak ‘fiel’ flag in source .mov file (many thanks to Michael Magallon for his post)
I consider both as useable but not completely correct and universal, so I ask for colleagues’ opinion.

[Jeremy Garchow]

[Max Chernyaev] “Thanks, but in my case that is really a pain. “

Yep it is.

[Max Chernyaev] “I guess there must be a way to make Cut treat HDCAM media as progressive. “

What you have to do is capture the footage as 50i (but it’s still 25psf) and then change the field dom to None in the browser before you begin editing. What kind of capture card do you have?

[Max Chernyaev] “1. Transcode 50i to 25p with Compressor. No changes applied to picture, just format change. “

No reason for this

[Max Chernyaev] “2. Tweak ‘fiel’ flag in source .mov file (many thanks to Michael Magallon for his post) “

You have to change it in the FC browser in order for it to work properly. If you do this before you edit, it’s not so much of a problem. You just have to remember to do this very important step before the edit. For now, you have to change the FCP field flag as your footage is progressive, FCP is just treating it as interlaced.

Jeremy

[Rafael Amador]

[Max Chernyaev] “2. Tweak ‘fiel’ flag in source .mov file (many thanks to Michael Magallon for his post)
I consider both as useable but not completely correct and universal, so I ask for colleagues’ opinion.
“
It doesn’t exist such a “Field Flag”.
by default FC will recognize any 8/10b 1080 as Upper and any 8/10b 720 Progressive.
FC is able to properly recognize the field order of any MPEG-2 (guess MP4 and so too) that they have a proper Field Order Flag.

[Max Chernyaev] “1. Transcode 50i to 25p with Compressor. No changes applied to picture, just format change. “
This means a generation lost.
Rafael

http://www.nagavideo.com

[Max Chernyaev]

[Rafael Amador] “It doesn’t exist such a “Field Flag”.
by default FC will recognize any 8/10b 1080 as Upper and any 8/10b 720 Progressive.”

Sorry Rafael, that’s not correct. FCP is a bit smarter and looks for a tag called ‘FIEL’ in ‘STSD’ group of a .mov file to determine original picture structure. You can trick FCP modifying this field. Look.
Take one short mov (in my case – fragment of HDCAM footage), name it FIEL-test-original. Dropping it to FCP we get Field dominance set to Upper.
Ok. Duplicate that file, call it FIEL-test-mod. Modify FIEL tag using Dumpster: set FIELDS=1, Details=0. Save. Drop it to Cut.
Got FD “NONE”.

Tags for original mov
…and modified

https://forums.creativecow.net/thread/8/1018146
‘trak’ > ‘mdia’ > ‘mdhd’ > ‘vmhd’ > ‘stbl’ > ‘stsd’ > ‘fiel’
Fields = 1
Details = 0

The above values will provide a progressive flag in the QT file.
Michael Magallon

[Max Chernyaev]

[Jeremy Garchow] “If you do this before you edit, it’s not so much of a problem.”

I’d be glad to do this, but let’s assume that 1) I don’t have an opportunity to recapture anything, 2) I’ve got final sequence from editor. He did what he did: edit program using offline progressive PAL proxy.
Now I am to solve that problem in this particular circumstances. )

[Jeremy Garchow]

I gave the solution earlier. you have to do it clip by cli in the timeline and change your field dom of your sequence to none. This will ensure progressive renders with progressive footage. You’d be done by now if you started the first time 🙂

Jeremy

[Rafael Amador]

Good to know that but I don’t think that editing your clips with Dumpster is the easier solution.
rafael

http://www.nagavideo.com