De-interlace freeze frame problem
by Neil Parker
on
Dec 3, 2004 at 4:00:51 am
I want to freeze a tennis ball on the strings of a racket during the impact. I recorded the shot using a high frame rate. I discovered after buring a DVD that I had a jitter, so i'm now using my view screen on my camera as a monitor. I am doing a "make freeze frame" on the frame i need, however after de-interlacing the freeze frame it's not the frame I wanted. It's a few a head. After several tries I can't get the frame i'm seeing in my cameras view screen to look like the freeze in FC. Any help would be great...
Re: De-interlace freeze frame problem by Kathy on Dec 3, 2004 at 11:57:39 am
First put your freeze frame on the timeline. Then double click it and deinterlace it from there. You couldo use the flicker filter
instead.
Regards,
Kathy
Re: De-interlace freeze frame problem by Rob Forsythe on Dec 3, 2004 at 12:04:32 pm
[Neil Parker]"however after de-interlacing the freeze frame it's not the frame I wanted. It's a few a head. After several tries I can't get the frame i'm seeing in my cameras view screen to look like the freeze in FC."
I don't quite understand how this would happen if you remember to do all the right steps.
Here's the proper work-flow:
1. Put the timeline cursor on the exact frame you want to freeze.
2. Hit the "f" key. This will put that exact Frame into the Viewer (left) window.
3. Choose "Make Freeze Frame"
4. Edit this Freeze Frame into the timeline.
5. Add the "De-interlace" filter or "Flicker Filter" to that Freeze on the timeline
6. RENDER (you must Render to get full quality.)
To make judgments on QUALITY (including whether there is "jitter" in a freeze-frame) in FCP you MUST use an external video monitor.
You can NOT use the computer screen for this and you probably cannot use the LCD screen on a camcorder to judge full-quality either.
But you CAN use the camcorder's video output to drive the external monitor.
Just plug the camcorder's video (and audio) output into any monitor (or TV/monitor) that has those inputs.
If you have any trouble viewing FCP this way...
This list contains about everything to try to enable External Monitor VIDEO and AUDIO via FireWire, viewing in the Canvas window on the computer screen, and being able to record on the external FW device... carefully observe ALL steps.
1. Make sure you have View (Menu) > External > ALL FRAMES set.
(If the ALL FRAMES option is grayed-out... jump to step 6 below and continue.)
2. Make SURE your Canvas window (right window) in FCP is set to "Fit to Window" and that it has not been "pushed off" the edge of the computer screen.
3. Make sure your CANVAS View Menu (Box Icon with broken sides) is checked on Image or Image+Wireframe... NOT just Wireframe.
4. Make sure your CANVAS View Menu is checked on RGB... NOT just Alpha.
5. Make sure your Final Cut Pro (menu) > Easy Setup... is set for DV-NTSC (or DV-PAL, if that's where you are).
6. Make sure your Final Cut Pro (menu) > Audio/Video Settings > A/V Devices (tab) > Mirror on Desktop > must be CHECKED. (If not, playing video will not appear in the Canvas.)
7. Make sure the "Log and Capture" Window is CLOSED and not just "hidden" behind other windows.
8. Turn off the power to the Camera/Deck/Converter Box, then turn it back ON.
9. Make sure the camera is in VTR mode... or the deck is in DV (DV, iLink, or FW) input.
10. Re-check and make sure your FW cable is well-connected at both ends (or try a new cable.)
11. Important: Quit FCP, then Restart FCP.
12. Now again, make sure you have View > External > ALL FRAMES set...
Re: De-interlace freeze frame problem by steve on Dec 3, 2004 at 8:39:06 pm
It's probably because only one FIELD of the frame contains the image you need. I had the same problem with a camera flash that I wanted to freeze frame. I outputted a quicktime movie of the images and then used the Compressor Application to combine the fields into one still frame. I can't remember how to do it but after an hour of playing with Compressor I finally got the result. Good luck.
Re: De-interlace freeze frame problem by Rob Forsythe on Dec 3, 2004 at 11:22:42 pm
[steve]"I can't remember how to do it but after an hour of playing with Compressor I finally got the result."
You don't NEED to use anything other than FCP's own filters for situations like this.
The "Flicker Filter" will combine two fields (in varying amounts) so that this isn't a problem.
And "De-interlace" will let you CHOOSE which field (Odd or Even) you wish to "double".
FCP is very versatile, you can use it's controls in many creative ways to solve many complex "problems".
Re: De-interlace freeze frame problem by Neil Parker on Dec 5, 2004 at 9:43:38 pm
Hi, Thanks for the help. I just purchased a monitor and everything works great. I'm trying to freeze a tennis ball on the strings. I can fing the exact frame i'm want in the monitor and in the canvas, but when i de-interlace it seems to show the frame before on the monitor. Where can i choose odd or even for de-interlace?
Re: De-interlace freeze frame problem by Rob Forsythe on Dec 6, 2004 at 10:59:33 am
[Neil Parker]"Where can i choose odd or even for de-interlace? "
All filters are adjusted using the same technique in FCP.
1. Edit clip to timeline.
2. Drop filter on clip in timeline.
3. Double-click this clip on the timeline. It will pop up into the Viewer (left) Window.
4. Click on the "Filter" tab in the Viewer.
5. Adjust any filter parameter in this window.
6. Render this clip.
7. Judge for quality on an external video monitor.
