crappy quaility when capturing 24p

slimchrisp

slimchrisp

Well-known member
ok, before you shoot me, i've read the stickies, searched the forums, and read a lot of tutorials. it's late, so maybe i'm just not seeing straight, but i'll go ahead and post the question yet again. someone made another post to the exact same problem i'm having. the thread is http://www.dvxuser.com/V6/showthread.php?t=26306

in the thread there is this image, which is exactly my problem:

Picture-1.jpg



my wavy lines are not quite as distinct though. more like the zebra display in camera. plays back fine on tv though. i'm not even getting to the editing. just capturing. i shot at 24p, in normal mode, not squeeze. i've used all the settings i've read about, and the jacked up matrix wavy line thing seems to happen no matter what i try. like i said, it's late, so maybe i'm just missing something. just thought someone might know where the "make your captured footage look like crap" checkbox is so i can uncheck it.
 
Most of the time this happens when you try to put footage shot at a certain framerate into a TIMELINE that runs at a different framerate. Did you shoot it in 24P or 24PA?

If you shot it in 24p, you should make sure the SEQUENCE you are importing it into is likewise the same. If 24PA, the sequence/timeline should be set as 23.98. You can check to see if your current SEQUENCE PRESET is set correctly by pressing Cmd-0.

If it isn't, go to the Final Cut Pro menu, Audio/Video options, and change your Sequence Preset. Then open a new sequence by pressing Cmd-N.
(Changing the sequence preset does not affect your current sequence, only sequences created after the change.)

See if that helps. I ran into a similar problem awhile back and posted it here.
http://www.dvxuser.com/V6/showthread.php?t=43987

Hope this helps.
 
Oh, and if you are still getting interlaced footage in the timeline you import to, you can always go to Effects > Video Filters > Video > De-Interlaced.
 
wait wait... let's not get overly confused...

24P needs to be edited in 29.97 sequences. When you do this you will get a pattern of interlaced frames. Similar, though what you showed above was GROSS!, to the above frame... just not EVERY frame.

24pA CAN be captured with the interlaced frames removed and then would be edited in 23.98 sequences.

Now -- if indeed what you are seeing (can you post a grab?) is zebra like images on EVERY frame... or maybe very bright luma frames??? MIGHT be that you've actually turned ON zebras for your canvas. Those can be turned off, but I forget how... maybe under MODIFY??? Open your online help and search for zebra.

Good luck,

CaptM

(edit:) Since the above frame was taken from the L&C window you have to assume it was 1) an interlaced frame and 2) lower quality viewing as the L&C window is want to do... YOUR interlaced frames will be MUCH thinner and sharper edged... if indeed that's what you've got.

Edit 2... be careful about the de-interlace filter when sticking it on 24p footage...I'm not sure what it does to the progressive frames... but I'm sure you'll have a slight quality loss.)
 
Well if he wants get rid of the pulldown entirely on the 24p footage, he should probably convert the footage using Cinema tools or something. Those interlaced frames aren't pretty.
 
aravance said:
Well if he wants get rid of the pulldown entirely on the 24p footage, he should probably convert the footage using Cinema tools or something. Those interlaced frames aren't pretty.
Click to expand...

yeah, i tried cinema tools and did not see a difference.

Now -- if indeed what you are seeing (can you post a grab?) is zebra like images on EVERY frame... or maybe very bright luma frames??? MIGHT be that you've actually turned ON zebras for your canvas. Those can be turned off, but I forget how... maybe under MODIFY??? Open your online help and search for zebra.
Click to expand...

hmmmmm. that sounds like it could be what i'm dealing with. i won't be home to look at this again until tonight, but i will go through your suggestions (aravance/CaptainMench) when i get home.

a huge thanks to both of you for replying to this. i'll let you know how it goes tonight, and post a grab as well.
 
That's ok... I just expect a nice bedroom for myself and family when I take my hop over to Hawaii for vacation!! But only if it works.

hee!

CaptM
 
Nope -- you're stuck with it. That's interlacing. You should be seeing 2 frames interlaced next to eachother as you arrow frame by frame... so for every 5 frames, you should see 2 together that are interlaced.

That is how it should be for the way you shot. It's not too bad if you don't have fast camera move. Watch it on an NTSC monitor and you'll be happy-ish with it.

IF you really want to get rid of those, I'd really suggest heading the captured material over to Cinema Tools and let it do it's magic. Then it will remove the interlaced frames and combine them back into the 4 frames instead of 5 and you can edit in a 24fps timeline.

CaptM
 
CaptainMench said:
Nope -- you're stuck with it. That's interlacing. You should be seeing 2 frames interlaced next to eachother as you arrow frame by frame... so for every 5 frames, you should see 2 together that are interlaced.

That is how it should be for the way you shot. It's not too bad if you don't have fast camera move. Watch it on an NTSC monitor and you'll be happy-ish with it.
CaptM
Click to expand...

are you saying this is the way it's going to be because i shot 24p? would 24pa prevent this? it just looks so bad.
 
24pA would have given you a better option... it would have given you the chance to remove those interlaced frames as you were capturing.

Then you'd be in 24fps editing all progressive frames.

I still think Cinema Tools is your answer:

Use the Reverse Telecine Feature: If your clips are in the NTSC standard of 29.97 fps, you
can use the Reverse Telecine feature to reverse the 3:2 pull-down that was used convert
the clips to 29.97 fps, thus removing the extra fields created by the pull-down and
converting the clips to 23.98 fps or 24 fps. When clips contain both audio and video, the
Reverse Telecine feature also adjusts the audio speed so that the audio and video remain
in sync after the frame rate is changed.

You can even BATCH all your captured clips at once!!



CaptM
 
so basically, i should shoot with 24pa from now on? it sounds like i'll get better results, but there will be a little extra work on the front end in final cut? i'm getting a better grip on 24p vs. 24pa, just still working on getting a dumbed down version in my head. i think i've got a decent grip on it though.

thanks again for all the help everyone.
 
Here's how I see it...

60i mode... good for soap operas, home movies and slow motion
30p... great looking 29.97 footage... slight jerk when camera pans fast
24p... "Film Look" good for watching on TVs or Broadcasting VERY Jerky on fast pans... Stay in 29.97 for edit and picture lock.
24pA... For use ONLY if you want to stay in 24... great for DVDs and Film -- SUCKS for tv and broadcast. Normal Film Jerk on fast pans. IF you want to go to broadcast you'll need to add the 3.2 pulldown back on and it will look JUST like 24p setting above.

CaptM
 
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