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Jitery Video in some parts of program….am miffed on this one!!!
Am doing a program with FCP5(bought Aug 2005). Program looks fine in FCP, and DVD Studio Pro, until I burn the DVD. Then a few scenes have a jiter-look to heavy motion. This is old 16mm footage, or a train ride, and when there are scenes of a camera pan, or people walking at a station for example it appears to have motion problems. I do not have this hooked up to an NTSC monitor and was told this would show the problem before burning.
There is also some film transfer that was on super 8, and some Betacam footage in the program, which seems to be fine. I had this once before, and wound up recapturing the portion that had a problem. I would hate to start over, so thought I would see what you guys might suggest I do. Thanks, Greg(Doubleheader)PS I converted to Quicktime, then imported to Converter to make the mpg2, as I always do. Tried doing this with a different setting and made no difference.
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14 Replies
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The footage that is jittery with motion has the wrong field order defined.
(upper, lower etc..)if its in a final cut timeline and not separate clips, you will have to re-interpret the footage and compress again to get it to work.
You have to preview on an NTSC monitor as a computer monitor or lcd won’t show the problem.
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Sounds like it might be a field dominace issue with the old footage. You might try switching the field dominance on your compression and see if that helps. If it was lower then try upper or vice versa.
I have had trouble with pans and movement as well on compressing with these compression programs. I use compressor. The bottom line appears to be that if yo want to get true movie DVD quality then you have to hardware compressors/encoders at a nice chunk of money or live with the fact knowing that the compression programs for the most part are not going to cut it.
Good Luck
G5 Mac OS X
Dual 2.0 GHz
FCP 4.5 HD
XServe Raid 1 TerabyteG5 Mac OS X
Dual 2.3 GHz
FCP 5.02 Studio
G-Tech G Raid 500 GBs
2 – Lacie Drives 200 GBs -
[Lee Burrows] “DVD quality then you have to hardware compressors/encoders at a nice chunk of money or live with the fact knowing that the compression programs for the most part are not going to cut it.”
There are a number of software encoders that when properly tweaked produce equal results to any of the hardware encoders out there. The only real advantage is speed.
The encoders that don’t allow you to change every setting on every aspect of the encode do produce inferior results though.
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I’d love to believe you you, Borjis but until I see proof or somebody gives me settings that I can then apply to see the difference then I have not compressed anything even close to a movie you would rent from Blockbuster.
I encoded with compressor, cleaner and bit vice with no luck of a clean compression. Still plpenty of artifacting after compression.
Lee
G5 Mac OS X
Dual 2.0 GHz
FCP 4.5 HD
XServe Raid 1 TerabyteG5 Mac OS X
Dual 2.3 GHz
FCP 5.02 Studio
G-Tech G Raid 500 GBs
2 – Lacie Drives 200 GBs -
those 3 programs don’t let you have complete control as far as I know so its no wonder your seeing that.
pc encoders that can do pro quality: Tsunami, Procoder and Cinemacraft.
Cinemacraft software encoder has been used to encode some of the hollywood produced DVDs.
Of the 3 though, procoder gets my vote. You can change every single aspect of the encoding with it. while the others allow you to change only those aspects that matter for picture quality. (gop structures and quantization etc..)
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Interesting! Thanks Borijis. Compressor actually allows me to play with the GOP structure from like IBBP to IP and from 15 to 6 on the closed GOP. However I have not heard of Quantinzation.
I will check out those programs. I run a MAC system but will check it out. I would love to get one of your high level settings if you don’t mind so I can test it out once I get the program. You can just give me the few settings you tweak and I will the other presets alone if you are alright with that.
Lee
G5 Mac OS X
Dual 2.0 GHz
FCP 4.5 HD
XServe Raid 1 TerabyteG5 Mac OS X
Dual 2.3 GHz
FCP 5.02 Studio
G-Tech G Raid 500 GBs
2 – Lacie Drives 200 GBs -
I wish compressor would allow you to set custom GOP’s though.
As far as i know you can only do 15 or 6.
Though 6 is pretty good and much better than 15.
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[Borjis] “Though 6 is pretty good and much better than 15.”
It maybe theoretically but visually there is very little if any noticable difference with the artifacting at 6 compared to 15. And if you think that there is then I’d love to see some of your compressions if you don’t mind.
Lee
G5 Mac OS X
Dual 2.0 GHz
FCP 4.5 HD
XServe Raid 1 TerabyteG5 Mac OS X
Dual 2.3 GHz
FCP 5.02 Studio
G-Tech G Raid 500 GBs
2 – Lacie Drives 200 GBs -
Thanks for the replies fellas.
Now how do I find this upper and lower field thing. Another source told me the same thing, but I could not find it on Compressor, etc.Also what is field dominance…same thing as upper and lower you mentioned.
By the way I am on
G5 Dual 2.3
with G-raid 500 alsoThis problem is annoying because it has happened only once before with another program. This whole program is about an hour so no problem with fitting on a disk or anything like that.
Just explain how to change those settings and I can give it a try.
Its weird cause its not on all the video. A guy previewed the disk, and told me he didn’t see any on the one I sent him, so I had him sent it back, and it was the same as the others I made, so he wasn’t as picky I guess!I am also capturing with a Kona LS system for Betacam, and other Composite materials into the MAC, and G-Raid. I used to think 500 gigs would be way more than enough, but actually its 90% full with projects in the works!
Greg
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[Doubleheader] “Now how do I find this upper and lower field thing. Another source told me the same thing, but I could not find it on Compressor, etc.
Also what is field dominance…same thing as upper and lower you mentioned.”
yeah upper and lower fields and dominance are the same thing.
you have to go into the presets of compressor to find it. its usually set to auto.
I find that if you compress out of fcp (though it takes a little longer) compressor will always get the field order right as long as your footage was properly interpreted. I get the feeling your clips that jitter are not properly interpreted. so right click and get the settings for your clip and right click where it says the field dominance and change it to the opposite, then re-insert it into your timeline. It won’t change it just by changing it in the bins, you have to remove it from the timeline, change it, then put it back in. (at least thats how I have to do it)
I’ve also found that if I just capture clips from digibeta or bsp and go right into compressor it always improperly interprets the fields (it always goes lower instead of upper).
As for the GOP structure, making it 7 instead of 15 does make the codec less efficient and bigger file sizes occur BUT you have a lot more I-Frames which means a scene/shot with potential to pixellate on fast motion where everything is moving, will hold together way more likely than a 25 GOP would.
Thats one reason why the sony fx1/Z1 camera with its 15 frame GOP can’t hold the resolution that a JVC HD100 can with its 6 frame GOP during a trying shot showing everything on the screen moving at once.
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