Comments

MoBetta wrote on 4/12/2002, 12:09 PM
I have been adding the resample, the interlace and the median filter when using the pan/crop feature. It is acceptable, although it takes a long time to print to tape from the timeline ( I haven't tried rendering it first), 1 hour for a 12 sec. clip. My processor is a 600MHz, 512 RAM, PIII, with 100+ GB hard drive.

I think it works fine for home video projects or for Internet media applications, but I am working on a documentary for a film festival, where the video will be shown on a large screen and on a large screen I still get some jitter/noise.

Can anyone suggest the next step to get better results?

Thanks

MoBetta
fongaboo wrote on 4/13/2002, 10:00 PM
If you find a better way let me know..

But my one question is.. isn't Resample a temporal effect? ie. if the playback rate of the clip does not change than I don't think it does anything. Am I wrong?
Chienworks wrote on 4/14/2002, 6:03 AM
Fongaboo, one would thing so. However, what i'm wondering is if the pan/crop tool calculates frame by frame, rather than field by field. If it is frame by frame, then paired fields will be identical and the motion will be slightly more jittery than if unique fields were generated.
fongaboo wrote on 4/15/2002, 2:16 AM
OK but that assumes that you are using at least two keyframes in one event, right? That is to say.. at the beginning of an event, you have one size and position, but by the end of it, you have another size and position.. and it slowly tweens between.. Am I following?

If I am setting one crop setting (only one keyframe) for each event on the timeline, then using Resample would be a waste of processor power for me, no?

To give context, I am correcting for some botched overscan output of some material that was originally put through a VGA-to-NTSC converter..
bakerja wrote on 9/30/2003, 3:26 PM
I would like to re visit this problem. I normally do not use a lot of pan crop/scaling in my music videos but recently had the need to and found the everpresent jitter in all of the shots with motion of just about any kind. The more I think about it, it must be a flaw.

I did several tests over the same 5 second piece of video. Whenever pan/crop was used or Satish's 3d plugin in either TRACK effects or the EVENT effects, I get jitter. Forcing resample did not help.

Here's a thought, is stretching the picture somehow deleting sync information that is needed in the DV format? Kind of like getting into the vertical interval but not replacing it on re-render?

I don't know, but I have decided to only use pan crop when absolutely necessary.

Any words of wisdom would be appreciated.

JAB
SonyEPM wrote on 9/30/2003, 4:17 PM
Do all of you have 4.0d?
MoBetta wrote on 9/30/2003, 5:52 PM
I do and the problem can't be avoided... So I am not using the Pan Crop all together. I think it is fine for "family" type videos / production, but certainly doesn't meet the necessary output for my documentary.

I am open to suggestions

MoBetta
BillyBoy wrote on 9/30/2003, 6:13 PM
Here's a suggestion. Rephrase your last comment. I think those here that slave over "only" home video, always a labor of love... take as many pains in getting high quality output as anyone laboring for profit. More so probably. A job is afterall in the final analysis just a job. Sure, you try to do as good a job as possible, but you get paid and go on to the next one and that's probably the last you think of it.

Doing something for memories is PRICELESS! Don't even think people that "only" do videos for home use or sharing with family and friends don't care as much or do as much to make the quality the best it can be. In fact Vegas being one of the best editors you can buy regardless of price, if people "only" doing home video pick it, they do so for a reason. Obviously there are many lessor, cheaper products available.