What's wrong with my A1
 

I tried everything to figure this out but no luck. If you see the footage anything with horizontal line vibrate and flicker. It is worse when you see on tv. Here a sample http://www.vimeo.com/1353884. Thanks.

Most likely from poor downconvert software, you don't see that if you watch it on a HDTV do you?

This is SD footage and it was captured with premier pro 2. I don't know what to do, it only happens with my A1.

I always thought the A1's SD was mediocre at best. I always notice too much aliasing on movement with anything detailed.

Might also be the following:

1. Might be artifacts from compression (does the XH A1 downconvert from HDV to get it's SD to tape?). That wall has lots and lots of small tiny details, which is a great way to break many compression schemes, especially HDV.

2. Might be the shutter speed matching the frequency of the fluorescent lights. Change the shutter speed and you might be able to lessen the effect.

3. It might be moiré. This is a typical problem with video cameras, usually with clothing that has very detailed patterns. If it is moire, then there's nothing wrong with your camera, it's just the way it works. You just have to work around those types of patterns. I do see some moiré in the shots of the baskets, and it "seems" to match the movement of the walls, just not as severe. But I'm just guessing.

- Moiré entry on Wikipedia
- An example of Moiré

I was under the impression this was shot on SD.....

It is was shot stright SD.!!!

Hi Kiflom...........
 

Can't really say why it's doing what it's doing, but have seen any number of posts and video where SD shot as SD on an A1/ G1 looks pretty ropey.

The best suggestion I can make is to shoot in HDV and downconvert in PP2.

Can't guarantee it will cure it but a good chance it will.


CS

Yeah, I'm wondering if the XH A1, creates it's SD from HDV and then writes that to tape. That may explain why there is a breakdown in movement in the SD image that's not normally there? Just speculating, since I don't really know. But those CCD chips should be giving a gee-whiz holy-cow SD image, but ...

Oh well, shoot it in HDV next time, then downconvert, you'll probably get a better image.

Hey Michael...........
 

I think by CH's rules you owe me a beer, just stick it in the post will you!


CS

PS: Boy, that Michael doesn't hang about!

what are Chris Hurd's rules?
i fear breaking them and owing virtual beer!
i bought some virtual beer from eBay, but by the time they arrived, they were warm. so i bought a virtual fridge. works great, and virtually CFC free.

Too scared to ask......
 

for the full list, as I might find myself owing an aweful lot of beer to an aweful lot of people.

Hmm, "virtually" getting pi##ed, must have it's merits.

Can't say it rings my chimes, but there you go.

(Humble and sincere appologes to Kiflom for beernapping his thread).


CS

Micheal, if you think it is moiré. How come i don't see on my dvx?

Hey guys, i am willing to put some $$$, for any one who can solve this problem. Thx

I would say that the vimeo clip flickering lines are mainly due to scaling and compression artifacts. I downloaded the original AVI file and it is much cleaner.

The original appears to be progressive footage. Is it possible that somewhere during the editing process your NLE has deinterlaced it when it shouldn't have? This will degrade the footage in a similar way too.

Richard