Banding

[Rollason]

I have imported video, all at the same time, and have edited it. I have found that here and there through the edited video I have banding of about 5mms. on each side of the screen. All the video was imported in one go. The preferences are:
24 bit 720x576 4:3
DV Audio - PAL
Format : Microsoft AVI files
Saved as : Coral Video Studio 12 (VSP)
I would appreciate it if someone could advise me how to remove this banding, preferably without degrading the video.
At the same time, as this is the first video I have attempted to burn to DVD, how do I render before burning or is this done automatically on using the Share feature?
Many thanks for any help that's forthcoming.

[Ken Berry]

First, depending on your TV, it may not matter if you leave that banding as it is. It is normal in some older types of video, particularly analogue video which has been captured digitally. And on the older CRT-type TVs, it is in what is called the 'overscan' area (normally about 10% around all the edges of the video which is simply not seen when the video plays on the TV. However, with more modern flat screen TVs, you might actually see it.

So then you use the Crop feature.

As for rendering, yes, you do your editing, then choose Share > Create Video File -- and if you are intending to produce a DVD, and if your project is an hour or less long, then simply choose 'DVD' as the output type. This will produce a DVD-compatible mpeg-2, which you then burn to disc in a separate step -- Share > Create Disc > DVD. You insert your new mpeg-2, build your menu, then burn.

If your project is longer than one hour, then you would need to choose Share > Create Video File > Custom, and in the dialogue box which appears, you would need to vary the bitrate downwards e.g. for a 90 minute project, you would use a bit rate of around 6000 kbps, and for a 2 hour project, around 4000 kbps. This latter will only give you average quality, however, and anything lower than that will see the quality drop off dramatically.

[Trevor Andrew]

Hi Rollason

Are you saying that you can see black vertical bars left and right when viewing the preview screen?

Just a few other things to check.

Your project properties, by default they should use Pal not Ntsc. (just in case you missed the selection when you installed VS)

Your project properties should match the video files properties.

Similar to:-
PAL (25 fps)
Microsoft AVI files
24 bits, 720 x 576, 4:3, 25 fps
Lower Field First
DV Video Encoder -- type 1
DV Audio -- PAL, 48.000 kHz, 16 Bit, Stereo

Make sure that ¡¥Perform Non-Pixel Rendering is selected.

[Rollason]

Thanks Ken and Trevor. I appreciate the information.
Roy.