In which case should I use DV-type 2

Erik1967 · Post by **Erik1967** » Sun Oct 01, 2006 7:48 pm

Is there any reason to use DV-type 2 for capturing video? If so, what reason could there be?
Most of you don't seem to recommend it, but I haven't found a reason. So please tell me!

Trevor Andrew · Post by **Trevor Andrew** » Sun Oct 01, 2006 8:49 pm

Hi

Have a read at this quote from ulead from:-

http://www.ulead.com/learning/video1/page1.htm

DV captured by Firewire is stored in AVI files (when using Microsoft Windows). There are two types, Type-1 and Type-2.

An AVI file can contain multiple streams, usually one video and one audio. DV is a data stream that itself contains video and audio. In a Type-1 AVI, the whole DV stream is stored unmodified as one AVI stream. In a Type-2 AVI the DV stream is split into separate video and audio data, which are stored as two streams in the AVI.

The advantage of Type-1 is that the DV data does not need to be processed, and is stored in its exact original format. The advantage of Type-2 is that it is compatible with video software that is not specially written to recognize and process Type-1 files.

Hope this Helps

Trevor

Post by **Ken Berry** » Sun Oct 01, 2006 10:36 pm

And, with apologies to Trevor, to explain his last cryptic remark a little. There are various programs, usually at the top end of the market, which only capture using Type 2 DV Encoder (though they can edit already captured Type 1). Adobe Premiere Pro is one such program. However, I think there may even be programs which cannot deal with Type 1 at all, though I think you will not have to worry about these as they are highly specialised...

The basic problem for many people is that their computers don't have the extra grunt needed for the extra processing required in a Type 2 capture, as Trevor has said. If the computer is under-resourced, a Type 2 capture typically will have distorted or broken audio and/or jerky video. Since type 1 'captures' in a single stream exactly what is on your camera, it imposes absolutely no extra resource demands on your computer, and capture is (usually) very smooth.

Jerry Jones · Post by **Jerry Jones** » Mon Oct 02, 2006 2:10 am

When that was written, certain compositing programs -- such as Adobe After Effects -- that historically did not support Type 1 DV.

It's not a big issue -- at any rate -- because you can convert Type 1 DV to be Type 2 DV without any quality loss.

Jerry Jones
http://www.jonesgroup.net

Erik1967 · Post by **Erik1967** » Mon Oct 02, 2006 8:27 am

Thanks for all the replies. I hoped DV-type 2 would get me better video quality, but this doesn't seem to be the case. So I will continue to use DV-type 1, the format I've used up to now.