Re: How to edit MPEG-2?


"Dave Martindale" <davem@xxxxxxxxx> wrote in message
news:diep3t$frg$1@xxxxxxxxxxxxxxxxxx
> "PTravel" <ptravel88-usenet@xxxxxxxxx> writes:
>
>>Mpeg2 is a delivery format, not an editing format. Your camera is not
>>using
>>a hard drive "instead" of tape -- tape-based digital consumer camcorders
>>use
>>miniDV or Digital8, both of which utilize the DV-25 standard.
>
> I do wonder why the hard drive-based camcorders do *not* provide a mode
> where the drive is literally used instead of tape. If the data was
> recorded as an AVI file using a DV codec, it would be absolutely
> indistinguisable from tape in image quality, editability, etc. You'd
> only get a bit more than 2 hours of recording time from a 30 GB disk
> instead of the 5-10 hours you'd get using MPEG2, but that's a tradeoff
> I'd happily make when I'm planning to edit the video (i.e. almost
> always).

I think you answered your own question. At 13.7 gigs an hour, I think the
target demographic for a camera like this would balk. If they took it on
vacation, they'd have to dump video every evening, and watch what they shot
during the day.

>
> It *can't* be difficult for the manufacturers to supply two different
> codecs. The data rate of about 3.5 MB/sec for DV shouldn't be a
> problem. So why don't they do it? Hard drive storage is a great idea
> if you don't care about archiving tapes as backups; why hobble the hard
> drive camcorders in comparison to tape by forcing MPEG?

Camera manufacturers have, unanimously, rejected video quality for their
consumer lines and, instead, focused on gimmicks and gadgets. Personally,
I think it shows contempt for consumers. However, whatever the reason,
quality video is simply unavailable in low-cost consumer products.


>
> Do the manufacturers of these camcorders allow mounting the internal
> disk as removable storage, rather than just "playing back" the video.
> Playback just lets you get the data into a computer at realtime speed,
> while mounting the drive as a Firewire or USB2 disk should allow copying
> data at near drive read speed, which ought to be a couple times faster
> than realtime for AVI/DV data, and 2-4X faster again for MPEG-2 data.
>
> Dave


.

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