MiniDV codec is SO good?

[Guest]

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so i have some video from my MiniDV camera. AFAIK, this video is
1) compressed
2) each frame is compressed separately

so, i have a 60 minutes video which is 12 Gygs

i wonder if there is ANY codec to reduce the size of this video WITHOUT
any quality loss... i guess my desctop CPU [athlon 1400] is far more
powerfull than the one in my sony camcoder, and if some codec
compresses not each frame separately could not i have a smaller AVI
file?

i've tried some codecs from CREATE AVI tool of Pinnacle Studio, but the
produced file [which took HOURS to encode] as even BIGGER than the
original! FK

 

[Guest]

Archived from groups: rec.video.desktop (More info?)

arro239 wrote:
> so i have some video from my MiniDV camera. AFAIK, this video is
> 1) compressed
> 2) each frame is compressed separately
>
> so, i have a 60 minutes video which is 12 Gygs
>
> i wonder if there is ANY codec to reduce the size of this video
> WITHOUT any quality loss...


When you reduce the size of a video, there's a corresponding reduction in
quality. No way around it. Take a 2 hr. video (26 GB) and compress it for
a DVD (4.7 GB) and do an A-B comparison on a good monitor. I guarantee
you'll see a quality loss.

Mike

 

[Guest]

Archived from groups: rec.video.desktop (More info?)

"arro239" wrote ...
> so i have some video from my MiniDV camera. AFAIK, this video is
> 1) compressed

DV25 (DV, miniDV, DVCAM, DVCpro25) is compressed 5:1 by definition.
DV50 (DVCpro50) is compressed about 2.5:1

> 2) each frame is compressed separately

I believe that DV uses BOTH temporal AND spatial compression.

> so, i have a 60 minutes video which is 12 Gygs

~ 13.5GB by my rule of thumb.

> i wonder if there is ANY codec to reduce the size of this video
> WITHOUT any quality loss...

By definition, No.

> i guess my desctop CPU [athlon 1400] is far more powerfull than
> the one in my sony camcoder,

Not necessarily, but it doesn't matter how much horespower (or
time) you have, compression always involves throwing away
some data.