Compression - how to compress .MOV file

Author

how to compress .MOV file

Mori

2006-03-21, 3:55 am

I have Windows XP. I want to compress a 20 MB .MOV file. In Windows
Explorer, I right-clicked the file and did Send To --> Compressed
(zipped) Folder. The original was 20,660 KB. The compressed file was
20,093 KB. Not terribly impressive.

So how do I compress a .MOV file?

Phil Carmody

2006-03-21, 3:55 am

"Mori" <sdmorito3@yahoo.com> writes:
> I have Windows XP. I want to compress a 20 MB .MOV file. In Windows
> Explorer, I right-clicked the file and did Send To --> Compressed
> (zipped) Folder. The original was 20,660 KB. The compressed file was
> 20,093 KB. Not terribly impressive.

Something's not terribly impressive, and it's not the compression ratio.

> So how do I compress a .MOV file?

What on earth makes you think that it's not already compressed?

Phil
--
What is it: is man only a blunder of God, or God only a blunder of man?
-- Friedrich Nietzsche (1844-1900), The Twilight of the Gods

cr88192

2006-03-21, 3:55 am

"Mori" <sdmorito3@yahoo.com> wrote in message
news:1142913865.523598.28840@i39g2000cwa.googlegroups.com...
>I have Windows XP. I want to compress a 20 MB .MOV file. In Windows
> Explorer, I right-clicked the file and did Send To --> Compressed
> (zipped) Folder. The original was 20,660 KB. The compressed file was
> 20,093 KB. Not terribly impressive.
>
> So how do I compress a .MOV file?
>
convert to another format, with a probably different bitrate.
reencode with a different bitrate.

as for the file itself, not so much can be done, as quite probably the file
is already compressed, further size reduction is likely to cost in terms of
quality.

Jasen Betts

2006-03-21, 7:55 am

On 2006-03-21, Mori <sdmorito3@yahoo.com> wrote:
> I have Windows XP. I want to compress a 20 MB .MOV file. In Windows
> Explorer, I right-clicked the file and did Send To --> Compressed
> (zipped) Folder. The original was 20,660 KB. The compressed file was
> 20,093 KB. Not terribly impressive.
>
> So how do I compress a .MOV file?

it's already compressed to make it smaller you'd probably have to reduce
its quality. and i don't know the details of how to do that.

Bye.
Jasen

Jim Post

2006-03-21, 9:56 pm

Try to compress your zipped folder with OverZip (www.overzip.com),
for slight improvement.
Though, OverZip helps better if you have many files
compressed into one ZIP.

cr88192

2006-03-21, 9:56 pm

"Jim Post" <sergeipre@aport2000.ru> wrote in message
news:1142966983.661976.100010@v46g2000cwv.googlegroups.com...
> Try to compress your zipped folder with OverZip (www.overzip.com),
> for slight improvement.
> Though, OverZip helps better if you have many files
> compressed into one ZIP.
>
still wont help much with a mov file though...

a compressed video stream has virtually no redundancy (what little it has is
largely introduced, headers, padding, structural tags, ...). as a result,
using a more efficient zip tool will not help (nor will most all forms of
data compression).

about the only real option in this case is to reencode, or live with the
size.

Jasen Betts

2006-03-22, 7:56 am

On 2006-03-21, Jim Post <sergeipre@aport2000.ru> wrote:
> Try to compress your zipped folder with OverZip (www.overzip.com),
> for slight improvement.
> Though, OverZip helps better if you have many files
> compressed into one ZIP.

even regular zip can help there, I had one zip file with many PCX images that
shrunk over 50% by zipping it again.

Bye.
Jasen

Jasen Betts

2006-03-24, 7:55 am

On 2006-03-23, <talthen.z-serwera.o2@nospam.pl> <talthen.z-serwera.o2@nospam.pl> wrote:
> "Jasen Betts" <jasen@free.net.nz>
>
> Perhaps your zip file was created using "store" method (no compression at
> all). You can compress such file more, because it looks almost the same as
> unpacked pcx files and pcx files can be compressed, because they use very
> simple compression (rle as I remember).

the PCX files were small and all had the same palette thus even "compressed"
there was lots of repeated patterns.

--

Bye.
Jasen

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