Re: [mythtv-users] 68% filesize increase after transcode!

Sat, 24 Sep 2005 21:52:17 -0700

Dave, I tried transcoding the same episode to MPEG4 and it came out 40% larger than the original MPEG2 transmission.  I don't know why anyone would use these methods if they want to keep their videos the same dimensions as they are broadcast, since it looks like they actually ballon in size instead of shrink. :(  I guess if I was scaling them down as well I'd see a size decrease but is it worth it?

Both the 68% increase and 40% increase were seen using the default settings for both RTJPEG and MPEG4 screen settings.

Are you using the default settings?

Thanks,
-Greg

On 9/24/05, Dave Sherohman <[EMAIL PROTECTED]> wrote:
When I first set up transcoding, I went with RTjpeg since it was the
default and I saw no significant change in the size of my programs -
about 2.1G/hour before and 1.9G/hour after.  Then I tried mpeg4 and
(with the default settings) that got me 750-800M/hour.  So I'd say
that, if the quality is acceptable to you, mpeg4 definitely looks
like the way to go.

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