[MEncoder-users] Re: Re: help encoding jpeg frames to video with soundtrack

[Ken and Timi Cecka]

RC wrote:

> On Wed, 19 Apr 2006 19:08:01 -0700
> Ken and Timi Cecka <ceckak at alumni.washington.edu> wrote:
> 
>> Increasing the bitrate seems to help with the blockiness, but I can't
>> figure out how to get rid of the orange streaks.  Here's an example:
>> 
>> original frame: http://k-n-t.homeip.net/tmp/10007.jpg
>> mplayer screenshot: http://k-n-t.homeip.net/tmp/encoded.jpg
> 
> You're rescaling that to dimentions which aren't even multiples of 16.
> The way most video codecs work, they really need to be.  -vf cropdetect
> automatically rounds down to the nearest dimentions divisible by
> 16, and -vf scale has an option to round the dimentions to the nearest
> value divisible by 16.

Images are 480x640, both of which are divisible by 16 (or am I
misunderstanding?).  The screenshot (encoded.jpg) is a little larger
because it includes the window decorations, but the vido frames are all
480x640.