[MPlayer-dev-eng] vo development and swscaler

[compn]

On Mon, 30 Mar 2009 19:51:07 +0200, Reimar Döffinger wrote:
>On Mon, Mar 30, 2009 at 06:06:50PM +0100, Samuel Garcia wrote:
>> However, if I try to scale down a video, say from 32:64 to 16:32, I get 
>> wierd results from the colors. For example, a black screen with a red 
>> line down it, scales down to a smudged white line. It is as if the 
>> swscaler does not understand the color space correctly.
>
>Please be more specific. At least missing information:
>1) the source colourspace (-v might help finding out)
>2) what does "a red line down it"?
>3) how do you know the line is red? In particular since with YV12
>colourspace it is impossible to have a single line with a specific
>colour, since the colour is given always for two lines together.

i think he means his video is of a red line, which, when scaled, turns
into an off-white line.

input and output avi sample files (with mplayer/mencoder lines) would
be nice, if you can.

-compn