[FFmpeg-user] set image width only?

[Mark Himsley]

On 07/09/2011 21:23, lovelove wrote:
> Hi. Sorry for being a newbie, but I have looked everywhere in
> http://ffmpeg.org/ffmpeg-doc.html and only found *-s WxH*, but how can I
> /set the width/ e.g. to 400 /*without specifying the height*/ (which FFmpeg
> should determine itself based on the aspect ratio)? (I'm outputting still
> images). Many thanks.

You missed this part of ffmpeg-doc.html

http://ffmpeg.org/ffmpeg-doc.html#SEC89

-- 
Mark