[FFmpeg-user] Recording logitech ultra vison,

[Clément Bœsch]

On Tue, Jun 07, 2011 at 10:33:13AM +0100, Sw at g wrote:
> Hi all,
> 
> I am recording my Logitech Ultra Vison using ffmpeg with the
> following command,
> 
> "ffmpeg -f video4linux2 -i /dev/video0 -s 640x480 -vcodec mpeg4
> -sameq cam_`date +%F_%T`.mp4"
> 
> However the video quality isn't as it's best, if I am using mencoder
> (which I understand isn't maintain any more)  with x264 codec then
> the picture is much clearer and sharp (same size than ffmpeg)
> 
> If I am trying to record the webcam with ffmpeg and libx264 (with
> the -vpre medium option) than the picture quality is the same as
> mpeg4 codec.
> 

You have to find a better profile I guess ; the other reply in the same
thread is more explicit.

> So the question would be, how to have a sharper and clearer image
> the same as using mencoder (see below for the mencoder command line
> for reference)
> 
> (mencoder tv:// -tv
> driver=v4l2:width=800:height=600:fps=15:device=/dev/video0  -ovc
> x264 -nosound -o cam_`date +%F_%T`.avi)
> 
> Also, I would very much like to be able to record the video with the
> time on the bottom corner it, is there such a command?
> 

Check for -vf drawtext.

-- 
Clément B.
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