On Sat, 14 Oct 2006 07:07:39 +0200
Bernhard Praschinger <[EMAIL PROTECTED]> wrote:

> The buffers are a cache for the system. Normaly lavrec can store up to
> 32 buffer befor they are written to disk. If you have a "slow" disk
> increasing the buffers (-n/--mjpeg-buffers) might be a good idea. You
> could also try than to use the  --file-flush option.

One system I use I had to up the buffer count on and set file flush to once a 
second, or I would either run out of buffers or hose the recording because the 
disk controller wasn't fast enough to save all buffers in time. Since then, 
I've replaced the controller.

> The buffer size (-b/--mjpeg-buffer-size) can be changed if you have not
> to much memory, and want to use more buffers. Them howto also say that:
> value should be at least big enough that one frame fits in it.

Worth noting is that -b overrides -q if there's a conflict. The very first 
versions of lavrec, if it even was called lavrec back then, had no -q, only a 
-b. One could emulate the old behaviour by setting q to 100, and then limit the 
actual quality with b. By default, the buffers are big enough for a quality 
setting of 100, but if you want more buffers and don't want to use memory 
enough for 100 % quality for each of them, their size can be limited with -b.

/Sam

-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
Mjpeg-users mailing list
Mjpeg-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mjpeg-users

Reply via email to