Hallo > I'm still here with a question about lost frames. Stated that I probably > need a signal stabilizer or such, what is the influence of number and > size of mjpeg buffers on lost frames? Do I get more lost frames with > more and bigger buffers? I would think so, but my experience is really > puzzling me. And since I'm working with problematic tapes and equipment, > it's hard for me to clearly see how lost frames depends on buffers > number and size.
The problem you have is that the video decoder IC can't sync any more on the video signal. And produces because of that a lost frame/field, or stops recording. The jpeg buffers come into: when the frame was converted from analog to digital, and when converted to jpeg. 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. > Sorry if that's a trivial question! > > Best regards. > > PS > It would be nice to have some hints about buffers in the howto, which > just says "if you want you can play with...", but it doesn't say how. 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. The size of the buffer does not change anything for the analog recording part. auf hoffentlich bald, Berni the Chaos of Woodquarter Email: [EMAIL PROTECTED] www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------------------------- 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
