On Mon, Mar 21, 2005 at 11:18:36AM -0800, Steven M. Schultz wrote: > > > On Mon, 21 Mar 2005, Richard Ellis wrote: > > > What you are likely seeing there is the limits of the accuracy of > > the ADC of whatever encoded the video. I.e., ADC noise, which > > will > > Not really - unless Canopus' quality took a huge drop. Note the > rather huge percentages - it's not just a little ripple, but is > several percent.
Do you have any hard and fast documentation on the resolution / error rate / tolerance on the Canopus ADC converter? Otherwise, for a consumer / pro-sumer level device, a couple percent error rate I'd think wouldn't be seen as too big an error rate. Standard discrete analog (resistors/etc.) electronic component tolerances are 20% (roughly analogous to "error rate") unless you go out of your way to order the tighter tolerance items (10% and 5%, and at correspondingly higher prices). > > Well, if the source "tape" is VHS, then the system has taken an > > Nope - from laserdisc in this case. If the movie wasn't > 'remastered' or 'restored' and was made from a faded/discolored > film then some correction/enhancement really helps. Could some of the "noise" actually be from the laser disk capturing some of the film grain? ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
