On Tue, 10 Dec 2002, Javier Hernandez wrote: > I got some DV raw material [Analog Camera --> Canopus Box --> Firewire] > with kino (I know it can be done also with dvgrab). > > I did run that DV raw material with MPlayer in my computer: > - Audio is great aceptable. > - Video quality is not perfect but it is acceptable. > Although when looking at that movie on the TV with the Analog Camera > connected to the TV set, I would say that the quality of video is better; > maybe not much better but some more clear. I guess it is normal or > maybe that is a stupid comparation. > O:-) > > My main doubt: > Can I get a better quality of "Video" than the one > at the DV raw material ?
The video quality from the Canopus units is outstanding. What you're noticing is that computer monitors and televisions are very different in how they display things. A 320 x 240 MPEG that looks really nice on the television will usually look horrid on the computer. You'll see it at higher resolutions, too. The trouble is that tlelevision has no idea of "pixels" like computers do. They operate on an analog signal, which doesn't really have discrete "dots" like a computer picture does. This is good for television -- it results in a smoother picture at lower "resolution", thus taking less signal and processing speed to be watchable. Computers, on the other hand, use discrete pixels -- each "dot" on the screen has its own color, completely unrelated to the other colors around it. (Well, unless you're in HAM mode on an Amiga, but let's not go there.) Monitors are made to show these discrete dots very precisely -- no "bleeding" from one dot to the next. Thus, computers are very good at showing sharp edges, fine detail, and discrete color changes -- exactly the sort of thing televisions are NOT good at. So even if your analog-to-DV conversion is VERY good (and it probably is, with the Canopus), it will probably look more "grainy" on the computer than it did on the television, due to the different display technology. I can tell you this - I've done several hours worth of conversions with the Canopus box, denoised and enocded back to MPEG2 and burned to DVD, and the results frequently look *better* on the television than the original analog sources did (probably due to the denoising and cropping out the "tape noise" at the edges). I wouldn't trade my Canopus box for anything right now. (OK, well, maybe ... :-) -- Robert Kesterson [EMAIL PROTECTED] ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
