On Tue, 24 Aug 2004, Anne Wilson wrote: > It isn't that I de-interlaced. I wanted a series of 5-second-ish stills > pulled from the main video - a sort of summary to pull things together > instead of the abrupt ending. I started each of these from a single frame > pulled from the main recording. > > Since this project is very much a learning experience I'm quite prepared to do > the whole lot again. Would that be a matter of adding -I t -L 1 to jpeg2yuv?
Yes "-I t" if the rest of the video is top-field-first (check with lavinfo), and "-L 1" if the jpeg is an interleaved frame, not one field after the other. I seldom use jpeg2yuv, so I am copying from the manpage. (ppmtoy4m is the way to go, but I digress :) > > > > Or is it maybe that I didn't get a good quality sound grab in the > > > first place? > > > > I am not sure I understand. You mean audio quality? > > > Yes - I was wondering whether I could have got a faster sampling rate or > something, to make it less of a gap. Sorry, I am missing here something. Which gap ? > If I re-create all the avis in an interlaced mode, will the blends > automatically be interlaced? Generally blending is a pixel-wise operation so interlacing should not be affected. In particular, if you are using transit.flt to generate the transition, then yes interlacing will be preserved. > Now there's another question. The main avis are in 768x576, whereas I want > 720x576. I was expecting to use yuvscaler just prior to encoding. Of course Out of curiosity, how did you end up with a 768x576 interlaced PAL avi? > I had used yuvscaler on the coda, so that I could check that it was working. > I guess that it would be better to take it on trust and then convert them all > at the same time when encoding? I think so. > > Sorry for so many questions, but I am trying to get the concepts clear. And > thanks to both you and Steven for clarifying so many things. You are welcome! Selva ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
