On Fri, Nov 23, 2001 at 04:35:53PM +0000, Stephen Davies wrote: > > > On Fri, 23 Nov 2001 linguist-v4l@xxxxxxxxxxxxx wrote: > > > Well, I've gotten to my goal, I can now record with ffmpeg in one > > window, and play back time shifted in another window. That's > > looking good. Except that the video is not looking good. It's > > got alot of what I take to be compression effects ... things look > > like big squares ... > > You need a higher bit rate. Try somewhere like 2000-4000 kbits/sec for > 352x288 type resolution, 4000-6000 kbits/sec for 720x576. Thanks, that really cleaned me up. I ended up specifying a bit rate of 5000 with a size of 640x480, which turns out very nicely. Oddly enough, I seem to get decent audio sync with 640x400, but the aspect ratio seems wrong. at 640x480, I get the right aspect ratio, and no video sync. Think I'll try NVRec, if I can get it to compile. > > > The is captured with the default options of ffmpeg, I've > > tried ofthers, but none of them seem to be able to sync the audio > > and video. > > > So what format would you guys use, if you had the following > > requirements: > > > > 1) Cheap to decompress (300Mhz cyrus) > > 2) Expense of compression irrelevent (2 1.2GHZ Athalons) > > 3) Able to fit through a 100Mbit ethernet pipe > > 4) As close to lossless as possible. > > > > I guess it can be done, 'cause I'm told that with TIVO, you get > > good quality video. What do you think? > > Well - I use mpeg1, but you must have good input video quality and have to > accept that you need an adequate bit rate. > > If I'm keeping stuff I recompress into Divx4 - mencoder (part of > mplayer) is working well for me. Shrinks my files to 1/3rd original size, > but Divx compression is much much CPU heavier than mpeg1. > > Steve > > > > > _______________________________________________ > Video4linux-list mailing list > Video4linux-list@xxxxxxxxxx > https://listman.redhat.com/mailman/listinfo/video4linux-list
