On 4/28/05, Jason McLeod <[EMAIL PROTECTED]> wrote: > I found some video guys here at work, who know a few things about > video encoding. > > They where telling me that the NTSC standard is 720x480, although > cable broadcasts don't use that high, it's much closer to 480x320. I > originally had my resolution for capturing set to the max, but I'll > try scaling it down to the true broadcast size, that should save some > space. > > Since I'm using a very weak box to run the Myth backend on, I'd > rather have the size determined while the card is encoding with the > hardware MPEG2 encoder. > > -Jason >
Actually, if I'm not mistaken, changing just the resolution will have little-to-no effect on the size of the files. You must lower the bitrate. Nate > Blog: http://jason.sdf1.net > GPG Fingerprint: > [EMAIL PROTECTED] - A6CC 40B4 99A4 1C08 55A7 BCFC ECDF ED68 115E 5993 > > On 28-Apr-05, at 1:35 PM, Timothy Daniel Hamer wrote: > > > On Thu, 28 Apr 2005, Scott Alfter wrote: > > > > > >> Neil Bird wrote: > >> > >>> I was just about to post this and a related question. I'm > >>> running my > >>> PVR-350 with fairly high (normally) res. PAL settings, and a > >>> bitrate of > >>> ~6200 somethings. I get images of ~2.0-2.2 Gb per hour. > >>> > >>> Now, I just downloaded [bittorrent] an episode of something I > >>> missed. > >>> The AVI's ~364 Mb for the, I guess, ~43 mins., but is, whem played > >>> through MythVideo, of comparable quality to the stuff I record at > >>> 6x the > >>> size! > >>> > >> > >> Those AVIs you downloaded probably aren't using MPEG-2, but > >> instead use some > >> variant or another of MPEG-4. That's why they can deliver the > >> same quality in > >> less space. Comparing MPEG-4 to MPEG-2 is like comparing Ogg > >> Vorbis to MP3. > >> > >> You could transcode from MPEG-2 to MPEG-4 (MythTV will even do > >> this for you), > >> but the transcoded recordings won't be playable through your > >> PVR-350. (That > >> assumes you're using its MPEG-2 decoder; I stopped using mine when > >> I upgraded > >> to an LCD TV and switched from S-video to DVI.) > >> > >> _/_ > >> / v \ Scott Alfter (remove the obvious to send mail) > >> (IIGS( http://alfter.us/ Top-posting! > >> \_^_/ rm -rf /bin/laden >What's the most annoying thing > >> on Usenet? > >> > >> > > > > I noticed the same thing with downloaded files vs. files captured > > from my pvr 150, but even when i use mythtranscode to convert them > > to mpeg-4, i can get downloaded AVI files that look much better and > > are smaller. Should i use one of the external transcoding programs > > instead of mythtranscode? > > _______________________________________________ > > mythtv-users mailing list > > mythtv-users@mythtv.org > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > > > _______________________________________________ > mythtv-users mailing list > mythtv-users@mythtv.org > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > _______________________________________________ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users