Date: Sat, 11 Apr 1998 23:14:03 -0700 (PDT) From: Donald Burr <dburr@POBoxes.com> To: Chris Csanady <ccsanady@friley585.res.iastate.edu> Cc: freebsd-multimedia@FreeBSD.ORG Subject: RE: Bt848 questions... Message-ID: <XFMail.980411231403.dburr@POBoxes.com> In-Reply-To: <199804120450.XAA02189@friley585.res.iastate.edu>
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-----BEGIN PGP SIGNED MESSAGE----- My secret spy satellite informs me that on 12-Apr-98, Chris Csanady wrote: > I have been interested in getting a video capture/tv tuner card, and > from the list archives it seems the Bt848 cards are the most popular. >>From the archives and web page though, it seems there are a few details > that I am confused about. > > How exactly is the video rendered into windows, and how does the scaling > work? Does the direct video allow for the graphics card to do the > scaling? The video is pushed directly to the graphics card over the PCI bus, via memory copying (i.e. the video is cpied directly into the display memory on your PCI video card). The card scales the image appropriately. > I usually use 1600x1200, and would rather the video consume more than a > 4x3" area. :) Also, I have a 2x133 Pentium with a Millenium--if it does > scale to very high resolutions, can I still expect a frame rate of > > 24fps? Not sure about this. I can tell you that I am running at 1280x1024 and I have my window scaled to take up about 1/4 of the screen, and I still get very good performance (close to, if not 30fps). > Any comments on the relative quality of specific brands? I think they're all mostly alike. I bought an el-cheapo clone and it's working nicely for me (it was incompatible with my el-cheapo video card, but once I upgraded to an ATI Mach64, it works great now). > As an aside, I am also looking for a new sound card. Is there any real > audible difference in sound quality between the SB16 WaveEffects and > AWE64? > I am only interested in audio playback/recording, etc. I'd hate to > shell > out any more money for an ISA card than I have to. :\ I believe that the WavEffects is not a Wavetable card (or does software-based wavetable only, which is useless for BSD), whereas the Awe64 is a hardware-wavetable device. (Soemone please correct me if I'm wrong.) This means that playing MIDI files will sound much better on the Awe64, because it will use actual recorded samples of the appropriate musical instruments, instead of trying to (badly) synthesize them. The quality of all other operations (e.g. playing WAV files, audio from the TV capture card, etc.) will not be noticably different between teh two. - --- Donald Burr <dburr@POBoxes.com> - Ask me for my PGP key | PGP: Your WWW HomePage: http://DonaldBurr.base.org/ ICQ #1347455 | right to Address: P.O. Box 91212, Santa Barbara, CA 93190-1212 | 'Net privacy. Phone: (805) 957-9666 FAX: (800) 492-5954 | USE IT. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBNTBbq/jpixuAwagxAQHgMgP9H50PjtRRh4GbYcNoPXTzQQvUtNX5/Q7+ Dx1bW8yw4srEyig8XG+UR+Z4ig+wEfJWkr9Z08wyV10oVGLH7EJWScbBT9zF27Xp 8NuLYHaTtvmY9mvHr5XCWxLMCF76ixbTVHe6zfRdglTVIOXUqi8yWJ7PQ5y4SQI2 QkYjFkJHzvQ= =V/e+ -----END PGP SIGNATURE----- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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