I agree that Dazzle and Marvel are getting better at what they do BUT a board with hardware compression is where it's at for quality.
Ummm ... both the Dazzle DVC II (C-Cube) and Marvel (Zoran MJPEG, I believe) DO use commercially available, dedicated hardware for MPEG-2 compression/encoding. In fact, the C-Cube chip is apparently capable of transcoding MPEG-2 streams in real time, but Dazzle doesn't support it. As for the Marvel, I've actually seen a Celeron 500 (66MHz bus) capture at 704x480 without dropping ANY frames, something I haven't seen or heard of any AIW product doing at that CPU level or power. That said, I still have that question about ATI's hardware support. As for the real-time compression without hardware thing, well, I just tried CinemaCraft's MPEG-2 software encoder and on a test ripped VOB from a DVD it was doing very close to 1:1/real time encoding on a Duron 990.
FYI, the DVC II's problems are not really the hardware's fault, but Dazzle's. First, the DVC II didn't work with older Athlon boards (not sure if it was the AMD 750 or VIA KX133), so instead of testing for compatibility Dazzle stupidly issues a broad disclaimer stating it's not guaranteed to work with ANY Athlon system. Second, it took Dazzle close to a year to release decent software and recording templates. In fact, someone asked Dazzle for VCR-type capabilities from the DVC II - i.e. record/encode MPEG-2 to disk from an input source starting at X time and continue until Y time, then splitting the file and continue recording when the filesize reaches Z mega/gigabytes. Dazzle's response was "It'll never happen." Well, some guy in Germany realized that Dazzle shipped a fairly comprehensive ActiveX control with the DVC II, and programmed a very small utility that does exactly that and works a heck of a lot better than the DVC II's software. I've seen some SVCD clips from a DVC II, and the quality is excellent.
Ummm ... both the Dazzle DVC II (C-Cube) and Marvel (Zoran MJPEG, I believe) DO use commercially available, dedicated hardware for MPEG-2 compression/encoding. In fact, the C-Cube chip is apparently capable of transcoding MPEG-2 streams in real time, but Dazzle doesn't support it. As for the Marvel, I've actually seen a Celeron 500 (66MHz bus) capture at 704x480 without dropping ANY frames, something I haven't seen or heard of any AIW product doing at that CPU level or power. That said, I still have that question about ATI's hardware support. As for the real-time compression without hardware thing, well, I just tried CinemaCraft's MPEG-2 software encoder and on a test ripped VOB from a DVD it was doing very close to 1:1/real time encoding on a Duron 990.
FYI, the DVC II's problems are not really the hardware's fault, but Dazzle's. First, the DVC II didn't work with older Athlon boards (not sure if it was the AMD 750 or VIA KX133), so instead of testing for compatibility Dazzle stupidly issues a broad disclaimer stating it's not guaranteed to work with ANY Athlon system. Second, it took Dazzle close to a year to release decent software and recording templates. In fact, someone asked Dazzle for VCR-type capabilities from the DVC II - i.e. record/encode MPEG-2 to disk from an input source starting at X time and continue until Y time, then splitting the file and continue recording when the filesize reaches Z mega/gigabytes. Dazzle's response was "It'll never happen." Well, some guy in Germany realized that Dazzle shipped a fairly comprehensive ActiveX control with the DVC II, and programmed a very small utility that does exactly that and works a heck of a lot better than the DVC II's software. I've seen some SVCD clips from a DVC II, and the quality is excellent.