Actually Sony has crippled some newer D8 camcorders so many of the older ones are better. AFAIR the lowest-end model 140 does not have Hi8 playback nor analog-in or analog to DV passthrough like the previous low-end models did.My source is a rather cheap DV camera (Sony TRV240). On one hand, beingI can go you one cheaper - I've a Sony TRV120 [it's an old Digital8 unit probably no longer made] that was $99 as a refurbished unit :)
The CCD of some newer D8 models is 1/6". Sony just decided to cripple these low end models starting at version 3 (230, 330, etc). Only the high end model (730) has a better (bigger) 1/4" CCD like all the older ones did. I haven't checked which CCD the 740 or 840 use. A bigger "video resolution" CCD should have better low light performance than a smaller megapixel CCD but there may well be other things that affect the performance. (I have an unnEUtered TRV320E with DV- and analog-in and manual white balance re-enabled).
I have also wondered which denoisers I should use for SVCD so this discussion is great!
I'm using mpeg2enc via MediaPipe on the Mac OS X and MediaPipe offers:
- "Temporal Denoiser" (with n, n-1 and n-2 Temporal Weights and a Threshold value) and
- "Noise Filter" (with 2x2, 4x4 and 8x8 analysis depth and Light-Strong Filter strength)
...but I really don't know which one (or both?) and which options I should try with my D8 videos.
Should I use the denoiser before the Scaler?
mpeg2enc -N didn't make much visual difference when I tried it.
BTW, at the moment I'm trying to decide whether to encode the original 720x576 PAL to 352x288, 352x576 or 720x576 XSVCD with 48kHz audio so that I can easily use the MPEG2s on DVDs (those are also DVD resolutions) later or should I just stick to 480x576 SVCD.
I prefer interlaced output but 352x288 must be progressive. On the other hand such a low resolution doesn't get blocky as the higher resolutions tend to do.
352x576 is quite nice but the low horizontal resolution does show in some vertical straight lines as fuzziness.
720x576 is surprisingly good although some moving scenes tend to get blocky easier than using lower resolutions. Maybe a good amount of denoising would make 720x576 the winner?
Progressive output is less blocky than interlaced but I prefer interlacing for its motion smoothness on TV.
--
Matti Haveri <[EMAIL PROTECTED]> <http://www.sjoki.uta.fi/~shmhav/>
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