Charles Simonson
Forum Replies Created
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1.) You could try tweaking, but depending on the codec and source, you might not be able to squeeze much more out of it. Make sure you have two-pass and VBR selected.
2.) You are correct in that the “medium” could be left out if necessary. You certainly want to have both a “high” and “low” quality version available, and medium is generally there for dial-up users who want something better than the low version, but don’t want to spend the time to download the high version.
3.) Yes, I would recommend deinterlacing.
4.) At 24Kbps, the largest I would go is a total of under 80000 pixels (W x H). You could bump that up to around 100000 total pixels if you were to use a bit rate around 35 – 40Kbps (~300kbps).
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Maybe you could post a link for the wmv file for us to test? Otherwise, it sounds like there might be a bug in F4M.
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QT Pro can export WMVs if you have one of the F4M licenses registered on your machine. If just using the free decoder, then QT Pro will likely run into issues. You need at least the “WMV Player Pro” version to be able to export from QT Pro. One installed, make sure you check the video and audio export boxes (I would suggest Uncompressed 44.1 or 48KHz for the audio and either an uncompressed codec or the Photo-JPEG codec for video) and the outputted movie should be good.
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Yeah, it sounds like he is only running the F4M free version, in which case you will probably run into the demuxing issue if trying to use it as a source in an app other than QT.
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Why didn’t you just try QT Pro? If the audio and video were both accurately decoded by QT Player, then exporting shouldn’t have been an issue.
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I would also ask him what application he plans to use for encoding. For instance, if it is Squeeze, then it may be best to preprocess everything on your end before sending the sources to the encoder. Mostly this is because Squeeze has a terrible scaling engine IMO compared to AFX. In such case you should resize to square pixels and deinterlace if necessary. And I would try to keep the audio stereo if the audio is important to your work.
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Hmmm. Roger (chief developer of BitVice) is usually very responsive. Have you tried the BitVice forums? I know he spends quite a bit of time on there.
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Right, for an intermediate format and backhaul, MPEG-2 is widely used, most commonly at 50Mbps, but I have seen 25Mbps as well. I didn’t take that Chris was looking to do an encode for this purpose though, as you generally wouldn’t want to use a “desktop” encoder for this process. Most broadcasters I know would prefer a DVCPRO tape over an MPEG delivered on DVD or HDD.
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End to end result differences aren’t much, but Popwire’s has a few more options, is $50 cheaper, and is about 10x faster on a Quad G5.
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WVC1 (Windows Media 9 Advanced Profile SMPTE-421M) and H.264 (QT)are really your only other options for better quality at lower bitrates. AfterEffects can access each I believe.