Daniel Low
Forum Replies Created
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DVCPro50 uses a colour subsampling of 4:2:2, same as PhotoJPEG at 75%. PhotoJPEG at above 75% is 4:4:4, so much better.
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Personally I’d avoid the colour conversion from 4:2:0 of MPEG-4 to the 4:4:4 of animation and then back to 4:2:0, if at all possible. Try PhotoJPEG at 70% quality instead
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Depends on what you’ll be wanting to use the footage for. Personally I’d capture them to a high quality but efficient codec, usually one that will come with your capture card and leave them in just a digital form on some quality external drives.
No more tape, totally non-linear access, playout to whatever format you need…
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Just use Quicktime Pro – but in all honesty there is no reason why the MPEG-4 version wouldn’t play perfectly, the DV-AVI will be much more of a strain on his system.
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Easy – don’t move anything in and out of a frame in less than a second. One of the reasons why 24p sucks for sports.
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WMV isn’t a problem for mac users at all – all they need is either Windows Media Player or the Flip4mac plugin for QuickTime. Both are free.
You certainly don;t want to go with MPEG-2 – that’s designed for DVD or broadcast, not the web.
You could look at MPEG-1 but it’s so very much out of date. Try MPEG-4 if you want to go with an open standard that has good support on both Mac and PC.
Maybe your best bet is to offer both.
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Did you deinterlace?
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Where appropriate multi-pass encoding results in higher quality output, in software maybe it’s a luxury but using it has helped me produce higher quality that my competitors are able to. And therefore I charge much more.
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That’s the same for any format, player or codec (except maybe Flash); not all the viewers to your site will have the necessary technology to view the clip. That said it maybe nice to include a WMV or Flash version for those Windows users who have a ‘locked-down’ PC or others who are somewhat behind the times!
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50p is obviously twice the frame rate of 25p. Assuming all things are equal 50p is also twice the data rate of 25p.
Therefore one can assume that 50p requires twice the processing power and raw data transfer as 25p would.
That’s not exactly how it is in the real world but its close enough as an illustration.
To improve the performance of his ‘mid-level AMD’ may just require more memory and/or faster hard drives, but it depends what you mean by ‘mid-level AMD’