Compression for HD delivery
Hi guys,
I am a bit concerned with my ability to deliver/playback HD footage. Right now, most of my delivery is DVD (easy as I just convert to SD) and web. For web, the sweet-spot for me is to compress to a pretty low res file and use H.264 which gives really really nice results for small file sizes. However, I am reaching the point where I might need to deliver full HD-sized files for some short films. I tried encoding H.264 at 1920x1080 (although for some reason, FCE reports it as 1880x1060 or something odd). I chose a bitrate of 10,000 bps (average) and high quality. OK, so I get an 88M file for my 1.5 min movie (not wretched) but when I try to play it back on a dual 2.0G Mac G5 with a 24" LCD, I dont think I have the horsepower to actually play it at full frame rate -- the footage looks very jerky and disorienting. When I play back the smaller files, they look great. So does anyone have any suggestions on how to encode for great playback on machines with reasonable CPU power? (Or maybe I am just doing something wrong with the encoding) |
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If you check sites like Apple, that's what they're encoding their 1920x1080 downloads at. See http://www.apple.com/quicktime/guide/hd/ |
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I am still a bit baffled by the 1880x1060 weirdness from FCE, but then I am used to having to take a Phd everytime I want to export something that actually looks right. |
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I "found" some more options. Apparently I have 1920x1080 HD and 1920x1080 HD "16:9" It is the 16:9 that gives the odd resolution, the regular HD is OK (but not encoded yet, so I will see) Trying it now with 4500Kbps and key frames set to "auto", but it takes 60 mins to encode just 1.5 mins :( |
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I think my mac is just too slow to play H.264 at those resolutions :( |
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