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The HDMI chip gets only 1440 from the EIP which is then down-scaled to 1280. I'll bet the HDMI chip simply up-scales each field from 540 to 720. Presto -- 1440x1080i to 1280x720p. The FIELD rate becomes the FRAME rate. |
I think there is a huge difference between 576p and 720p. While the vertical resolution may not be that much higher the horizontal gets jumped from 720 up to 1280 which is a lot of extra horizontal detail. Sadly widescreen SD is still limited to 720 pixels (or 768 pixels for full PAL specs). This means widescreen SD ends up having to deal with the same anamorphic softened pixels as 1440 HD is compared to true 1920 HD.
The reason why a lot of 720p shot material looks pretty close to 720x576p material is because most 720p broadcasts are shot with DVCPROHD which only uses 960x720 pixels which is only slightly higher then 720x576p. A high quality camera shooting a nice detailed 1280x720 image will have a lot more horizontal detail (almost double) then 576p could ever have. |
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Plus, is the HDMi port outputting 1920x1080i then? The Cineform codec handles the progressive conversion, so what's the catch, or is there one? As to long-term storage, that has always been a moving target anyway, so we'll just HDD the productions for now, then when the larger capacity disks hit the market in a bit, we'll dup our backups onto that format as well to get us down the road. Hitachi's new 1TB drives will hold plenty, and it looks like they are very reasonably priced. |
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If it is 1920x1080: Is it up-scaling 1440x1080 to 1920x1080? Or, is it getting a direct feed from the EIP? I suspect the first. But, if it gets 1920x1080, then the 720p would be a direct down-scale. |
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Maybe we'll get another V1 so we can use the sync capability for two cams...hmmm... BTW, we really like the V1's layout and handling. This little cam looks like a true winner and seems to bode very well for those of us trying to do much with relatively little (non-profit children's production). Now, if we can just figure out how to do all this when flying our Merlin, we'll be almost there. The crane and dolly are easy, but the Merlin is SO sensitive to anything, it'll take something new to make it usable under this scheme of things. |
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