Mark Weiss
Second Officer
United States
Offline
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Saw this explanation in the Adobe forums. Long GOP footage is not all the same! "That is all very long-GOP media, which rags the crud out of the CPU/RAM/cores/threads subsystems. So adding in a ton of RAM is actually the best thing you could do. The cameras and their highly specialized chips that create/write that media record on a complete "I" frame every 15 to 30 ... or for some drones ... 120 frames apart. In-between the record a matrix-based dataset of the pixels that have changed since the last I-frame, will change before the next, or ... both. Now there are even partial I-frames. Which is how they extend it up to 120 frames for complete I-frames. The computer has to create the I-frames & store them, pull up data-sets, recall the I-frames & calculate the in-between p & b frames. Store those as well as pass them onto the video system, create the next frame for the video. On & on. I know colorists with massive rigs who don't even think once about working 6k RED & Arri media. But as soon as they see long-GOP stuff, that gets transcoded to replace the original media on the sequence they're going to work." |
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