wjkotze Posted November 19, 2015 Share Posted November 19, 2015 Does anybody know what the maximum theoretical bitrate through the hdmi port is for the Sony A7RII. Gary Friedman makes the following statement in his A7RII book:"Yes, you can record 4K movies on your internal memory card, but the camera applies some compression to these files in order to allow more footage to fit on a card. If you have an external 4K recorder attached to the camera's HDMI port, however, you can tell the camera to save it as uncompressed 4K video, with a bitrate estimated to be 147 Mbps. (Compare this to the available bit rates of 100M available to record on the memory card, which frankly is still pretty good. But you’re a purist; otherwise you wouldn’t even be reading this.)"I have no idea where the figure of 147Mbps comes from. Since so many aspects of the Sony cameras are undocumented it is difficult to verify this statement. Can anybody help ? Quote Link to comment Share on other sites More sharing options...
Don Kotlos Posted November 19, 2015 Share Posted November 19, 2015 He is just ignorant. The bitrate through the hdmi cable for 24p 4:2:2 8bit 4k is ~2.4Gbit/sec (pixels*3/2*8bit*24frames). That is uncompressed data. The recorder will do the compression and that will determine the file bitrate. Quote Link to comment Share on other sites More sharing options...
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