Barry_Green
Moderator
AVC-HD is a scalable codec -- you can choose anywhere from about 6 megabits on up to about 24 megabits, depending on what the manufacturers allow. For some reason (which may be due to encoder chip technology, I'm not sure) they've currently limited it to about 13 megabits max.vsansal said:How did you make this bitrate match?
Okay, first of all -- you're not comparing a format against a format. You're comparing so many different variables there that it's almost impossible to specify what difference is due to what -- you're having CCD compared against CMOS, Sony HDV compared against Canon HDV, etc.The review from camcorderinfo.com describes the performance "Compared to HDV, it underperforms just like the UX1. The Sony HDR-HC3 had less noise and a slightly brighter color pallet. The Canon HV10 remains the best picture in bright light of any consumer HD camcorder so far – bold, beautiful colors and hardly a hint of noise."
I am not talking about the camera heads. So far there's no camera head worthy of the format. I'm talking solely about the recording format. When I was at Government Video Expo, the camera engineers at Panasonic said, and those who saw the screening of 8-megabit AVC-HD at earlier shows agreed, it is a toe-to-toe-match for 25-megabits of HDV.
Not so. First, SimplyDV's review shows the AVC-HD Panasonic smoking the Sony easily. But second, you're still comparing different formats and different technologies. I contend that if someone produced a camcorder that records to HDV, and the exact same camcorder in an AVC-HD version, the AVC-HD version would be noticeably better. I expect that Canon will actually do that, since they're a member of both the AVC-HD and HDV consortium.So with 15Mbps bitrate AVC-HD obviously underperforms compared to HDV.
Yes there are workflow issues -- no major editing program supports it yet. But when JVC launched the HD1, no major editing program supported it until over two years after release! At least with AVC-HD several of the major companies have joined the coalition even before it launched; Adobe and Canopus and Ulead and Sony Vegas are all part of it. Canopus already has a solution out that lets you edit in EDIUS, and Sony's going to have Vegas out "this Spring" with an update that supports AVC-HD.So if you are right than there are major workflow issues with AVC-HD and what I don't understand is why are they rushing a technology that is still not ready.
Not possible -- 25 megabits of HDV vs. 24 megabits of AVC-HD? AVC would blow it away. I would instead think that they aren't marketing the higher bandwidth version either a) because they don't have a camera head that would make that much of a difference, or b) because they don't have an encoding chip that can handle that higher bandwidth effectively yet.Everyone is expecting to see a 24Mbps AVC-HD camcorder to compare it to HDV but maybe the reason they are not marketing a 24Mbps AVC-HD camcorder is because HDV can still perform better.