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Off the wall HD questions

1038 Views 3 Replies 3 Participants Last post by  DaveKennett
OK well I've learned a lot about HD Camcorders over the past few years, but I just remembered some things people have told me in the past.


1. Camcorders recording to miniDV cassettes will get a better picture simply because they don't compress the video at all. Does this apply to camcorders now, more particularly, the hd camcorders. Most of the time the only difference i've seen was the lines of resolution or something simple like that. Now it seems that more people are looking at Hard Drive camcorders, which, at the time I heard that statement, were the worst at overcompressing the video.


2. This one may be way off but just to clear it up, I was also told that consumer HD camcorders don't actually have the capability to RECORD in HD, but they do more of an UPCONVERSION to HD.


That's all I've got for now, but I may have more later. Also to anyone else, feel free to add to these random questions that aren't in the other threads.
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Quote:
Originally Posted by Meecrob /forum/post/12872274


1. Camcorders recording to miniDV cassettes will get a better picture simply because they don't compress the video at all. Does this apply to camcorders now, more particularly, the hd camcorders. Most of the time the only difference i've seen was the lines of resolution or something simple like that. Now it seems that more people are looking at Hard Drive camcorders, which, at the time I heard that statement, were the worst at overcompressing the video.

wrong. HDV still uses 25 Mbps MPEG2 compression.

Quote:
Originally Posted by Meecrob /forum/post/12872274


2. This one may be way off but just to clear it up, I was also told that consumer HD camcorders don't actually have the capability to RECORD in HD, but they do more of an UPCONVERSION to HD.

wrong. Not all HD camcorder record in HD (such as Canon TX1), but a lot of them are (such as Canon HV20).
cool, thanks for clearing that up for me.
Actually, 25Mb/s DV (standard def) is compressed as well. It's sort of a motion JPEG. Each individual frame is compressed independantly. MPEG2 compresses much more efficiently, and AVCHD even more efficiently. This is accomplished by also relying on the similarity of adjacent frames.


Dave
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