bit rate and resolution at
DV Info Net

Go Back   DV Info Net > High Definition Video Acquisition > AVCHD Format Discussion

AVCHD Format Discussion
Inexpensive High Definition H.264 encoding to DVD, Hard Disc or SD Card.

Thread Tools Search this Thread
Old February 4th, 2008, 10:14 AM   #1
Join Date: Jan 2008
Location: Raleigh, NC
Posts: 1
bit rate and resolution

My Sony HDR-SR7 has four options for HD recording quality: XP (with a bit rate of 15 Mbps), HQ (9 Mbps), SP (default, 7 Mbps), or LP (5 Mbps). How do these options correspond to resolution (width and height in pixels)?

All the clips I've shot so far were done at default quality. My video editing software (Final Cut Express 4) says the frame size is 1440x1080, which is the max for this Sony model (although I understand that models coming out later this year will be 1920x1080).

So if the frame size is already maximized, what do you gain from recording at a higher bit rate? Clearly, you lose out on hard drive space at such higher qualities.

Thanks in advance.
Keith Symmers is offline   Reply With Quote
Old February 4th, 2008, 12:24 PM   #2
Inner Circle
Join Date: Feb 2007
Location: Apple Valley CA
Posts: 4,874
while width and height remain the same... the bitrate determines how accurately that field of pixels will be recorded. The lower the bitrate, the more you'll notice macroblocking type artifacts. Basically, the more data/information per frame, the better it will be recorded/reproduced, less data/lower bitrate, the worse the result will look.
Dave Blackhurst is offline   Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > High Definition Video Acquisition > AVCHD Format Discussion

Thread Tools Search this Thread
Search this Thread:

Advanced Search


All times are GMT -6. The time now is 02:28 AM.

DV Info Net -- Real Names, Real People, Real Info!
1998-2021 The Digital Video Information Network