U.S. CitiesCity-Data Forum Index
Go Back   City-Data Forum > General Forums > Science and Technology > Computers
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
Old 01-14-2009, 10:24 AM
1 posts, read 3,881 times
Reputation: 10


Why is more disk space used when recording from VHS to hard drive verses recording from live TV; even though recording times are equal? Recording through composite video cables to plug in TV tuner.

Last edited by sds7762; 01-14-2009 at 10:46 AM..
Reply With Quote Quick reply to this message

Old 01-14-2009, 01:02 PM
Location: Somewhere in northern Alabama
18,530 posts, read 55,444,914 times
Reputation: 32227
It is possible the tv signal was optimized through a compression algorithm that made the colors more blocky, or took out some detail.
Reply With Quote Quick reply to this message
Old 01-14-2009, 10:11 PM
40,185 posts, read 41,790,512 times
Reputation: 16741
The size of video is determined by the bitrate and the bitrate alone. For example the DV format has a set bitrate of about 25 megabits/s and requires approx 13.5 GB's of space for one hour.

What bitrate a video may be is determined by a few factors most notably.

  • Codec used, some codecs compress better than others
  • Resolution, the higher the resolution the more bitrate you need.
For example to the average eye the following formats at a resolution of 720X480 and one hour of footage would appear to look almost identical:

Uncompressed: approx 60 GB
DV: 13.5 GB
DVD (MPEG2): Varies, average bitrate used in Hollywood movie is 6 megabit/s which needs about 4GB per hour.
WMV : Varies as well but to achieve quality comparable to DVD you're looking at about 1GB an hour.

So to answer your question it really depends on the bitrate you are using.

What codec and bitrate to choose depends on the what you intend to do with the video and the hardware you are using.
Reply With Quote Quick reply to this message
Old 06-15-2009, 06:32 AM
10,752 posts, read 18,003,358 times
Reputation: 10244
VHS to Computer Transfer[/url]You are likely to
have the boxes of VHS tapes that might contain different events of your life, exclusive
musical gigs filmed or some other incredible things you witnessed years ago. It's time to
breathe new life to them and bring them up to date. The idea is to capture your video using
AVS Video Recorder first and then convert and burn it onto DVD with the help of AVS Video

reported as SPAM
Reply With Quote Quick reply to this message
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.

Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.

Please update this thread with any new information or opinions. This open thread is still read by thousands of people, so we encourage all additional points of view.

Quick Reply

Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > General Forums > Science and Technology > Computers
Follow City-Data.com founder on our Forum or

All times are GMT -6. The time now is 12:00 PM.

© 2005-2019, Advameg, Inc. · Please obey Forum Rules · Terms of Use and Privacy Policy · Bug Bounty

City-Data.com - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 - Top