Los Angeles, CA October, 2005 Video Tape Library, the world’s first video tape library, announces a new site.
* * *
Bitrate is a term frequently used to describe the quantity (size) that one second of video or audio consumes in bits (not bytes). Another term used to describe file size is data rate. Data rate describes the same quantity, but typically uses bytes as a measurement.
* * *
To email someone a link to a clip for review, simply select “Email this clip” from the clip info page. This link is on the navigation on the left side of the page. The clip info page can be reached simply by clicking on the thumbnail for a given clip.
Alternatively, you can email a group of clips by first creating a bin, adding clips to it, and selecting “Email this bin” from the navigation on the left side of the page.
In both cases, the recipients receive an email from you (your email address is the reply to). We do not keep the recipients email addresses. If you change the contents of the bin, the recipients will see the changes, since only a link is sent.
You must be a registered user to take advantage of this service.
* * *
Drop Frame Timecode Format
* * *
Non-Drop Frame Timecode Format
* * *
Video Timecode
* * *
A recorded video image consists of horizontal scan lines, with the number of scan lines ultimately determining the resolution, or quality, of the video image. Rapidly scanning these lines across the display, starting at the top of the screen and moving to bottom, produces each frame of the video image. Instead of displaying the scan lines as two alternating fields (interlacing), progressive scan allows the lines to be displayed sequentially, meaning that both odd and even numbered scan lines are displayed in numerical sequence producing a complete frame of video.
* * *
A recorded video image consists of horizontal scan lines, with the number of scan lines ultimately determining the resolution, or quality, of the video image. Rapidly scanning these lines across the display, starting at the top of the screen and moving to bottom, produces each frame of the video image. Interlacing the video image is a technique where all the scan lines are split into two fields. The first field consists of all of the odd numbered (or even numbered) displayed lines. The second field consists of all the even numbered (or odd numbered) lines. As these lines interface each other, a complete frame of video is displayed. Therefore, a 30 frame/second interlaced video image would contain 60 fields/second. The first displayed field (whether odd or even) is called the field dominance.
* * *
Codec stands for Coder/Decoder and is a software or hardware driver that allows the computer system to play or encode an audio or video file. These files can then be shared and played back on any computer system that has the Codec installed/loaded. An advantage to using a Codec is that the audio/video files can be compressed, significantly shrinking the file size for efficient distribution. QuickTime and Windows media formats contain various Codecs for video and audio playback. Additional Codecs can be added for additional playback compatibility. Common Codecs includes (lossy) MPEG1,2, and 4, DV 25, 50, 100 and (loseless) uncompressed.
* * *
The wide-screen picture format is intended to provide a more realistic and compelling visual presentation over the traditional 4:3 television aspect ratio. A wide-screen display is commonly referred to as a “16 by 9” format, meaning that the picture is 16 arbitrary units wide by nine units high. By contrast, a conventional display is 4 units wide by 3 units high, or “4 by 3.” Thus, the 16:9 display provides a wider image area that more closely matches the relative dimensions, or aspect ratio, of the cinema.
* * *
About Us