wiki:FLVs

FLV

FLV (Flash Video) is a proprietary file format used to deliver video over the Internet using Adobe Flash Player (formerly known as Macromedia Flash Player) version 6, 7, 8, or 9. FLV.

FLV files can be created by using various tools, however to get the most of it in your development it is very important that certain specifications be made.

When creating FLV files it is important that the following attributes be correct if your FLV file may is to work as it should.

  • The Dimension.
  • The Frame Rate.
  • Codec

The Dimension

You set the dimension putting into consideration what bandwidth your users have available to them whether its a

cable modem or Dial-up internet connection.

Generally 320 x 240 should be used for high speed internet connection and Dial up its is recommended to use 120 x 90 anything more than this will affect the quality of your FLV file

NB: It is also advice able not to make FLV files bigger than the original file, doing that is recipe for disaster.

The Frame Rate

Most home video cameras create videos in NT SC or PAL format and this have frame rates of 30 fps(frames per

second) and 25 respectively. This specification is overwhelming to the Flash player

Ideally your frame rate should be 15 fps for NT SC and 12 fps for your PAL system.

NB: This could be more depending on if your video as many fast tracks in it, so common sense needs to be applied.

you may have to adjust your dimension, bit rates and all other factors.

Codec

On Mac use Apple Quick time Animation and video codec and On Windows use the uncompressed AVI format

Getting the settings right will affect the final quality of your pictures It is highly recommended to create a quicktime movie using the Video codec or, if the video incorporates an alpha

channel, use the Animation codec with the Color Depth set to Millions +. When it comes to video, experience shows

the QuickTime? format creates far superior results to the WMV and AVI formats.

The properties of an FLV file

*Dimension: 320x240 [ideal]

*Frame rate: () [ This as to be either 15 or 12]

*Audio Codec: ()

*Audio data rate ()

*audio delay ()

*Video codecID :()

*Video Datarate()

For more information on flvs open the URL below

(http://www.adobe.com/designcenter/dialogbox/encode_video_02.html)

Flash Movie Idevice

We have recently changed the flash movie player to Flow player and it appears to work very well with all the FLV files that had been giving problems in the earlier versions. So with the new release 0.22.xx we anticipate that there will be little or no problem with the your FLV files regardless of how it was created

Last modified 10 years ago Last modified on 2009-05-22T06:08:43+09:00