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feklee
Inspiring
May 28, 2011
Question

Live streaming: why two different bit rates?

  • May 28, 2011
  • 1 reply
  • 708 views

The article Live dynamic streaming with Flash Media Server 3.5 mentions two different bit rates for each video size type.

But why? Are these bitrates related to different compression ratios? And if so, why exactly two?

    This topic has been closed for replies.

    1 reply

    Nikhil_Kalyan
    Nikhil_Kalyan
    Participating Frequently
    May 31, 2011

    Hi,

    Thanks for your interest in FMS.

    The bit rates mentioned in the article are only recommended values and hence more than one value(s) are mentioned that are good to use for that particular video size and aspect ratio. The bit rate is not related to the compression ratio and depending on your bandwidth availability/limitations, you can as well use less/more bitrates.

    Can we help you with something else ? Please let us know. Thank you  !

    F
    fekleeAuthor
    Inspiring
    May 31, 2011

    You write: "The bit rate is not related to the compression ratio"

    How is that possible? If the resolution and frame rate are fixed, then how can the bitrate be changed other than by adapting the compression ratio?

    fmeuser
    fmeuser
    Participating Frequently
    May 31, 2011

    Compression ratio is dependant on the bit-rate.

    Higher the bitrate -> Lesser the compression -> Better the quality

    Lesser the bitrate -> Higher the compression -> Not so great quality

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