Tuesday, July 14, 2015

Flash video


  • Flash video is Digital container format
  • Flash Video may be embedded in SWF
  • SWF is acronym for Small Web Format
  • FLV and F4V are Flash Video
  • F4V is based on ISO base media file format
  • F4V started from Flash Player 9 update 3
  • FLV and F4V are supported in Adobe Flash Player
  • FLV was originally developed by Macromedia
  • Flash Video uses RTMP
  • RTMP is acronym for Real Time Messaging Protocol
  • RTMP is a Proprietary protocol
  • FLV may contain videos with different codecs
  • Codecs includes Sorenson Spark, VP6, H.264, HE-AAC
  • SWF supports video from Flash Player 6
  • Flash Player 7 added support for FLV
  • Flash Player does not check Filename extension
  • F4V is completely different from FLV
  • F4V does not support Screen video
  • F4V does not support Sorenson Spark
  • F4V does not support VP6 video compression format
  • F4V does not support ADPCM
  • F4V does not support Nellymoser audio compression format
  • F4V is strongly recommended by Authors of Flash Player
  • FLV has limitation when streaming H.264 or AAC
  • File suffix for Flash Video is .flv ?
  • Internet media type for FLV is video/x-flv ?
  • File suffix for F4V is .f4v ?
  • Internet media type for F4V is video/mp4 ?
  • SWF for Flash Player 6 or later can communicate with Adobe Flash Media Server
  • Adobe Flash Media uses RTMP
  • Flash Player can play FLV embedded in SWF created for Flash Player 7
  • Flash Player can play F4V embedded in SWF created for Flash Player 9
  • FLV contain Bitstream of variant of H.263
  • FLV uses Sorenson Spark
  • Sorenson Spark is a variant of H.263
  • Sorenson Spark is older Codec
  • Sorenson Spark is widely available and compatible
  • Sorenson Spark is the first Codec supported in Flash Player
  • Sorenson Spark is required Video coding format in Flash Player 6 and 7
  • On2 TrueMotion VP6 is supported in Flash Player 8 and newer
  • On2 TrueMotion VP6 is preferred in Flash Player 8 and newer
  • On2 TrueMotion VP6 has better quality than Sorenson Spark
  • On2 TrueMotion VP6 is computationally more complex than Sorenson Spark
  • Screen video is also called Screenshare
  • FLV supports two versions of Screenshare
  • Screenshare is an Codec for Screencast
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