I am working on a project where an FLV is streamed to a player - the player needs to be able to seek to exact frame numbers and pause on them.
The end goal is to achieve a variable playing speed - the player will go to a frame, pause, then go to the next frame, pause, and so forth. (it can also go to previous frames, if rewind is requested) - only for a part of the movie (e.g. when the user selects "slow-mo").
Currently, RTMP is used to serve the flash video content.
- Is it possible to seek to any frame with flash video files, or only key-frames?
- Is it possible to request a portion of a movie via RTMP - and break down the content into frames locally and store an image-per-frame in memory, overlaying the video window and displaying content frame-by-frame?
Any advice on the above will be appreciated!
Arkadi
It is possible to seek only on key-frames. Adobe FMS has builtin transcoder that makes possible to decode frames inside GOP and make frame-precise seeking, but it is not a good idea because of very high server load with bad results.
So easier to do it on flash player with enabled access to video samples.