I'm using FFmpeg from live encoding and I want to clarify if there's any way to change the encoding rates while it's in-action (Already encoding).
So... Is it possible?
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no you can't change bitrate in the middle of an encode, and if you did manage to do it, the video would become unplayable. you might be able to use vbr next time or cq mode and the encoder will use whatever bitrate it needs.
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"a lot of people are better dead" - prisoner KSC2-303 -
I agree that ffmpeg can't do it. (Open Broadcast Encoder see: http://forum.doom9.org/showthread.php?p=1478432 might be able to support it)
the video would become unplayable. -
maybe if it were a transport stream where the needed info to play it is always there, but an h264 program stream has a moov atom and mdat atoms that will be incorrect. i could be wrong but that's my understanding.
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"a lot of people are better dead" - prisoner KSC2-303 -
Difficult to do when live but relatively easy for non-real time post where you have a recorded frame history. Expensive realtime hardware encoders have several frames of memory allowing real time adaptive motion compensation. These are used for live sports uplink to limited bandwidth sat transponders.
If you are just recording, do it high bit rate CBR.Recommends: Kiva.org - Loans that change lives.
http://www.kiva.org/about -
moov atom and mdat atoms,... these are for the mp4 container,...
+ http://x264dev.multimedia.cx/archives/286
+ seems like GEFORCEXTREME over at doom9 managed to modify VLC to adjust bitrate on the fly
-> so I really think it is possible
Cu Selur
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