Thanks for the pointer, but article does not mention about coding technique if I have not missed.
Seems the tests have been carried out using MJPEG. My question was spped up on H.264 though.
Frame rate boost is usually a feature that is available in the VMS regardless of the CODEC used. However, the trigger is usually implemented to ramp up in case of motion, you mentioned alarms- it could be that the VMS has not implemented this ramp up feature for alarms.
Which VMS are you using?
Would you include specifics as to how it is configured?
These were all done with H.264.
FLIR Security | 11/09/13 03:31am
"...when you stream in H.264 or MPEG-4, no option exists to increase the frame rate on motion or event. In most cases, you can only choose to record all frames instead of only the key frames."
While it is technically correct that you can't 'increase frame rate' on motion/event using H.264 or MPEG-4, if you record 'key frames only' (~1fps, as you note), then choose 'record all frames' on motion/event, this is - essentially - the same thing as the 'speed-up' function using MJPEG compression.