I would like to know real experience between mjpeg and H264 in following particular conditions.
In a train or metro station most cameras are installed for crowd observation, in these conditions 4 images per second are largely enough. What is the difference in bandwidth/storage between mjpeg and H264.
Real site values would be great
Robert
You might have some difficulty getting a response to this with real site values. Not many integrators bother with MJPEG unless there is a strict need for it. Further the scenario you are detailing is so incredibly specific that the pool of possible people that could respond is small. Is there a specific reason you are debating this scenario?
Sorry, I do not see this as an exceptional circumstance.
My interest goes mainly to the impact of the crowd and slow image rate on the bandwidth. In mjpeg this is easy however how much better does H264 or H265 and how shall I make a calculation that best approaches the reality.
Robert, we have not tested MJPEG vs H.264 in some years since MJPEG has been in decline and increasingly camera manufacturers are even dropping support for MJPEG. However, see: H.264 vs MJPEG - Quality and Bandwidth Tested
In your scenario of low frame rate and high scene activity, I would expect the bandwidth savings of H.264 to be modest - 25% or less. So if you really want to use MJPEG, you won't suffer a significant bandwidth penalty by doing so in these conditions.
That said, if there are times of day where the train station has low activity (perhaps in the middle of the night), that's where H.264 will deliver significantly higher savings (especially conjoined with newer smart codecs).
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