First few pixels were OK but then there was a mess, like something was missing.
After running, I was able to see some images with correct size but they were somehow damaged. So I searched google for python multicast listener and modified it to save data to. * frame chunk number – (unsigned int, big endian) first image chunk is 0x0000, increments by 0x01, last chunk has MSB set to 1 * frame number – (unsigned int, big endian) all chunks within one JPEG have same frame number, increments by 0x01 | 2B – frame number | 2B – frame chunk number | data | After investigating packets in sequence, I found out following structure in UDP payload: After a while I found a packet with JFIF header (on picture above) – great! data is not encrypted, nor compressed and contains JPEGs. Highest bitrate was on port 2068 what indicated it is video stream. I found out, that it uses multicast to two UDP ports (20) and time to time broadcast some control packets. Second thing I did was of course starting wireshark and sniffing the data. When the package arrived, first thing was to test if it really works as described and it really did – audio and video output from DVD player transmitted through common ethernet switch to my TV. Specification said something about MJPEG so I thought it might be possible. Suddenly, I have found a device, which transmitted HDMI signals over IP network for half of the above price so I took the chance. There are PCI-x HDMI input cards on the market, but they cost 100$+.
Hdmi over ip broadcaster how to#
Short time ago, I was searching for a way how to get HDMI output from camera to PC (and then stream on the Internet).
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