Q: Do you have any hardware or software module that implements the OSD function? I need video and telemetry to be transmitted in the same UDP packets with high synchronization.
A: Our system supports UDP transmission and can transmit video and telemetry data simultaneously. However, they are sent in separate UDP packets. If you require video and telemetry within a single stream, OSD should be overlaid at the front end (e.g., in the camera, gimbal, or encoder) before the data enters the wireless link.
Q: Can video and telemetry really be packed into one single UDP packet? This is critical for my application.
A: No. The video and telemetry are transmitted in separate UDP packets.
Q: I need low frequencies, different channels for TX and RX, and RJ45 input for my digital cameras (they don’t support HDMI, only Ethernet). Can you support this?
A: Yes. Video input is via the Ethernet port, and telemetry input is via the data port. These are transmitted as separate UDP packets. If you need video and telemetry combined into one stream, you must overlay telemetry onto the video at the front end using OSD. Most IPCs, payload pods, or even analog systems support this feature.
Q: Does the 1886 module pack each video frame together with telemetry data into a single UDP packet?
A: The 1886 module functions as a wireless link for transparent transmission. It transmits the data you provide (video or telemetry) without modification. In some configurations, telemetry can be converted into network port data and transmitted alongside video data, but integration into the same UDP packet must be handled at the front end before entering the module.
Q: I want to transmit telemetry from the flight controller (Mavlink 2 protocol) and a video stream from the camera (RTSP), pack them into one UDP packet, and send them to the ground with precise frame synchronization. Can your module do this?
A: The 1886 module supports transparent transmission of both Mavlink telemetry and RTSP video via UDP. However, video and telemetry are inherently different in size and frequency, making precise synchronization within the same UDP packet very difficult. The air unit accepts both video and telemetry inputs and the ground unit outputs them separately. If you require strict synchronization, telemetry should be overlaid onto the video at the front end before transmission.
Q: Can video and telemetry be transmitted in exactly the same UDP packet?
A: No. The module transmits whichever packet (video or telemetry) arrives first. Both types of data are queued for transmission, and whichever arrives earlier is sent immediately. The delay between video and telemetry packets is very small (only a few milliseconds), but they are not merged into one packet.
So vcan1886 supports UDP transparent transmission of different package on unequal uplink and downlink frequencies.
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