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streamon format and and datagram lenght

f41ardu

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After successful implementation of the video stream for Raspberry PI I am still looking into an approach based on Processing for Windows.
I'm still struggeling with the format instead of 11 packeages (11*1460 bytes + 12 lower < 1460 bytes) I receive 4 times 1460 bytes and then a smaller one? Tello is in sdk mode and I use stream on to initiate video streaming.

Any video content in the smaller package?

Strange number off 1460 byte packages differ? Sometimes 4, then 8 then 11???

[19-03-09 08:12:59.168 +0100] receive packet <- from /192.168.10.1, port:62512, length: 1460
Received datagram with 1460 bytes.
[19-03-09 08:12:59.168 +0100] receive packet <- from /192.168.10.1, port:62512, length: 1460
Received datagram with 1460 bytes.
[19-03-09 08:12:59.169 +0100] receive packet <- from /192.168.10.1, port:62512, length: 1460
Received datagram with 1460 bytes.
[19-03-09 08:12:59.169 +0100] receive packet <- from /192.168.10.1, port:62512, length: 1460
Received datagram with 1460 bytes.
[19-03-09 08:12:59.169 +0100] receive packet <- from /192.168.10.1, port:62512, length: 481
Received datagram with 481 bytes.
[19-03-09 08:12:59.201 +0100] receive packet <- from /192.168.10.1, port:62512, length: 1460
Received datagram with 1460 bytes.
[19-03-09 08:12:59.201 +0100] receive packet <- from /192.168.10.1, port:62512, length: 1460
Received datagram with 1460 bytes.
[19-03-09 08:12:59.201 +0100] receive packet <- from /192.168.10.1, port:62512, length: 1460
Received datagram with 1460 bytes.
[19-03-09 08:12:59.201 +0100] receive packet <- from /192.168.10.1, port:62512, length: 1460
Received datagram with 1460 bytes.
[19-03-09 08:12:59.201 +0100] receive packet <- from /192.168.10.1, port:62512, length: 311
Thanks in advance
f41ardu
 
Last edited:

f41ardu

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I regret to say that the performance is slow on even a Raspberry PI3+ and it freeze.
That was the main reason for my python 3.5 approach. I'll just prepare a 386 based Raspberry and expect better video performance. I'm also looking to downscale the size of the video , but without success so far.
You may have a look at my Processing based implementation. The video performance on a Raspberry is much better than the python implementation.
 

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