windytan / slowrx

A decoder for Slow-Scanning Television (SSTV).
ISC License
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PD mode decode results in short images #6

Open nivex opened 9 years ago

nivex commented 9 years ago

When decoding a PD image (in my case PD180) I get a roughly half height image:

20150531-150221z_pd180

Something I can't get my head around in the math: The spec says "COLOR SCAN TIMES (Y, R-Y, B-Y)" for PD180 is 183.04ms. 183.04 / 640 = 0.286, as you have listed in modespec.c /but/ the spec then says the sequence is Y(odd), R-Y, B-Y, Y(even). Wouldn't that mean there's a whole extra line not being accounted for somewhere?