[FFmpeg-devel] [PATCH] asf-format doesn't work as stream for XBox360

[Patric Stout]

Patric Stout schreef:
> Anyway, I will try to find a tool that can capture upnp streams on
> Linux, so I can check what Windows sends as header values and compare it
> to the result of ffmpeg.
>
>
>   
As promised, I did lookup what Windows sends in its streams, and
surprisingly, it sends '50' too as data-chunk-size. Here are snippets
from the stream (tcpdump):

Stream from Windows:

        0x0360:  0031 002d 0070 0061 0073 0073 0020 0043  .1.-.p.a.s.s...C
        0x0370:  0042 0052 0000 0002 0061 0136 26b2 758e  .B.R.....a.6&.u.
        0x0380:  66cf 11a6 d900 aa00 62ce 6c*32 0000 0000*  f.......b.l2....
        0x0390:  *0000 00*73 4ffd 74ce ac21 44b9 e0bf ae67  ...sO.t..!D....g
        0x03a0:  0c2a 4f00 0000 0000 0000 0001 0182 0000  .*O.............

To make sure I had the right bytes, I modified ffmpeg to send
0x8FFFFFFFFFFFFFFF (easy to spot ;)), which resulted in:

        0x0230:  0061 0020 0041 0075 0064 0069 006f 0020  .a...A.u.d.i.o..
        0x0240:  0056 0038 0000 0000 0002 0061 0136 26b2  .V.8.......a.6&.
        0x0250:  758e 66cf 11a6 d900 aa00 62ce 6c*ff ffff*  u.f.......b.l...
        0x0260:  *ffff ffff* *8f*00 0000 0000 0000 0000 0000 
................
        0x0270:  0000 0000 0000 0000 0000 0000 0001 0182  ................

As you can see, the specs are wrong. 0 is not the correct value to send
in case you don't know the length yet, 50 is. I hope this is enough
'proof' to accept my latest patch.


With kind regards,

Patric Stout