Hi every one who discover this thread with the problem...
I found a solution that needs to be tested over and over.
The solution is to suspress that unsuccessful attempt to subscribe to the stream. Although it was reported as an error, the stream was beginning to be delivered by the server.
As I thought under circonstances (very fast response from the server), rtmpdump droped the first packets, which led to a corrupted dump.
If this works for 2/3 days, I'll work as a patch (an option to allow to bypass FCSubscribe method call for livestreams). If you want to perform the same workaround I've been testing, look for this to comment :
Code:
else if (r->Link.lFlags & RTMP_LF_LIVE)
SendFCSubscribe(r, &r->Link.playpath);
But, anyway, it seems to work for my problem, so use carefully...