I was able to stream all the FTA channels on that transponder without problem.

From the vlc codec page, it looks like it is correctly recognizing the stream. The mp4 video pid (34) and audio pid (32) and detects the language even.

From the vlc statistics, it looks like it is sending some data, just not audio or video is being decoded. Usually I see this when trying to stream an encrypted stream which isn't being decrypted correctly. But it shows only 2.7Mb/s which is low for an HD stream.

Not sure what this is from the log:
start release channel timer
Unhandled error in Deferred:
Unhandled Error
Traceback (most recent call last):
Failure: twisted.internet.error.ConnectionDone: None.
Maybe just an error because it is trying to close a stream which wasn't really working correctly.

Have you tried re-scanning the satellite - or at least the transponder?

Maybe look at the output from your cam and see if it shows some difference?