I've got an oog file (it was mixed by sox from two audiostreams recorded by pbx Asterisk) and I'm trying to get file information with ffprobe. When I use something like 

cat %filename%.ogg | ffprobe -i -

I get invalid file info (Duration : N/A, wrong bitrate and etc.) When I try 

ffprobe -i %filename%

Everything works fine and I get file info. What could be wrong? File content?

ffmpeg ffprobe
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