I had a very similar issue with kfilemetadatareader (from kdelibs-bin)
and mkv files.
The backtrace looked the same.
(kfilemetadatareader uses libstreamanalyzer that uses libavformat)
Applying this patch to libavformat solved the problem:
lavf: prevent infinite loops while flushing in avformat_fi
Package: libavformat53
Version: 4:0.8-1
Severity: important
When calling avformat_find_stream_info() on a broken mp3 file,
libavformat enters an endless loop. This is a vulnerability that can
be used as a remote DoS attack on radio players such as MPD, therefore
severity important.
Demo file: ht
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