Probably a case of libav being much more forgiving than ogg_info:
On the file [[commons:File:Wilhelm_Viertmanns_Briefe_(Nr._1-4).ogg]]
ogg_info gives: Unexpected end of stream (code 4) for this file.
avprobe otoh gives:
bawolff@Bawolff-L:~$ avprobe Wilhelm_Viertmanns_Briefe_\(Nr._1-4\).ogg
avprobe version 0.8.6-6:0.8.6-1, Copyright (c) 2007-2013 the Libav developers
built on Mar 24 2013 07:20:17 with gcc 4.7.2
Input #0, ogg, from 'Wilhelm_Viertmanns_Briefe_(Nr._1-4).ogg':
Duration: 00:01:39.86, start: 0.000000, bitrate: 194 kb/s Stream #0.0: Audio: vorbis, 44100 Hz, stereo, s16, 192 kb/s Metadata: URL : http://www.avs4you.com ENCODEDBY : Online Media Technologies track : 0
Be nice if we could also detect length properly.
Version: unspecified
Severity: normal