Kyle’s Weblog

It seems as though nuvexport development has slowed recently. I’ve run into problems with ffmpeg throwing floating point exceptions when invoked from nuvexport.

After some discussion on the official nuvexport trac about the problem. It seems that the following patch fixes the problem:

--- nuvinfo.pm.orig     2006-10-02 23:42:17.000000000 -0400
+++ nuvinfo.pm  2006-10-12 16:58:12.000000000 -0400
@@ -184,10 +184,10 @@ package mythtv::nuvinfo;
($info{'width'})                 = $data =~ m/^ID_VIDEO_WIDTH=(d+)/m;
($info{'height'})                = $data =~ m/^ID_VIDEO_HEIGHT=(d+)/m;
($info{'fps'})                   = $data =~ m/^ID_VIDEO_FPS=(d+(?:.d*)?)/m;
-        ($info{'audio_sample_rate'})     = $data =~ m/^ID_AUDIO_RATE=(d+)/m;
-        ($info{'audio_bitrate'})         = $data =~ m/^ID_AUDIO_BITRATE=(d+)/m;
+        ($info{'audio_sample_rate'})     = $data =~ m/^ID_AUDIO_RATE=([1-9]d*)/m;
+        ($info{'audio_bitrate'})         = $data =~ m/^ID_AUDIO_BITRATE=([1-9]d*)/m;
($info{'audio_bits_per_sample'}) = $data =~ m/^AUDIO:.+?ch,s*[su](8|16)/mi;
-        ($info{'audio_channels'})        = $data =~ m/^ID_AUDIO_NCH=(d+)/m;
+        ($info{'audio_channels'})        = $data =~ m/^ID_AUDIO_NCH=([1-9]d*)/m;
($info{'fps'})                   = $data =~ m/^ID_VIDEO_FPS=(d+(?:.d*)?)/m;
($info{'aspect'})                = $data =~ m/^ID_VIDEO_ASPECT=(d+(?:[.,]d*)?)/m;
($info{'audio_type'})            = $data =~ m/^ID_AUDIO_CODEC=(d+(?:.d*)?)/m;

I didn’t write this, but it solved a currently unresolved bug. Here’s a link to the original author’s patch.