VBR MP3 duration miscalculation

[nielm]

Does anyone else have a problem with Sage's idea of the duration of VBR MP3 files? For me, it shows the file to be about 30-40% longer than it is, and then plays silence for the overrun...

This makes it a bit difficult for me for sage to play my MP3's, at least not without manually switching the track when the music stops! (my MP3's are encoded with LAME --alt-preset standard)

And what are the odd start/stop times on the duration bar?

[ToxMox]

I have the same exact problem but never realized that it was caused by the duration being miscalculated. Most of my MP3s are VBR encoded with LAME as well.

[billeR]

same problem w/vbr mps encoded w/lame.

[nielm]

Done a quick test:

128Kbit CBR with LAME: correctly calculated
132Kbit ABR with LAME: incorrectly calculated... I think it takes the bitrate of the first MP3 frame, and then applies it to the entire file...

Sage.log

Mon 3/22 19:50:21.538 testFile=D:\music2\128CBR Awedony.mp3
Mon 3/22 19:50:21.543 Mpegaudiobitrate=128 theDur2=320093
Mon 3/22 19:50:21.574 Added:MediaFile[FA[BAD AIRING] host=hush D:\music2\128CBR.mp3, Seg0[Mon 3/22 19:41:23.141-Mon 3/22 19:46:43.234]]
Mon 3/22 19:50:21.643 New Library Video File MediaFile[FA[BAD AIRING] host=hush D:\music2\128CBR.mp3, Seg0[Mon 3/22 19:41:23.141-Mon 3/22 19:46:43.234]]
Mon 3/22 19:50:21.645 testFile=D:\music2\130ABR.mp3
Mon 3/22 19:50:21.647 Mpegaudiobitrate=32 theDur2=1238800
Mon 3/22 19:50:21.664 Added:MediaFile[FA[BAD AIRING] host=hush D:\music2\130ABR.mp3, Seg0[Mon 3/22 19:28:04.246-Mon 3/22 19:48:43.046]]

123CBR.mp3 is calculated as 5min20s (it is actually 5m19s according to Winamp)
130ABR.mp3 is calculated as 20m39s (it is actually 4m18s)

I have submitted a bug on this...

[nielm]

bug still there in B15

[scadilla]

Does anyone know if this has been fixed in new release? It was still a problem in RC 2

[meekell]

Still not fixed in 2.0 release
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[hemicuda]

Guess I'll dredge up this old thread.

The problem is still there in v6.0.18 and almost all of my MP3s are Lame VBR encoded. They show up nearly 2x actual runtime in Sage, but play fine everywhere else. Sage has listed a 128k bitrate for all the VBR mp3s I've checked so far.

[hemicuda]

I sent a note in to Sage support as well. Maybe they'll figure out something simple other than all of us going back to CBR encoding.