Rockbox Technical Forums

Support and General Use => Audio Playback, Database and Playlists => Topic started by: tominated on November 03, 2010, 06:26:21 AM

Title: Slow playback of lossless files
Post by: tominated on November 03, 2010, 06:26:21 AM
Hi there,
I've just gotten rockbox installed on my old 30gb iPod Video (5th gen, not 5.5) in the hopes of keeping my flac collection on it. I noticed straight away, that every lossless song (both FLAC and ALAC) is played back slowly, altering the pitch quite drastically. I noticed just tonight, that the song length field on the now playing screen actually reflects the longer time. For example, the song hurt, by nine inch nails is reported as 6:17 in foobar, but it appears as 6:50 in rockbox. Does anybody know how to fix this?
Thanks,
Tominated
Title: Re: Slow playback of lossless files
Post by: soap on November 03, 2010, 08:21:58 AM
The math says this is a 44.1 / 48 issue.

48K musical content is not the most common, but it isn't that unusual.
Since you're the first to report this, my initial suspicion is something non standard about your (I assume (due to The Downward Spiral)) 48K sampling rate files.  Something non-standard which foobar is ignoring but Rockbox is not.

EDIT:
Or perhaps you have the Justin Bieber improvement filter turned on by mistake?
;)
Title: Re: Slow playback of lossless files
Post by: tominated on November 03, 2010, 03:51:12 PM
That would be it. It is a 48K sampling rate album. How would I get rockbox to play it normally, or would I have to convert it?
Title: Re: Slow playback of lossless files
Post by: saratoga on November 03, 2010, 04:01:22 PM
Post a bug report with one of those files:

http://www.rockbox.org/tracker/index.php?type=2