Vorbis gapless not working on Sansa Clip+

[spazattk]

Hi,
I recently installed rockbox 3.91 on my Sansa Clip+, and all of my music is encoded in Ogg Vorbis using oggenc (from FLAC sources), but despite this none of it plays gaplessly. I'm not really sure what I'm doing wrong. I'm going to try putting the FLAC copies on and see if they will play gaplessly, but I'm not sure what that will determine. Anyone have any ideas as to what the issue is? Any input would be greatly appreciated.

[saratoga]

Post a link and I'll decode the file with test_codec and see if the length matches the official decoder. 

[spazattk]

A link to what exactly? Sorry, I'm sorta new to this. Do you want a link to the file in question?

[saratoga]

Do you want a link to the file in question?

well you can link whatever you want but it might work better if you picked a file you want help with

[spazattk]

Oh ok. Well here's a song that's supposed to transition seamlessly into the next one on the album: http://dl.dropbox.com/u/307214/01%20Intro.ogg
Post Merge: September 05, 2011, 10:21:45 PMAlso, I just confirmed that the FLAC version of an album plays gaplessly on the device, but the ogg version I encoded does not.

[saratoga]

Decoded it to wav with rockbox and foobar2000, and they're both exactly 976 080 samples long so it seems that the file is decoded gaplessly.  If you're hearing a gap, then perhaps its been added to the file before you encoded it to Vorbis.

[spazattk]

Interesting, thanks. Can I have you check a file I've confirmed has a gap when encoded to vorbis but not in the original FLAC version?

[saratoga]

Interesting, thanks. Can I have you check a file I've confirmed has a gap when encoded to vorbis but not in the original FLAC version?

I just did that. 

[spazattk]

Well I haven't checked if the FLAC version of that song also has a gap. If it doesn't, do you have any idea why the vorbis version would have a gap? As far as I know, vorbis is encoded to be gapless by default isn't it?

[saratoga]

If it doesn't, do you have any idea why the vorbis version would have a gap? As far as I know, vorbis is encoded to be gapless by default isn't it?

Presumably whatever you used to convert it between FLAC and Vorbis added the gap before encoding it.

[spazattk]

That's what I figured too. But I don't know what else to use. I guess I'll try a different version of oggenc and report back.