Some .oggs play while others don't

[antimatter]

I just installed rockbox on my ipod video (5.5g) and I love it. However, I have trouble playing some of my oggs while others play perfectly.

The only difference between the files that will play and the ones that wont is the bitrate. When I attempt to play a file with 358Kbit/s it says that there is no file. Then when I play a 61Kbit/s file it plays perfectly.

Anyone have any suggestions as to what the problem is?

Thanks

[Lear]

Well, one possibility is that file is chained, something Rockbox doesn't support at the moment. If the message you get really is "No file", then I'd say it's either that, or the file is corrupted somehow (e.g., by having an ID3V2 tag in front of it).

By the way, 358 kbps is a bit overkill, IMHO. And Rockbox might not play it in real time.

[XavierGr]

I don't understand exactly the error you get. What is the exact error that you see?

Also are you trying to playback the files from the database view or the file tree?
If you are using the database maybe it isn't updated for the file you are trying to playback.

[nls]

XavierGr, He's probably getting the "No File!" in wps that happens when strange errors occur (like a song in the buffer isn't playable by the codec)
Oh and btw I have some crazy 96kHz >400kbps Oggs that play but they skip pretty badly on my h320

[antimatter]

The error I get is the one in the pic. I am running in the file view mode. I do not believe that the file is corrupt because it runs fine on my computer and I have resent it to the ipod several times.

Well, one possibility is that file is chained

I have no idea if the file is chained or not. I also have no idea how to find out if it is.


[attachment deleted by admin, too old]

[XavierGr]

Strange! At least it should be able to read its tags and if not at least show the filename...

[Lear]

You can get that error if the last file in a playlist/isn't playable (e.g., because the file doesn't exist, or metadata reading failed).

A chained ogg is when several oggs have been joined into one file. If you open such a file in Foobar2000, it will show up as several playlist entries.

[antimatter]

I found out that the oggs that wont play were ripped with Grip. Apparently my friend has had some programs that wont play those oggs either. It must have something to do with the way Grip encodes the oggs.

[bk]

Grip has an option to put ID3 tags on all files, regardless of codec. I suggest checking to see if that option is on and turn it off if it is. I've produced unplayable FLAC files before by making that mistake.

[antimatter]

I think i know what the problem is. The start of the ogg file is different when Grip encodes it (see pic unedited.jpg). The file that plays looks like the one in the picture normalogg.jpg (see below).

To test this theory I changed the Grip encoded ogg so that it looked more like the normal ogg file (see pic modified.jpg. Changes are in yellow except for deleting the first two lines and all of the empty space in the original (pic unedited.jpg).

I then tested the file on my ipod (just a note i am running senabs build http://forums.rockbox.org/index.php?topic=7942.0 although even with the normal rockbox software I had this problem.) While the file did not play properly (I messed up something when editing it with notepad) it did find the filename and attempt to play it (see pic Ipod). When it was done playing the file it returned me back to the root directory where I came from.

Anyways, thats thats my best guess as to what is keeping the file from playing. I do not have the programming experience to be able to fix the problem. However I am willing to work on the problem I just have no idea where to start.

Unedited.jpg http://img248.imageshack.us/img248/8554/uneditedcl9.jpg
normalogg.jpg
http://img509.imageshack.us/img509/6177/normaloggop6.jpg
modified.jpg
http://img379.imageshack.us/img379/3301/modifiedas8.jpg
ipod.jpg
http://img291.imageshack.us/img291/5959/ipodgv1.jpg

they were too big to attach  

edit: I also found this
http://sourceforge.net/tracker/index.php?func=detail&aid=1309780&group_id=3714&atid=103714

[soap]

Regardless of if you had problems in the stock build as well, please do all testing in current SVN builds and not unsupported builds.

[RotAtoR]

Unedited.jpg http://img248.imageshack.us/img248/8554/uneditedcl9.jpg
normalogg.jpg

That appears to be an ID3 tag that has been prepended to the file. ID3 tags do not belong on ogg vorbis files and that's almost certainly what's causing the problems. Ogg vorbis files use vorbis comments instead for tags.

[antimatter]

Yea, it was a tag problem. Rewriting the tags in mp3tag seems to solve the problem on the affected files.

Thanks for all the help