Let me amplify
Turn that dial all the way up to 11.
In the first test,
I open with Audacity,
It recognizes a file with some issues
but it handles those issues so I can work with it in Audacity.
However, when I write out a copy
it does not write out a fixed aiff file.
In the second test,
I open with Amadeus,
Behaves like Audacity.
However, it writes out a corrected aiff file.
I just rechecked to see
and yes the Amadeus files work correctly in iPod.
One other wrinkle.
Peak finds fault with the Audacity resaved copies of the split files
Peak has no issue with the Amadeus resaved copies.
It would be most helpful if you avoided writing in abbreviations.
“just a letter”: What does that mean in English?
“and a number”: Likewise, what does that mean?
“no title, no artist”: If you are referring to metadata, please say so.
“no work”: We’ve had this phrase before, but I’m still not clear about the details. Assuming that you mean the same “no work” as in this post, you go on to say “iTunes looks at it, gets an error and says I will fix that for you.” I doubt that iTunes actually said that. What was the actual error /warning from iTunes?
Precisely what issues?
Not until there is a clear description of the fault.
In what way do AIFF files produced by Audacity fail to meet the AIFF file format specification? If the files do not meet the file format specification, then that is a bug that can be addressed by the Audacity developers. If the files do meet the AIFF file format specification, then it is not an Audacity bug.
Not in Safari, or Firefox either
but I did get to File Save As in Firefox
I do not have an iPod. Koz or someone else who has an iPod could try. The clearer the problem is, the more likely someone will try.
Miller aiff did not play on my ipod
split Miller aiff did not play on my ipod ( 4 10 seconds splits)
Buffy aiff already on my ipod plays just fine
I readded the bluegrass tape aiff on my ipod and it plays just fine buffy.tiff (264 KB)
How do we interpret the result that this file does not play on your iPod, yet Koz tested that same file on two different iPods and it played on both with no problem?
Could it be that the issue depends on a specific iPod version, or perhaps a specific version of iPod firmware, or something to do with the version of iTunes that is used to load the AIFF files onto the iPod?
From a quick Google search it appears that there is a common problem with Mac OS X getting AIFF and AIFC files mixed up.
These types of issues with AIFF files come up on forums for other software that are unrelated to Audacity, including Sound Forge, Logic, ProTools and Ableton Live.
The best “solution” that I’ve seen in these forums is to not use WAV rather than AIFF.
Do we have any direct evidence that Audacity is writing AIFF files that are not compliant to the file specification?
That’s jumping to the assumption that the file is “broken” in some way, which at this stage I’d say is far from certain.
Apple support say that the error -39 message indicates that the file may be corrupt, but in this case the file data is clearly not corrupt because the file opens correctly in other applications.
Also, the fact that searching Google brings up lots of issues with AIFF files from other well known applications (such as Logic, ProTools, Ableton Live) strongly suggests that the issue is not specific to Audacity.
Try this file, it’s just a 10 second beep.
Does it work in iTunes?
Does it work in Peak LE?
Does it work on your iPod? test.aiff (861 KB)
As stated before, if Audacity exports an iTunes-created AIFF file containing NORM and PGAP data, it duplicates the Normalisation information towards the top of the file (but removing the “NORM” designation from both instances) and removes the Gapless (PGAP) information entirely.
AIFF’s saved by Audacity or most non-Apple programs will not be identical to those saved by iTunes because of this iTunes-specific metadata.
@audio_pete, I don’t think I ever got an answer to this question - if you export from Audacity as AIFF without metadata, then add the metadata in iTunes, does iPod play the files?
I don’t have iTunes or any iTunes files so I need to ask.
Is the “iTunes-specific metadata” in one of the standard chunks, or is it an additional chunk outside of the AIFF specification?
In particular, where are these “NORM” and “PGAP” values?
Is Audacity moving the order of the chunks or is the NORM data moved within the chunk to which it was written by iTunes?
When I saw it happening, iTunNORM was duplicated near the start of SSND but the tag descriptions “iTunNORM” were removed from both. The iTunPGAP description and value was removed (perhaps the entire tag was removed - I don’t recall).
I’ve attached a short AIFF, created by File > Export Selection in Audacity, then saved in iTunes on Windows.
You can think what you want
I KNOW Audacity does NOT write out a proper aiff file.
I began with a personal project to transfer 3 cassette tapes to my iPod.
I completed part of that task yesterday when I moved Tommy by the Who to my iPod.
Most of the work was done in Audacity, the final aiff file came from Amadeus.
Today, I completed Crusin’ with the Classics vol 6 using the same workflow.
Seems a shame that Audacity does all the work but Amadeus gets the final credit.
That just leaves the Bluegrass tape which I will complete as soon as I get time.
Are you really sure it’s worth the effort - you do realize that you can buy the CD of Tommy quite cheaply these days (Amazon US $8.49, Amazon UK £5.94) - especially as your source material is inherently noisy tape