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  #1  
Old 03-16-2012, 06:52 PM
nimosa nimosa is offline
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Default my sansa zip won't play and recognize aac files

my sansa zip won't play and recognize aac files,
is there any solution?

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  #2  
Old 03-16-2012, 07:11 PM
saratoga saratoga is offline
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The zip is picky about aac files. How were yours made and are they drm ed by iTunes?
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  #3  
Old 03-16-2012, 07:32 PM
skip252 skip252 is offline
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It's been my experience the AAC decoder in the sandisk firmware has problems with .m4a files past a certain length (~10-12 mins.) but other than that they will play. It also won't play AAC files named anything thing other than .m4a. AAC and MP4 won't work. That's using the latest firmware, 01.01.18.

The firmwares before that had problems playing AAC files that weren't encoded in a iTunes compatible format. That firmware update also seems to have fixed the distortion that AAC files with a bitrate over ~160 kbps had.

If your files fit that profile and still don't play I'd head over to the sandisk site and let them know there. Maybe if enough people complain they'll get off their duffs and fix their AAC decoder.
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  #4  
Old 03-17-2012, 01:38 PM
nimosa nimosa is offline
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thanks for the reply
i tried many versions: m4a,m4b,aac with no solution.
i will try the company site
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  #5  
Old 03-17-2012, 01:43 PM
skip252 skip252 is offline
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How were the files made and what firmware are you using? If you used a standard encoder like Nero or iTunes the m4a extension should work if you're on the 01.01.18 firmware and the files aren't copy protected.
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  #6  
Old 03-17-2012, 03:43 PM
nimosa nimosa is offline
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I have 01.01.18 firmware
I tried free iTunes podcasts with the m4a extension
no success
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  #7  
Old 03-17-2012, 04:10 PM
saratoga saratoga is offline
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Are you adding them with MTP or MSC? Older versions of Windows didn't do so well with AAC, so perhaps using MSC for USB would be safer.

Alternatively, I've put a lot of work into the rockbox AAC decoder over the years. If you don't mind trying out a different firmware, i'm quite sure your files will play in Rockbox (and probably with better battery life).
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  #8  
Old 03-24-2012, 02:43 PM
nimosa nimosa is offline
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I am using msc mode
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  #9  
Old 03-24-2012, 04:38 PM
skip252 skip252 is offline
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I'm not sure if it will help any but you can get a copy of MediaInfo and post the results. MediaInfo is cross platform so you should be able to get a version appropriate for your operating system.

I say I'm not sure if it will help because I've done a bit of very unscientific testing of various AAC encoders, bitrates and quality settings and I've found that the AAC decoder in the sandisk Clip Zip firmware can be made to fail any number of ways.

Files longer than ~10-12 minutes get ignored and won't play. Files encoded with different versions of Quicktime installed won't play. Files encoded with different versions of iTunes won't play. Files below a certain bitrate won't play. Files above a certain bitrate won't play. HE-AAC files won't play. Some sample rates would play and some wouldn't. I'm certain that I haven't even a tried a significant percentage of the ways files can be encoded in AAC but only 1 in 6 of the ways I've tried so far will play.

The one thing that all of those files had in common is that they all played using Rockbox. If your files aren't copy protected and you can only get them in AAC you may want to look into Rockboxing your Zip.
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  #10  
Old 03-26-2012, 12:49 PM
nimosa nimosa is offline
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media info of file downloaded from itune
General
Complete name : D:\itune podcasts\iTunes U\Philosophy 132, 001_Spring 2012_UC Berke\01 Lecture 1.m4a
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 36.1 MiB
Duration : 1h 15mn
Overall bit rate mode : Constant
Overall bit rate : 67.3 Kbps
Album : Philosophy 132, 001|Spring 2012|UC Berkeley
Track name : Lecture 1
Track name/Position : 1
Track name/Total : 0
Grouping : Philosophy 132,
Performer : "John R. SEARLE"
Composer : UC Berkeley
Genre : iTunes U
Recorded date : UTC 2012-01-18 00:53:49
Encoded date : UTC 2012-01-18 00:42:44
Tagged date : UTC 2012-03-17 21:06:59
Copyright : Creative Commons 3.0: Attribution-NonCommercial-NoDerivs
Cover : Yes
keyw : ,UC Berkeley,education,Creative Commons 3.0: Attribution-NonCommercial-NoDerivs,Philosophy 132, 001|Spring 2012|UC Berkeley,John R. SEARLE
desc : "Lecture 1"
catg : Philosophy
itnu : 1
purl : (Binary)
egid : (Binary)
ldes : ""
cnID : 0
rtng : 0
atID : 0
cmID : 0
plID : 0
geID : 0
sfID : 0
tvsn : 0
tves : 0
stik : 0
purd : 2040-02-06 06:07:36
rndu : 0
rpdu : 0

Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 1h 15mn
Source duration : 1h 15mn
Bit rate mode : Constant
Bit rate : 64.0 Kbps
Channel(s) : 1 channel
Channel positions : Front: C
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 35.1 MiB (97%)
Source stream size : 35.1 MiB
Language : English
Encoded date : UTC 2012-01-18 00:41:33
Tagged date : UTC 2012-03-17 21:06:59
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  #11  
Old 03-26-2012, 05:44 PM
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FreeZ5 FreeZ5 is offline
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Hmmm. 1hr 15 min is definitely longer than 10-12 minutes. (This limit was mentioned in post #3 above, and post #9.) I guess that all of your files are this long.

Steve
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  #12  
Old 03-26-2012, 05:56 PM
saratoga saratoga is offline
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Quote:
Originally Posted by skip252 View Post
Files longer than ~10-12 minutes get ignored and won't play.
lol i know exactly how that problem works. We had it in rockbox on the Sansa players (due to their small RAM) until someone figured out a way to parse MP4 files without having to load their (potentially gigantic) seek tables into memory.
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  #13  
Old 03-27-2012, 10:05 AM
skip252 skip252 is offline
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If the podcasts are your only AAC files you may want to convert them to mp3. I wouldn't ordinarily advise that for music files due to the quality loss from transcoding. With spoken word files I've found that the loss in quality isn't usually very noticeable, if at all.

A converter like fre:ac should handle that. When I use it on my older slow WinXP machine it converts a hour long AAC file to mp3 in less than 2 minutes. That drops to around a minute on newer machines with a multicore processor, Converting isn't the best option but it's the only one I can see unless sandisk fixes their AAC decoder to handle longer files.
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  #14  
Old 04-11-2012, 02:57 PM
nimosa nimosa is offline
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thanks, skip
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  #15  
Old 04-25-2012, 05:28 PM
sigmat4 sigmat4 is offline
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Default Clip Zip .aac play

What worked for me. Bought a Clip Zip Plus 4 GB in March. Updated firmware to 01.01.20A (manual update). Formatted Transcend 16 GB SDHC4 to FAT32. Had a folder of 13.4 GB classical music by processing CDs with iTunes software to .aac files (128kbps, variable bit rate). Set USB mode to MSC to transfer a few files to the card. Clip Zip played .aac files only if less than about 10 minutes. The song list in the clip zip showed the file name but no action if longer than 10 minutes..

Converted the 13.4 GB folder to .mp3 files with iTunes software (about 8 hours). Configured a playlist for the whole folder using Windows Media Player and synched with the card in the Clip Zip (2 hours to load and 8 min to refresh). The music quality through the earbuds was excellent. Played through my receiver somewhat less so. The Clip Zip display showed the album structure, making selection simple.

My computer:

Dell Vostro 220
2.67 gigahertz Intel Core2 Duo
2 GB RAM
Vista Home Premium SP2
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  #16  
Old 04-25-2012, 05:55 PM
saratoga saratoga is offline
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Most people would not recommend converting from one lossy format to another.
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  #17  
Old 04-25-2012, 07:29 PM
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@ sigmat4
That certainly took you a lot longer than loading the card via a card reader. I loaded 32GB card with around 27GB of music in less than an hour (sorry I don't recall the exact time). Also I second what saratoga said, every time you encode with a lossy encoder the quality will decrease and there isn't a way to get the quality back unless you re-rip the CD.
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  #18  
Old 03-12-2013, 01:47 AM
Jasonuncloned Jasonuncloned is offline
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Digging up ancient history here but I have a related question.

Will a Clip+ with rockbox play m4a files?

I'm debating between replacing my dying Clip+ with a Zip Clip because it can do that (although it sounds like it has issues according to this thread) or just sticking to a new Clip+.
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  #19  
Old 03-12-2013, 06:08 AM
skip252 skip252 is offline
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I wouldn't get a Clip Zip if you use AAC files and don't plan on using Rockbox. The sandisk AAC decoder still hasn't be fixed. Files longer than ~10 minutes still won't play and are skipped or freeze if you try to play them. AAC files shorter than that work for me as long as the extension is .m4a.

Rockbox works just fine with AAC files including AAC lossless. The list of supported codecs is in the manual. http://download.rockbox.org/daily/ma...ml#x18-341000B
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