Hi there
I'm experiencing a lot of stutter type issues when trying to play flac files off an external USB device
This seems to be a common issue
Does anyone know of a fix?
Optimum buffer size etc?
Thanks
Date
Votes
17 comments
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hifi Too many unknown variables - which audio board, which software, which version etc.
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steven price Sorry should have added some of that
Model 2 b
Dac +
Volumio Linux volumio 4.1.18-v7+
Hard drive is a wd model -bus powered but connected to a powered hub
Mp3 files have no issues
Flac files drop very often - too often to be usable
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steven price I've read that it maybe an oversampling problem.
The audio doesn't seem to be playing at the right speed along with the cutting out of sound.
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steven price Just giving this a bump.
Is anyone able to offer any assistance?
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Anton Hi Steven,
this sounds indeed like a buffer problem. Difficult to tell you an optimal buffer size, since it depends on the transmission speed of the USB harddrive, the data (HD flac need of cause more then a ripped CD in flac), if some resampling is done etc.
Just try to increase the buffer size, which should hopefully solve the problem.
Anton
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steven price Thanks for the response.
I've tried 2048. 4096 and 8192 but that didn't seem to make a difference.
Can I go higher than that?
They hard disk does state it goes to USB 3.0
It's one of these
WD Elements SE Portable 500 GB USB 3.0 External Hard Drive - WDBPCK5000ABK-NESN
If the buffer size doesn't fix the issue, what else can I do?
Not just the system but storage?
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steven price P.s. Just noticed hub thing is only USB 2. Could that be causing an issue?
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Anton The Raspberry Pi itself uses only USB 2.0, so a different hub would not change this. What kind of flac are you using (a ripped CD with 44.1 kHz/16 bit, or some HD files)? With increasing the buffer, you should at least hear the dropouts less often, if they are caused by this...
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steven price I'll have to have a look.
It's just not the dropping out of audio, the bits that do play sound like they are playing back a little too fast if that makes sense.
What's the max size of buffer? I have a 4GB card.
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steven price OK just to update incase other people get similar issues.
Tried one of the files from ramplay which was also guff.
Thinking it might be the file. It was a full album file.
Tried a few other files I made and initial playback seemed ok
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steven price Tried the same file on a Windows machine with vlc and the file plays back without issue
I'm stumped again
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Raymond Bolten I have the same problem. Running flac files stutters. Config: DIGI plus pro, PI 3b, wirles usb. Flac 44.1/16, feeding vdac. source: qnap via smb fileshare via wifi. Any advice? Squeezebox touch works perfectly
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Raymond Bolten Btw, runing kodi (libreelec) on the pi
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HiFiBerry team WiFi can be problematic. Try using Ethernet.
BTW: If you're also using a Squeezebox, why don't you use PiCorePlayer or Max2Play to connect to your LMS?
Best regards,
Daniel -
steven price I don't play anything over USB anymore. I do t get any stutter over wifi
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Raymond Bolten Don't want to use lms, trying for aternative now. will try with qnap mediacenter or twonkymedia. And wifi should not be the problem but to eliminate will try cabled.
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Tom Siwel I've been going through a stutter with hd flac (Volumio, RBP3, NAS, and WiFi) I upgraded the power supply to the suggested 5v 2.5A and its sorted the issue.
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