RPI1-512 Audio Dropout playing HD multichannel music
#46
@fritsch

Do you want
Set Output to Fixed, 5.1 channels, samplerate 48000
only,
or with hdmi_samples_limit=384000 as well?

@popcornmix
I'll test your just after
Config, video/audio player:
3T HDD <USB> RPi2/Libreelec <HDMI> Denon AVR-2313 <HDMI> LG TV 55UF860V
                                          <nfs wired> Linksys WRT32X router <USB> 4T HDD
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#47
@MrNice: Should not matter.
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
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#48
@fritsch

I did the test:
From fresh image, update to OpenELEC Isengard build #0328

Set Output to Fixed, 5.1 channels, samplerate 48000
Play in file mode, no browsing
1 drop (@~25 s) during 4 minutes
Then change to full screen and no browsing for 4 more minutes
No drop
http://xbmclogs.com/pdnlhgcol
Config, video/audio player:
3T HDD <USB> RPi2/Libreelec <HDMI> Denon AVR-2313 <HDMI> LG TV 55UF860V
                                          <nfs wired> Linksys WRT32X router <USB> 4T HDD
Reply
#49
Okay, thx - now please continue with the tests popcornmix is asking for. I think what the firmware does, this "workaround" does fixed.
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
Reply
#50
@popcornmix

I downloaded you zip. This is not a usual firmware update, what should I do with it?
I really am a newbie
Config, video/audio player:
3T HDD <USB> RPi2/Libreelec <HDMI> Denon AVR-2313 <HDMI> LG TV 55UF860V
                                          <nfs wired> Linksys WRT32X router <USB> 4T HDD
Reply
#51
Copy start_x.elf and fixup_x.dat onto boot partition (e.g. what you see when plugging the card into Windows machine), renaming to overwrite the existing start.elf and fixup.dat.
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#52
Test done

From fresh image, update to OpenELEC Isengard build #0328
Changed start.elf and fixup.dat

Added to config.txt:
hdmi_mai_thresh=0x1412
Play in file mode, no browsing
1 drop (@~10 s) during 4 minutes
Then change to full screen and no browsing for 4 more minutes
No drop
http://xbmclogs.com/prw9vskls

See you tomorrow
Config, video/audio player:
3T HDD <USB> RPi2/Libreelec <HDMI> Denon AVR-2313 <HDMI> LG TV 55UF860V
                                          <nfs wired> Linksys WRT32X router <USB> 4T HDD
Reply
#53
(2015-03-29, 17:15)popcornmix Wrote: It looks like setting buffermode=1 is fixing my issue, so I think the current issue I have is just down to the pretty high bitrate of the file (6Mbit/s), the limited buffering in paplayer and my not-great network (I'm going through a wireless bridge at the moment).

Any other way of increasing buffering in paplayer?

There are more users here who have buffering issues with paplayer that are fixed with buffermode=1.
One reports he has buffering with lossless music, but can play Blu-Ray without buffering (this is with a NUC using wifi). So it might be worth considering increasing the buffering paplayer has by default.
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#54
Can you try to read a multiply of PACKET_SIZE?
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
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#55
I did try:
Code:
#define PACKET_SIZE (3840*10)    // audio packet size - we keep 1 in reserve for gapless playback
While it worked, it didn't fix the issue (in the way buffermode=1 did).
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#56
That really smells, that VFS is broken in a very nasty way.
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
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#57
(2015-03-30, 15:36)fritsch Wrote: That really smells, that VFS is broken in a very nasty way.

What is VFS?
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#58
(2015-03-30, 15:33)popcornmix Wrote: I did try:
Code:
#define PACKET_SIZE (3840*10)    // audio packet size - we keep 1 in reserve for gapless playback
While it worked, it didn't fix the issue (in the way buffermode=1 did).

that only defines max packet size to be read. won't help here
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#59
It does, if vfs has an issue with returning / fetching small values ... and it seems it had an effect.
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
Reply
#60
(2015-03-30, 17:29)fritsch Wrote: It does, if vfs has an issue with returning / fetching small values ... and it seems it had an effect.

My comment was saying that increasing PACKET_SIZE didn't have any visible effect at all.
It didn't break anything, but it didn't fix the underflow issue (perhaps my comment was ambiguous).
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