Opened 15 years ago
Closed 14 years ago
#4391 closed defect (fixed)
Choppy/skippy/stuttering audio and video playback
| Reported by: | Sam Morris | Owned by: | |
|---|---|---|---|
| Component: | audio | Version: | VirtualBox 3.0.0 |
| Keywords: | Cc: | ||
| Guest type: | Linux | Host type: | Windows |
Description
Since upgrading to VirtualBox 3.0.0, audio and video playback have become unusable with mplayer. Audio will stutter and skip constantly; video will pause for a moment and then catch up, repeatedly.
This does not happen to such a great degree with other audio/video playback programs, but all exhibit the behaviour to a noticeable degree.
My host is 64-bit Vista Home Basic and my guest is Debian using Linux versions 2.6.26 and 2.6.30.
My underlying CPU is a Core i7 920, I've tried changing the number of CPUs in the guest system from 8, to 4, to 1, but it doesn't seem to make a difference.
You may consider this a duplicate of #2580; I'm not sure since I didn't have this problem with any prior version of VirtualBox.
Attachments (2)
Change History (10)
by , 15 years ago
| Attachment: | wintermute-2009-07-04-11-19-48.log added |
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comment:1 by , 15 years ago
mplayer doesn't output any relevant messages save the following when the stuttering gets particularly bad:
Your system is too SLOW to play this!
Possible reasons, problems, workarounds:
- Most common: broken/buggy _audio_ driver
- Try -ao sdl or use the OSS emulation of ALSA.
- Experiment with different values for -autosync, 30 is a good start.
- Slow video output
- Try a different -vo driver (-vo help for a list) or try -framedrop!
- Slow CPU
- Don't try to play a big DVD/DivX on a slow CPU! Try some of the lavdopts, e.g. -vfm ffmpeg -lavdopts lowres=1:fast:skiploopfilter=all.
- Broken file
- Try various combinations of -nobps -ni -forceidx -mc 0.
- Slow media (NFS/SMB mounts, DVD, VCD etc)
- Try -cache 8192.
- Are you using -cache to play a non-interleaved AVI file?
- Try -nocache.
Read DOCS/HTML/en/video.html for tuning/speedup tips. If none of this helps you, read DOCS/HTML/en/bugreports.html.
I also noticed, while experimenting with jackd, that it will regularly complain in burst like this:
alsa_pcm: xrun of at least 46.007 msecs alsa_pcm: xrun of at least 5.333 msecs alsa_pcm: xrun of at least 0.985 msecs alsa_pcm: xrun of at least 0.829 msecs alsa_pcm: xrun of at least 0.041 msecs alsa_pcm: xrun of at least 0.086 msecs
corresponding with choppy periods.
comment:2 by , 15 years ago
I'm also experiencing this problem but in a Windows (XP SP3/32-bit) guest on a Linux (Debian Lenny/64-bit) host. Rebooting the guest seems to fix the issue temporarily. Guest log (attached) contains thousands of messages similar to this:
TM: Giving up catch-up attempt at a 60 001 891 972 ns lag; new total: 52 861 249 165 838 ns
by , 15 years ago
| Attachment: | VBox-triode-20090709-1.log.gz added |
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VirtualBox log from Windows guest.
comment:5 by , 15 years ago
| Resolution: | fixed |
|---|---|
| Status: | closed → reopened |
I'm still experiencing this problem with 3.0.2 in a Windows XP guest on a Linux host. VirtualBox log contains same error messages about giving up on catch-up attempts.
log file