GNOME Bugzilla – Bug 346769
OSS output prints error messages, playback of low sample-rate audio is stuttering
Last modified: 2011-08-11 12:45:10 UTC
Please describe the problem: Already at launch (with applications such as quodlibet), before any actual playback starts, there's multiple instances of this warning on stderr: oss(79196) gstosshelper.c(245):gst_oss_helper_rate_probe_check: Driver bug recognized (driver does not round rates correctly). Please file a bug report. More of these are printed once actual playback starts. Playback seems to be normal despite these for data with 44100Hz sampling rate, but the sound becomes increasingly jerky and stuttering the lower the rate goes, with 11025Hz data becoming unbearable to listen to. This is on FreeBSD 5.5, with pcm0: <VIA VT8237> port 0xd400-0xd4ff irq 22 at device 17.5 on pci0 pcm0: <Avance Logic ALC850 AC97 Codec> Steps to reproduce: Actual results: Expected results: Does this happen every time? Other information:
Duplicate of bug #316846 and/or bug #334832 by any chance?
Some additional observations: - The warning messages only appear with quodlibet, not with other players (such as rhythmbox). The playback issue however is present with all players I've tried. - I have gathered more evidence that the playback problem is not decoder specific, since I've been able to reproduce it with both mp3 and ogg vorbis data. Furthermore, the sampling rate threshold for the playback to become stuttering is < 12800 Hz (tested with oggenc --resample). I can't tell for certain whether this bug is a late duplicate of the ones listed above, but I'd guess it is not.
Testcase for stuttering playback: gst-launch-0.10 playbin uri=http://people.fruitsalad.org/lofi/stuff/waltz2.ogg
Could you run $ GST_DEBUG=oss:5,baseaudiosink:5,audioresample:5 gst-launch-0.10 playbin uri=http://..../waltz2.ogg 2> dbg.log ... Control-C after a few seconds $ bzip2 dbg.log and attach the output?
Created attachment 68960 [details] Requested log
Is this still a problem? The debug log claims that these are bugs in your driver, do you still use the same driver?
Michaels please can you reply the comment #6 ? thank
Please feel free to reopen this bug if the problem still occurs with a newer version of GStreamer Core 0.10.35, Base Plugins 0.10.35, Good Plugins 0.10.30 stable release.