2017-11-04, 14:49
I am experiencing spurious audio skips that most frequently occur at the first few (15 seconds) seconds after a TV channel switch. Rarely those skips also happen after a longer viewing time.
I cannot reproduce the skips when viewing PVR recorded streams or other videos.
I couldn't find any errors in the debug log, maybe the skips are related to those tempo-adjustments that I found near the dropouts?
The full debug output around a channel switch can be found at:
http://leo.kloburg.at/tmp/kodi-audio/
I am using tvheadend 4.2.4 and kodi 17.4 on a Linux box (Skylake-U 2 core i3-6100U CPU).
CPU usage is low, HW decoding is used
Sync playback to display is OFF
Audio is output device is Pulseaudio HDMI
Resample quality: Medium
Threshold for pitch correction: 2
Limit sampling rate: 48.0
Allow passthrough: ON
AC3 capable receiver: ON
AC3 transcoding: ON
DTS capable: ON
The AV reveiver is a Yamaha RX-V481D with the newest firmware (1.23).
I'd appreciate any hint!
Cheers,
--leo
I cannot reproduce the skips when viewing PVR recorded streams or other videos.
I couldn't find any errors in the debug log, maybe the skips are related to those tempo-adjustments that I found near the dropouts?
Code:
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [in] Setting 'time_base' to value '1/48000'
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [in] Setting 'sample_rate' to value '48000'
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [in] Setting 'sample_fmt' to value 'fltp'
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [in] Setting 'channel_layout' to value '0x3f'
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [in] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3f
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [atempo] Setting 'tempo' to value '0.953979'
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [atempo] auto-inserting filter 'auto-inserted resampler 0' between the filter 'in' and the filter 'atempo'
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [AVFilterGraph] query_formats: 3 queried, 3 merged, 3 already done, 0 delayed
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [auto-inserted resampler 0] picking flt out of 5 ref:fltp
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [SWR] Using fltp internally between filters
12:19:20.995 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [auto-inserted resampler 0] ch:6 chl:5.1 fmt:fltp r:48000Hz -> ch:6 chl:5.1 fmt:flt r:48000Hz
12:19:20.996 T:140622978168576 DEBUG: ffmpeg[7FE556A93700]: [SWR] Using fltp internally between filtersThe full debug output around a channel switch can be found at:
http://leo.kloburg.at/tmp/kodi-audio/
I am using tvheadend 4.2.4 and kodi 17.4 on a Linux box (Skylake-U 2 core i3-6100U CPU).
CPU usage is low, HW decoding is used
Sync playback to display is OFF
Audio is output device is Pulseaudio HDMI
Resample quality: Medium
Threshold for pitch correction: 2
Limit sampling rate: 48.0
Allow passthrough: ON
AC3 capable receiver: ON
AC3 transcoding: ON
DTS capable: ON
The AV reveiver is a Yamaha RX-V481D with the newest firmware (1.23).
I'd appreciate any hint!
Cheers,
--leo