Hello,
I've build a new VDR with h.264 xineliboutput plugin software decoding
and got a problem now with
buffer overruns and distorted recordings on all HD channels:
... Nov 5 05:32:03 vdr2 vdr: [32753] ERROR: 47231 ring buffer overflows (8879240 bytes dropped) Nov 5 05:32:09 vdr2 vdr: [32753] ERROR: 31042 ring buffer overflows (5835896 bytes dropped) Nov 5 05:32:15 vdr2 vdr: [32753] ERROR: 47325 ring buffer overflows (8897100 bytes dropped) Nov 5 05:32:21 vdr2 vdr: [32753] ERROR: 28306 ring buffer overflows (5321528 bytes dropped) Nov 5 05:32:27 vdr2 vdr: [32753] ERROR: 14033 ring buffer overflows (2638204 bytes dropped) ...
This occurs with both saa7146 and mantis pci tuner cards.
This has not occured with the old VDR system using Broadcomm's crystalhd decoder in libxine.
LIVE TV works fine.
I've tried stable and testing minidvblinux.de VDR live systems to crosscheck, but same issue occurs.
If I increase the buffer for the saa7164 cards with module parameter it's getting worse and distorted picture and sound.
Any Ideas?
Increase VDR's buffer in source code?
What is the correct driver module debug parameter to provide a useful debog log?
Y tom
Not a DVB drivers or hardware issue.
Good old Kaffeine DVB app recordings are OK, no distorted stream.
VDR BUG!
y tom
On 06.11.24 04:57, schorpp wrote:
Hello,
I've build a new VDR with h.264 xineliboutput plugin software decoding
and got a problem now with
buffer overruns and distorted recordings on all HD channels:
... Nov 5 05:32:03 vdr2 vdr: [32753] ERROR: 47231 ring buffer overflows (8879240 bytes dropped) Nov 5 05:32:09 vdr2 vdr: [32753] ERROR: 31042 ring buffer overflows (5835896 bytes dropped) Nov 5 05:32:15 vdr2 vdr: [32753] ERROR: 47325 ring buffer overflows (8897100 bytes dropped) Nov 5 05:32:21 vdr2 vdr: [32753] ERROR: 28306 ring buffer overflows (5321528 bytes dropped) Nov 5 05:32:27 vdr2 vdr: [32753] ERROR: 14033 ring buffer overflows (2638204 bytes dropped) ...
This occurs with both saa7146 and mantis pci tuner cards.
This has not occured with the old VDR system using Broadcomm's crystalhd decoder in libxine.
You're talking about "xineliboutput" and "libxine", as well as "saa7146", "mantis pci tuner cards" and "Broadcomm's crystalhd decoder". Did you change several of these at the same time? Can you start from a working system and change only one at a time, to find out which one causes the problem.
LIVE TV works fine.
I've tried stable and testing minidvblinux.de VDR live systems to crosscheck, but same issue occurs.
If I increase the buffer for the saa7164 cards with module parameter it's getting worse and distorted picture and sound.
Any Ideas?
Increase VDR's buffer in source code?
What is the correct driver module debug parameter to provide a useful debog log?
Y tom
Not a DVB drivers or hardware issue.
Good old Kaffeine DVB app recordings are OK, no distorted stream.
VDR BUG!
Can you send me a recording that shows the problem? You can use https://www.transfernow.net to do so.
Klaus
Am 07.11.24 um 21:36 schrieb Klaus Schmidinger:
On 06.11.24 04:57, schorpp wrote:
Hello,
I've build a new VDR with h.264 xineliboutput plugin software decoding
and got a problem now with
buffer overruns and distorted recordings on all HD channels:
... Nov 5 05:32:03 vdr2 vdr: [32753] ERROR: 47231 ring buffer overflows (8879240 bytes dropped) Nov 5 05:32:09 vdr2 vdr: [32753] ERROR: 31042 ring buffer overflows (5835896 bytes dropped) Nov 5 05:32:15 vdr2 vdr: [32753] ERROR: 47325 ring buffer overflows (8897100 bytes dropped) Nov 5 05:32:21 vdr2 vdr: [32753] ERROR: 28306 ring buffer overflows (5321528 bytes dropped) Nov 5 05:32:27 vdr2 vdr: [32753] ERROR: 14033 ring buffer overflows (2638204 bytes dropped) ...
This occurs with both saa7146 and mantis pci tuner cards.
This has not occured with the old VDR system using Broadcomm's crystalhd decoder in libxine.
You're talking about "xineliboutput" and "libxine", as well as "saa7146", "mantis pci tuner cards" and "Broadcomm's crystalhd decoder". Did you change several of these at the same time?
? I didn't understand that fully.
Yes, the issue is reproducible with both tv card models and linux 3.12.40...6.x drivers.
No, the old crystalhd system is already deactivated and dissassembled for selling to eastern europe.
Can you start from a working system and change only one at a time, to find out which one causes the problem.
Yes, the testing platform is the new DFI x86 I7 System with plenty of ressources using xineliboutput ffmpeg AV software decoding.
Nov 7 18:13:21 vdr2 vdr: [25428] initializing plugin: xineliboutput (2.0.0-cvs): X11/xine-lib Ausgabe-Plugin
I could install e.g. softhddevice to crosscheck if still available in yavdr precision ppa but kaffeine recording works fine?
The issue occurs using production software vdr 2.0.6 AND
using recent VDR and drivers with minidvblinux.de 6.5 live system (xineliboutput).
Both SD (MTV,ARD,ZDF, DELUXE MUSIC) and HD Channels (ARD,ZDF) affected.
I've already increased the libxine buffer:
Nov 8 01:33:22 vdr2 vdr: [6124] [input_vdr] Using non-default "media.xvdr.num_buffers_hd:5000"
It looks like a problem with the high bandwidth ZDF/ARD channels, like we had with the old TT/Siemens full-featured mpeg2 decoder dvb cards but this should not occur with the advanced TDA10023 Tuner cards,
Recordings of the low bandwidth TELE5/DMF SD channels are always ok.
I've recorded TELE5 and DMF channels simultanously for 2h without any buffer overflow in logs.
Nov 8 03:31:31 vdr2 vdr: [9454] buffer usage: 80% (tid=9453) Nov 8 03:31:57 vdr2 vdr: [9454] buffer usage: 60% (tid=9453) Nov 8 03:31:57 vdr2 vdr: [9454] buffer usage: 70% (tid=9453) Nov 8 03:31:57 vdr2 vdr: [9454] buffer usage: 60% (tid=9453) Nov 8 03:36:44 vdr2 vdr: [6108] buffer stats: 0 (0%) used
Recording high bandwidth zdf neo HD simultanously with DMF SD reproduces the issue:
Nov 8 04:28:14 vdr2 vdr: [11341] buffer usage: 80% (tid=11378) Nov 8 04:28:29 vdr2 vdr: [11341] buffer usage: 90% (tid=11378) Nov 8 04:28:32 vdr2 vdr: [11341] buffer usage: 100% (tid=11378) Nov 8 04:28:32 vdr2 vdr: [11341] ERROR: 1 ring buffer overflow (1 bytes dropped) Nov 8 04:28:38 vdr2 vdr: [11341] ERROR: 15000 ring buffer overflows (2820000 bytes dropped) Nov 8 04:28:45 vdr2 vdr: [11341] ERROR: 5570 ring buffer overflows (1047160 bytes dropped) Nov 8 04:28:52 vdr2 vdr: [11341] ERROR: 4974 ring buffer overflows (935112 bytes dropped) Nov 8 04:28:58 vdr2 vdr: [11341] ERROR: 20223 ring buffer overflows (3801924 bytes dropped)
After some Minutes the buffers overflow and the record gets distorted.
LIVE TV works fine.
I've tried stable and testing minidvblinux.de VDR live systems to crosscheck, but same issue occurs.
If I increase the buffer for the saa7164 cards with module parameter it's getting worse and distorted picture and sound.
Any Ideas?
Increase VDR's buffer in source code?
Where's the (ring) buffer code in VDR sources, I try increasing?
Nov 7 05:00:59 vdr2 vdr: [2348] [input_vdr] vdr_plugin_write: buffer overflow ! (2068 bytes) Nov 7 05:01:20 vdr2 vdr: [2348] [input_vdr] vdr_plugin_write: buffer overflow ! (2068 bytes)
What is the correct driver module debug parameter to provide a useful debog log?
There're no buffer options in the mantis kernel driver.
Y tom
Not a DVB drivers or hardware issue.
Good old Kaffeine DVB app recordings are OK, no distorted stream.
VDR BUG!
Can you send me a recording that shows the problem? You can use https://www.transfernow.net to do so.
https://www.transfernow.net/dl/20241108oxywvwO3/xMpWPpc5
ffmpeg analyze log attached here. -Attachment unix encoded TXT-
Klaus
y tom
Hello Klaus,
Am 08.11.24 um 04:35 schrieb schorpp:
Am 07.11.24 um 21:36 schrieb Klaus Schmidinger:
On 06.11.24 04:57, schorpp wrote:
Hello,
I've build a new VDR with h.264 xineliboutput plugin software decoding
and got a problem now with
buffer overruns and distorted recordings on all HD channels:
... Nov 5 05:32:03 vdr2 vdr: [32753] ERROR: 47231 ring buffer overflows (8879240 bytes dropped) Nov 5 05:32:09 vdr2 vdr: [32753] ERROR: 31042 ring buffer overflows (5835896 bytes dropped) Nov 5 05:32:15 vdr2 vdr: [32753] ERROR: 47325 ring buffer overflows (8897100 bytes dropped) Nov 5 05:32:21 vdr2 vdr: [32753] ERROR: 28306 ring buffer overflows (5321528 bytes dropped) Nov 5 05:32:27 vdr2 vdr: [32753] ERROR: 14033 ring buffer overflows (2638204 bytes dropped) ...
This occurs with both saa7146 and mantis pci tuner cards.
This has not occured with the old VDR system using Broadcomm's crystalhd decoder in libxine.
I've FIXED it.
Nov 9 18:25:33 vdr2 vdr: [5318] buffer stats: 178600 (3%) used Nov 9 18:25:33 vdr2 vdr: [5337] TS buffer on device 1 thread started (pid=4621, tid=5337, prio=high) Nov 9 20:12:00 vdr2 vdr: [8367] TS buffer on device 2 thread started (pid=4621, tid=8367, prio=high) Nov 9 21:57:57 vdr2 vdr: [11332] TS buffer on device 3 thread started (pid=4621, tid=11332, prio=high) Nov 9 23:13:00 vdr2 vdr: [5337] TS buffer on device 1 thread ended (pid=4621, tid=5337) Nov 9 23:13:00 vdr2 vdr: [5335] buffer stats: 500268 (9%) used Nov 9 23:13:00 vdr2 vdr: [13456] TS buffer on device 1 thread started (pid=4621, tid=13456, prio=high) Nov 9 23:13:01 vdr2 vdr: [4621] buffer stats: 0 (0%) used Nov 9 23:30:00 vdr2 vdr: [4621] buffer stats: 222968 (1%) used Nov 9 23:37:52 vdr2 vdr: [4621] buffer stats: 474136 (2%) used Nov 9 23:37:52 vdr2 vdr: [11332] TS buffer on device 3 thread ended (pid=4621, tid=11332) Nov 9 23:37:52 vdr2 vdr: [11331] buffer stats: 233872 (11%) used Nov 9 23:37:53 vdr2 vdr: [14185] TS buffer on device 3 thread started (pid=4621, tid=14185, prio=high) Nov 10 00:37:14 vdr2 vdr: [4621] buffer stats: 0 (0%) used
Cause was HW unsupported pci hotplug damaged motherboard pci bridge and/or removed antenna signal amplififier.
Now, it's working with best quality on every channel and even faster switch times.
Thank You for VDR.
y tom
You're talking about "xineliboutput" and "libxine", as well as "saa7146", "mantis pci tuner cards" and "Broadcomm's crystalhd decoder". Did you change several of these at the same time?
? I didn't understand that fully.
Yes, the issue is reproducible with both tv card models and linux 3.12.40...6.x drivers.
No, the old crystalhd system is already deactivated and dissassembled for selling to eastern europe.
Can you start from a working system and change only one at a time, to find out which one causes the problem.
Yes, the testing platform is the new DFI x86 I7 System with plenty of ressources using xineliboutput ffmpeg AV software decoding.
Nov 7 18:13:21 vdr2 vdr: [25428] initializing plugin: xineliboutput (2.0.0-cvs): X11/xine-lib Ausgabe-Plugin
I could install e.g. softhddevice to crosscheck if still available in yavdr precision ppa but kaffeine recording works fine?
The issue occurs using production software vdr 2.0.6 AND
using recent VDR and drivers with minidvblinux.de 6.5 live system (xineliboutput).
Both SD (MTV,ARD,ZDF, DELUXE MUSIC) and HD Channels (ARD,ZDF) affected.
I've already increased the libxine buffer:
Nov 8 01:33:22 vdr2 vdr: [6124] [input_vdr] Using non-default "media.xvdr.num_buffers_hd:5000"
It looks like a problem with the high bandwidth ZDF/ARD channels, like we had with the old TT/Siemens full-featured mpeg2 decoder dvb cards but this should not occur with the advanced TDA10023 Tuner cards,
Recordings of the low bandwidth TELE5/DMF SD channels are always ok.
I've recorded TELE5 and DMF channels simultanously for 2h without any buffer overflow in logs.
Nov 8 03:31:31 vdr2 vdr: [9454] buffer usage: 80% (tid=9453) Nov 8 03:31:57 vdr2 vdr: [9454] buffer usage: 60% (tid=9453) Nov 8 03:31:57 vdr2 vdr: [9454] buffer usage: 70% (tid=9453) Nov 8 03:31:57 vdr2 vdr: [9454] buffer usage: 60% (tid=9453) Nov 8 03:36:44 vdr2 vdr: [6108] buffer stats: 0 (0%) used
Recording high bandwidth zdf neo HD simultanously with DMF SD reproduces the issue:
Nov 8 04:28:14 vdr2 vdr: [11341] buffer usage: 80% (tid=11378) Nov 8 04:28:29 vdr2 vdr: [11341] buffer usage: 90% (tid=11378) Nov 8 04:28:32 vdr2 vdr: [11341] buffer usage: 100% (tid=11378) Nov 8 04:28:32 vdr2 vdr: [11341] ERROR: 1 ring buffer overflow (1 bytes dropped) Nov 8 04:28:38 vdr2 vdr: [11341] ERROR: 15000 ring buffer overflows (2820000 bytes dropped) Nov 8 04:28:45 vdr2 vdr: [11341] ERROR: 5570 ring buffer overflows (1047160 bytes dropped) Nov 8 04:28:52 vdr2 vdr: [11341] ERROR: 4974 ring buffer overflows (935112 bytes dropped) Nov 8 04:28:58 vdr2 vdr: [11341] ERROR: 20223 ring buffer overflows (3801924 bytes dropped)
After some Minutes the buffers overflow and the record gets distorted.
LIVE TV works fine.
I've tried stable and testing minidvblinux.de VDR live systems to crosscheck, but same issue occurs.
If I increase the buffer for the saa7164 cards with module parameter it's getting worse and distorted picture and sound.
Any Ideas?
Increase VDR's buffer in source code?
Where's the (ring) buffer code in VDR sources, I try increasing?
Nov 7 05:00:59 vdr2 vdr: [2348] [input_vdr] vdr_plugin_write: buffer overflow ! (2068 bytes) Nov 7 05:01:20 vdr2 vdr: [2348] [input_vdr] vdr_plugin_write: buffer overflow ! (2068 bytes)
What is the correct driver module debug parameter to provide a useful debog log?
There're no buffer options in the mantis kernel driver.
Y tom
Not a DVB drivers or hardware issue.
Good old Kaffeine DVB app recordings are OK, no distorted stream.
VDR BUG!
Can you send me a recording that shows the problem? You can use https://www.transfernow.net to do so.
https://www.transfernow.net/dl/20241108oxywvwO3/xMpWPpc5
ffmpeg analyze log attached here. -Attachment unix encoded TXT-
Klaus
y tom
Hello Klaus,
Am 08.11.24 um 04:35 schrieb schorpp:
Am 07.11.24 um 21:36 schrieb Klaus Schmidinger:
On 06.11.24 04:57, schorpp wrote:
Hello,
I've build a new VDR with h.264 xineliboutput plugin software decoding
and got a problem now with
buffer overruns and distorted recordings on all HD channels:
... Nov 5 05:32:03 vdr2 vdr: [32753] ERROR: 47231 ring buffer overflows (8879240 bytes dropped) Nov 5 05:32:09 vdr2 vdr: [32753] ERROR: 31042 ring buffer overflows (5835896 bytes dropped) Nov 5 05:32:15 vdr2 vdr: [32753] ERROR: 47325 ring buffer overflows (8897100 bytes dropped) Nov 5 05:32:21 vdr2 vdr: [32753] ERROR: 28306 ring buffer overflows (5321528 bytes dropped) Nov 5 05:32:27 vdr2 vdr: [32753] ERROR: 14033 ring buffer overflows (2638204 bytes dropped) ...
This occurs with both saa7146 and mantis pci tuner cards.
This has not occured with the old VDR system using Broadcomm's crystalhd decoder in libxine.
I've FIXED it.
Not yet. It occurs again after some days system uptime.
Nov 9 18:25:33 vdr2 vdr: [5318] buffer stats: 178600 (3%) used Nov 9 18:25:33 vdr2 vdr: [5337] TS buffer on device 1 thread started (pid=4621, tid=5337, prio=high) Nov 9 20:12:00 vdr2 vdr: [8367] TS buffer on device 2 thread started (pid=4621, tid=8367, prio=high) Nov 9 21:57:57 vdr2 vdr: [11332] TS buffer on device 3 thread started (pid=4621, tid=11332, prio=high) Nov 9 23:13:00 vdr2 vdr: [5337] TS buffer on device 1 thread ended (pid=4621, tid=5337) Nov 9 23:13:00 vdr2 vdr: [5335] buffer stats: 500268 (9%) used Nov 9 23:13:00 vdr2 vdr: [13456] TS buffer on device 1 thread started (pid=4621, tid=13456, prio=high) Nov 9 23:13:01 vdr2 vdr: [4621] buffer stats: 0 (0%) used Nov 9 23:30:00 vdr2 vdr: [4621] buffer stats: 222968 (1%) used Nov 9 23:37:52 vdr2 vdr: [4621] buffer stats: 474136 (2%) used Nov 9 23:37:52 vdr2 vdr: [11332] TS buffer on device 3 thread ended (pid=4621, tid=11332) Nov 9 23:37:52 vdr2 vdr: [11331] buffer stats: 233872 (11%) used Nov 9 23:37:53 vdr2 vdr: [14185] TS buffer on device 3 thread started (pid=4621, tid=14185, prio=high) Nov 10 00:37:14 vdr2 vdr: [4621] buffer stats: 0 (0%) used
Cause was HW unsupported pci hotplug damaged motherboard pci bridge and/or removed antenna signal amplififier.
No. dd write speed test showed a regression in the 3.12.40 AHCI SATA driver, HDD write performance dropped down from 60MB/s to 4MB/s on the which is too slow for HDTV or multiple recordings.
After reboot full speed is back. I've upgraded the kernel to the last longterm 4.19.324 stable version to check if this resolves the issue or it is a hardware issue of the
# lspci -vvv -s 00:1f.2 00:1f.2 SATA controller: Intel Corporation 7 Series/C210 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0]) Subsystem: Intel Corporation 7 Series/C210 Series Chipset Family 6-port SATA Controller [AHCI mode] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin B routed to IRQ 32 Region 0: I/O ports at f0d0 [size=8] Region 1: I/O ports at f0c0 [size=4] Region 2: I/O ports at f0b0 [size=8] Region 3: I/O ports at f0a0 [size=4] Region 4: I/O ports at f060 [size=32] Region 5: Memory at f7e36000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Address: fee08004 Data: 4022 Capabilities: [70] Power Management version 3 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-) Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME- Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004 Capabilities: [b0] PCI Advanced Features AFCap: TP+ FLR+ AFCtrl: FLR- AFStatus: TP- Kernel driver in use: ahci
SATA HBA or WDC Drive Firmware.
y tom
It sounds like you've already ruled out hardware and driver issues, which is a solid start. If Kaffeine DVB recordings are fine but VDR is producing a distorted stream, it could be a VDR-specific bug. Have you checked for recent updates or patches? Sometimes, tweaking the buffer settings or testing a different VDR plugin can help.
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-
Klaus Schmidinger -
Marvel Olivia -
schorpp