[confirm] RTSP streaming issue (seek beyond the end infinite loop) (1 Viewer)

[arion_p]

Try DebugView on the server. It will show some extra logging. You can capture the logs to a file and post it here.

DebugView for Windows

Also TsWriter.log might provide some more info, as it is responsible for creating/reusing the timeshift buffer files.

 

[romuz]

Its tswriter from yesterday Incident, but its empty for issue period(never seen logs about creating reusing files in it before)

 

[romuz]

Hi Arion
I have gathered a logs with DebugView

and only one abnormal thing i ca see in it. Its a nextStartPosition which sometimes goes beyond if i correctly feeling what is going on in sources
in my setup i use 20 timeshift files with 50 megs

Most of the time when reusing file i see nextStartPosition = 1000000000 ( 50000000 * 20 )

00014792	21:51:15	[2760] Old file reused : R:\\live2-0.ts.tsbuffer8.ts	
00014793	21:51:15	[2760] Files Added 1, Removed 1	
00014794	21:51:15	[2760] Removing file R:\\live2-0.ts.tsbuffer8.ts	
00014795	21:51:15	[2760] Adding file R:\\live2-0.ts.tsbuffer8.ts (1000000000)

but sometimes it starting to grow ahead

00021691	22:08:42	[2760] Old file reused : R:\\live2-0.ts.tsbuffer16.ts	
00021692	22:08:42	[2760] Files Added 1, Removed 1	
00021693	22:08:42	[2760] Removing file R:\\live2-0.ts.tsbuffer16.ts	
00021694	22:08:42	[2760] Adding file R:\\live2-0.ts.tsbuffer16.ts (1050000000)	

00022346	22:11:19	[2760] Old file reused : R:\\live2-0.ts.tsbuffer17.ts	
00022347	22:11:19	[2760] Files Added 1, Removed 1	
00022348	22:11:19	[2760] Removing file R:\\live2-0.ts.tsbuffer17.ts	
00022349	22:11:19	[2760] Adding file R:\\live2-0.ts.tsbuffer17.ts (1100000000)

00022980	22:13:56	[2760] Old file reused : R:\\live2-0.ts.tsbuffer18.ts	
00022981	22:13:56	[2760] Files Added 1, Removed 1	
00022982	22:13:56	[2760] Removing file R:\\live2-0.ts.tsbuffer18.ts	
00022983	22:13:56	[2760] Adding file R:\\live2-0.ts.tsbuffer18.ts (1150000000)

Total file count stays 20

 

[arion_p]

You are seeing logging from both MultiFileWriter in TsWriter (offset keeps increasing because TsWriter does not close and reopen the ts buffer, so it knows where it left off) and MultiFileReader in StreamingServer (every 5 secs it opens the ts buffer to calculate its length, it does not keep it open because that would prevent MultiFileWriter from reusing buffers).

On first look there are two issues I see but I'll have to check the code to see if it is normal or not:

1. At some point when total amount of data written to ts buffers (including ones that have now been overwritten) exceeds 2^31 (after the offset 2100000000 is logged) the offset rolls over to negative numbers. This is because MultiFileWriter uses 32 bit integers instead of 64 bit (this should probably be fixed but might need a change in tsbuffer format)
2. Each time MultiFileReader opens the tsbuffer it adds and removes an increasing number of files. The difference stays at 20 but it adds for example 51 files then remove 31 of them. These numbers increase by one each time a buffer is reused. I am not sure if this is not normal but seems suspect. I'll have to check.

 

[romuz]

You are seeing logging from both MultiFileWriter in TsWriter (offset keeps increasing because TsWriter does not close and reopen the ts buffer, so it knows where it left off) and MultiFileReader in StreamingServer (every 5 secs it opens the ts buffer to calculate its length, it does not keep it open because that would prevent MultiFileWriter from reusing buffers).

On first look there are two issues I see but I'll have to check the code to see if it is normal or not:

1. At some point when total amount of data written to ts buffers (including ones that have now been overwritten) exceeds 2^31 (after the offset 2100000000 is logged) the offset rolls over to negative numbers. This is because MultiFileWriter uses 32 bit integers instead of 64 bit (this should probably be fixed but might need a change in tsbuffer format)
2. Each time MultiFileReader opens the tsbuffer it adds and removes an increasing number of files. The difference stays at 20 but it adds for example 51 files then remove 31 of them. These numbers increase by one each time a buffer is reused. I am not sure if this is not normal but seems suspect. I'll have to check.

First issue only logging issue because it is converted from 64 to 32 bit for printing to log
64 bit inside used so its ok
And i dont see such logging in MultiFileWriter but in MultiFileReader its present. So i think it goes from MultiFileReader

MultiFileWriter only says New file created or Old file reused
All other goes from MultiFileReader

 

[wupperi]

AW: RTSP streaming issue (seek beyond the end infinite loop)

Seeing the same issue in LiveTV in RC2 here (pixelated picture and choppy sound):

In tswriter:

30-04-2010 21:25:15.326 Seeking beyond the end position: 9008363488 > 5168370456
30-04-2010 21:25:15.721 generateSDPDescription() duration 1414.500000 : a=range:npt=0-1414.500

But nothing else related to this issue in other logs. Cueing in timeshift buffer -15sec always temporarily solves the problem.
Anything I can do to help you guys finding out what the issue is?

wupperi