[mythtv-users] Occasional zero length file from a scheduled recording?

backuppc at sundquist.imapmail.org backuppc at sundquist.imapmail.org
Sat Mar 8 03:21:52 UTC 2008


myth at dermanouelian wrote:

> I've had it happen on my PVR-350/150 and pcHDTV-5500 so I don't think
> it's specific to the card.
> I've tracked it to the point where I see the file being recorded and
> file size increasing, then when it's done, the file is suddenly 0
> bytes. It happens so infrequently that it wasn't worth my time to look
> any further than that. Besides.. it's just TV. ;) 

and

Rod Smith wrote:

> Sorry I missed the original post. I've seen something like this on my system
> occasionally, but only with a Hauppauge PVR-USB2, and usually (only?) when
> the system is under load because of a transcode operation underway or some
> other process. I suspect a driver bug and/or motherboard issues (I've got a
> motherboard with a VIA chipset; I read the warnings about them too late).
> Once the system has produced a 0-length recording, the video device always
> records 0-length files; I've got to manually unload and re-load the driver.
> There are no obvious error messages in the system logs or the kernel ring
> buffer. 

Just to be clear, on my system, I don't get 0 byte files, I get no files
at all.  The "recordings" show up in "manage Recordings", and when I to
delete them they are shown as 0 bytes, but in fact they don't exist at
all.

backend log (note, my daughter had been setting the programs to record
;-):

2008-03-07 07:30:02.744 TVRec(6): Changing from None to RecordingOnly
2008-03-07 07:30:02.753 TVRec(6): HW Tuner: 6->6
2008-03-07 07:30:02.755 HDHRChan(1013a354/1): device found at address
192.168.0.6
2008-03-07 07:30:02.786 Started recording: Clifford's Puppy Days
"Sing-A-Song Norville; Tell Me a Tale": channel 1432 on cardid 6,
sourceid 1
2008-03-07 08:00:00.936 TVRec(6): Changing from RecordingOnly to None
2008-03-07 08:00:00.990 Finished recording Clifford's Puppy Days
"Sing-A-Song Norville; Tell Me a Tale": channel 1432
2008-03-07 08:00:00.990 Reschedule requested for id 0.
2008-03-07 08:00:01.016 Scheduled 7 items in 0.0 = 0.01 match + 0.02
place
2008-03-07 08:30:02.134 TVRec(6): Changing from None to RecordingOnly
2008-03-07 08:30:02.143 TVRec(6): HW Tuner: 6->6
2008-03-07 08:30:02.145 HDHRChan(1013a354/1): device found at address
192.168.0.6
2008-03-07 08:30:02.153 Started recording: Clifford the Big Red Dog
"Clifford's Hiccups; It's My Party": channel 1432 on cardid 6, sourceid
1
2008-03-07 09:00:00.248 TVRec(6): Changing from RecordingOnly to None
2008-03-07 09:00:00.301 Finished recording Clifford the Big Red Dog
"Clifford's Hiccups; It's My Party": channel 1432
2008-03-07 09:00:00.302 Reschedule requested for id 0.
2008-03-07 09:00:00.326 Scheduled 6 items in 0.0 = 0.01 match + 0.02
place

But frontend log (time: after school, daughter checking the recordings
;-):

2008-03-07 15:41:54.137 XMLParse::LoadTheme using
/usr/share/mythtv/themes/Mythbuntu/video-ui.xml
2008-03-07 15:41:54.288 New DB connection, total: 2
2008-03-07 15:41:54.289 Connected to database 'mythconverg' at host:
localhost
2008-03-07 15:42:10.829 XMLParse::LoadTheme using
/usr/share/mythtv/themes/Mythbuntu/ui.xml
2008-03-07 15:42:10.987 Connecting to backend server: 127.0.0.1:6543
(try 1 of 5)
2008-03-07 15:42:10.987 Using protocol version 31
2008-03-07 15:42:11.130 Error: File
'/var/lib/mythtv/recordings/1433_20080307113000.mpg' missing.
2008-03-07 15:42:11.530 Error: File
'/var/lib/mythtv/recordings/1433_20080307113000.mpg' missing.
2008-03-07 15:42:12.030 Error: File
'/var/lib/mythtv/recordings/1433_20080307113000.mpg' missing.
2008-03-07 15:42:12.331 Error: File
'/var/lib/mythtv/recordings/1433_20080307113000.mpg' missing.
2008-03-07 15:42:12.530 Error: File
'/var/lib/mythtv/recordings/1433_20080307113000.mpg' missing.
2008-03-07 15:42:13.030 Error: File
'/var/lib/mythtv/recordings/1433_20080307113000.mpg' missing.
2008-03-07 15:42:13.530 Error: File
'/var/lib/mythtv/recordings/1433_20080307113000.mpg' missing.
2008-03-07 15:42:13.615 Error: File
'/var/lib/mythtv/recordings/1433_20080307103000.mpg' missing.
2008-03-07 15:42:13.876 Error: File
'/var/lib/mythtv/recordings/1432_20080307093000.mpg' missing.
2008-03-07 15:42:14.030 Error: File
'/var/lib/mythtv/recordings/1432_20080307093000.mpg' missing.
2008-03-07 15:42:14.126 Error: File
'/var/lib/mythtv/recordings/1432_20080307083000.mpg' missing.
2008-03-07 15:42:14.530 Error: File
'/var/lib/mythtv/recordings/1432_20080307083000.mpg' missing.
2008-03-07 15:42:15.030 Error: File
'/var/lib/mythtv/recordings/1432_20080307083000.mpg' missing.
2008-03-07 15:42:15.530 Error: File
'/var/lib/mythtv/recordings/1432_20080307083000.mpg' missing.
2008-03-07 15:42:16.030 Error: File
'/var/lib/mythtv/recordings/1432_20080307083000.mpg' missing.
2008-03-07 15:42:16.530 Error: File
'/var/lib/mythtv/recordings/1432_20080307083000.mpg' missing.
2008-03-07 15:42:16.929 Error: File
'/var/lib/mythtv/recordings/1432_20080307073000.mpg' missing.

etc.

----

I have switched the tuner priorities back to all "0" so that the system
will go back to defaulting to the 5500 (tuner #1) in recording.  I'll
see if that brings back tHe recordings.  The HDHR still has MUCH poorer
reception than the 5500 tonight.

For comparison, backend log from successful recording using the 5500:

2008-03-04 07:30:02.769 TVRec(1): Changing from None to RecordingOnly
2008-03-04 07:30:02.794 TVRec(1): HW Tuner: 1->1
2008-03-04 07:30:02.806 DVBChan(0) Warning: Symbol Rate setting (0) is
out of range (min/max:5056941/10762000)
2008-03-04 07:30:02.830 Started recording: Clifford's Puppy Days
"Something Special; Shun Gets in the Game": channel 1432 on cardid 1,
sourceid 1
2008-03-04 08:00:00.903 TVRec(1): Changing from RecordingOnly to None
2008-03-04 08:00:00.909 Finished recording Clifford's Puppy Days
"Something Special; Shun Gets in the Game": channel 1432
2008-03-04 08:00:00.961 Reschedule requested for id 0.
2008-03-04 08:00:01.253 Scheduled 24 items in 0.3 = 0.01 match + 0.29
place
2008-03-04 08:00:01.358 Finished recording Clifford's Puppy Days
"Something Special; Shun Gets in the Game": channel 1432

J.S.


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