When Streaming - 'dd' Value too large for defined data type

[rogerx . oss]

I have a script which uses 'dd' (instead of 'cat') for capturing a timed DVB 
stream or feed for 30, 60, 90, ... minutes.  (From memory, I stopped using 
'cat' a long time ago either because 'cat' had problems with TV channels 
containing static or due to large file size.)

A sporadic error received when using 'dd' is the following:

--- Snip ---
/mnt/archives1/tv/20140611-1700-ch9.1-60min.mpg                                 
                                                            
dd: error reading '/dev/dvb/adapter0/dvr0': Value too large for defined data 
type                                                           
73145+0 records in                                                              
                                                            
73145+0 records out                                                             
                                                            
37450240 bytes (37 MB) copied, 38.2406 s, 979 kB/s                              
                                                            
dd: warning: invalid file offset after failed read
--- Snip ---

My guess is, since dd doesn't know the exact initial size or the proper number 
of interval bytes, dd spawns this error.  Or, there maybe static within the 
signal or overload.  Although my rational doesn't seem to match the given 
error, sometimes errors might be just generic in a sense.  (ie. 'dd' was likely 
engineered for file copying, and copying a live stream was later.)

My second guess, there's likely no way to avert the error and is likely a 
harmless error.

Channel 9.1 is PBS at my location over DVB TV, a large file at times:
VIDEO:  MPEG2  1280x720  (aspect 3)  59.940 fps  24000.0 kbps (3000.0 kbyte/s)
AUDIO: 48000 Hz, 2 ch, ac3be, 384.0 kbit/25.00% (ratio: 48000->192000)

Bottom line, the recorded video file (stream) looks just fine and I don't think 
I've ever seen any anomalies.  If any video/audio problems created by this 
error, I've never see a player or editor complain, or the editor automatically 
fixes the file.

-- 
Roger
http://rogerx.freeshell.org/