[mythtv-users] DVB issues-- azap fine -- but lot of Transport Stream Continuity/Uncorrectable error in packets.

Mudit Wahal mwahal at gmail.com
Wed May 18 23:52:26 UTC 2005


I'm in San Francisco Bay Area using HD3000 to get OTA channels. I
can't record/watch channel 36-1 (KICU).

Quick question for any DVB developer, what is "atscsrcid" and how do I
find it ? This channel had for some reason \N \N in its serviceID and
atscsrcid in the dtv_multiplex table. I ran dvbscan to find the
serviceID which is 3. I still dont know what is atscsrcid and how to
get it. I kept trying a number from 1 to 10, but still get same error
messages when trying to record in myth.

>From the mythbackend logfile
2005-05-18 16:41:01.390 mythbackend version: 0.18.20050409-1 www.mythtv.org
2005-05-18 16:41:01.393 Enabled verbose msgs : important general
record playback channel
2005-05-18 16:41:03.391 Reschedule requested for id -1.
2005-05-18 16:41:05.072 Scheduled 34 items in 1.7 = 1.66 match + 0.02 place
2005-05-18 16:41:05.080 Recording starts soon, AUTO-Startup assumed
2005-05-18 16:41:05.083 Started recording "Family Feud" on channel:
1036 on cardid: 1,
sourceid 1
2005-05-18 16:41:05.084 DVB#0 Trying to tune to channel 36_1.
2005-05-18 16:41:05.089 DVB#0  Mod:
2005-05-18 16:41:05.416 DVB#0 Waiting for frontend event after tune.
2005-05-18 16:41:05.748 DVB#0 DVB signal a040 | snr f5ab | ber    0 | unc    0
2005-05-18 16:41:05.750 DVB#0 Status: LOCK.
2005-05-18 16:41:05.751 DVB#0 Multiplex Locked
2005-05-18 16:41:06.697 DVB#0 Successfully tuned to channel 36_1.
2005-05-18 16:41:06.777 DVB#0 Data read from DMX - This is for
debugging with transform
.c
2005-05-18 16:41:07.759 DVB#0 Found keyframe
2005-05-18 16:41:07.762 DVB#0 Found PUSI for PID 49
2005-05-18 16:41:07.789 DVB#0 Found PUSI for PID 52
2005-05-18 16:41:08.405 Uncorrectable error in packet, dropped.
2005-05-18 16:41:09.871 Uncorrectable error in packet, dropped.
2005-05-18 16:41:10.206 Transport Stream Continuity Error. PID = 49
2005-05-18 16:41:10.872 DVB#0 PID 49 _continuity_count 10 cc 12
2005-05-18 16:41:10.879 DVB#0 DVB Buffer overflow error detected on read
2005-05-18 16:41:10.886 Transport Stream Continuity Error. PID = 49
2005-05-18 16:41:10.888 DVB#0 PID 49 _continuity_count 15 cc 2
2005-05-18 16:41:10.890 Transport Stream Continuity Error. PID = 52
2005-05-18 16:41:10.892 DVB#0 PID 52 _continuity_count 6 cc 8
2005-05-18 16:41:12.981 Uncorrectable error in packet, dropped.
2005-05-18 16:41:12.985 Uncorrectable error in packet, dropped.
2005-05-18 16:41:12.987 Uncorrectable error in packet, dropped.
2005-05-18 16:41:12.989 Uncorrectable error in packet, dropped.

================================

When I run azap it seems fine. The "unc" is always 0. That means there
are no uncorrectable errors.

root at mythtvbe:/var/log/mythtv# azap -r KICU
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
tuning to 701000000 Hz
video pid 0x0000, audio pid 0x0000
status 1f | signal dcab | snr f88d | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal 9580 | snr f567 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 00 | signal 3999 | snr d6b5 | ber 00000000 | unc 00000000 | 
status 1f | signal 44dc | snr e3a1 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal 89b9 | snr f179 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal ae55 | snr f4f1 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal 9957 | snr f3fd | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal d3b5 | snr f191 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal d3b5 | snr fa0f | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c459 | snr f723 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal cf9c | snr f8d7 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c2d0 | snr f8d9 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal cb84 | snr f7a9 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
status 1f | signal ad0d | snr cd37 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

================
Output of  dvbscan -c -vvvvv
mythtv at mythtvbe:~$ dvbscan -c -vvvv
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
add_filter:1193: add filter pid 0x0000
start_filter:1133: start filter pid 0x0000 table_id 0x00
update_poll_fds:1113: poll fd 4
add_filter:1193: add filter pid 0x0011
start_filter:1133: start filter pid 0x0011 table_id 0x42
update_poll_fds:1113: poll fd 5
update_poll_fds:1113: poll fd 4
parse_section:981: pid 0x00 tid 0x00 table_id_ext 0x018f, 0/0 (version 1)
PAT
add_filter:1193: add filter pid 0x0030
start_filter:1133: start filter pid 0x0030 table_id 0x02
update_poll_fds:1113: poll fd 6
update_poll_fds:1113: poll fd 5
update_poll_fds:1113: poll fd 4
read_filters:1233: filter done pid 0x0000
remove_filter:1201: remove filter pid 0x0000
stop_filter:1179: stop filter pid 0x0000
update_poll_fds:1113: poll fd 6
update_poll_fds:1113: poll fd 5
parse_section:981: pid 0x30 tid 0x02 table_id_ext 0x0003, 0/0 (version 1)
PMT 0x0030 for service 0x0003
  VIDEO     : PID 0x0031
  OTHER     : PID 0x0034 TYPE 0x81
parse_pmt:798: 0x0000 0x0003: (null) -- (null), pmt_pid 0x0030, vpid
0x0031, apid 0x0000 ()
read_filters:1233: filter done pid 0x0030
remove_filter:1201: remove filter pid 0x0030
stop_filter:1179: stop filter pid 0x0030
update_poll_fds:1113: poll fd 5
WARNING: filter timeout pid 0x0011
remove_filter:1201: remove filter pid 0x0011
stop_filter:1179: stop filter pid 0x0011
dumping lists (1 services)
[0003]                   (0x0003) 00: PCR == V   V 0x0031
Done.

==============================
Output of dvbtraffic
-PID--FREQ-----BANDWIDTH-BANDWIDTH-
0000     9 p/s     1 kb/s    14 kbit
0030     9 p/s     1 kb/s    14 kbit
0031  8159 p/s  1497 kb/s 12271 kbit
0034   157 p/s    28 kb/s   236 kbit
1d00     3 p/s     0 kb/s     5 kbit
1d01     2 p/s     0 kb/s     4 kbit
1d03     3 p/s     0 kb/s     5 kbit
1e00    11 p/s     2 kb/s    17 kbit
1e01     8 p/s     1 kb/s    13 kbit
1e03     2 p/s     0 kb/s     4 kbit
1e80     0 p/s     0 kb/s     1 kbit
1ffb    40 p/s     7 kb/s    60 kbit
1fff  4489 p/s   824 kb/s  6751 kbit
2000 12901 p/s  2368 kb/s 19403 kbit
-PID--FREQ-----BANDWIDTH-BANDWIDTH-
===========================


Thanks

Mudit


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