[mythtv-users] transcode not working

Fri Jan 6 03:47:14 UTC 2012

> Message: 7
> Date: Thu, 05 Jan 2012 13:31:20 -0500
> From: Raymond Wagner <raymond at wagnerrp.com>
> Subject: Re: [mythtv-users] transcode not working
> To: Discussion about MythTV <mythtv-users at mythtv.org>
> Message-ID: <4F05EC78.5020201 at wagnerrp.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 1/5/2012 13:01, Josh Rosenberg wrote:
>> On Thu, Jan 5, 2012 at 12:31 PM,  Raymond Wagner<raymond at wagnerrp.com>  wrote:
>>> You've got something seriously funky going on there.  That_really_is_
>>> raw QAM, all 38.4Mbps of it.  A typical HD recording should be closer to
>>> 16Mbps, or maybe 25-30GB for the whole 4-hr recording.
>> So it seems that I accidentally picked an atypical example; most of my
>> recordings are closer to either 3.8 GB/hr or 5.6 GB/hr.
>
> Accidental or not, that's downright broken.  If you happen to have any
> logs from that incident, or any other recordings displaying that
> behavior, it would be very interesting to see.  Do you ever access the
> device with QuickTV or something else that may have disrupted the PID
> filtering?

No, I don't access the device with anything else (I don't know what
QuickTV or PID are).  The logs are at the bottom of this email if
you're curious, but I don't think this is related to my transcoding
issues...

>> Regardless, though, there are some things that I'd be happy to keep
>> around at a rate closer to 1 GB/hr, and transcoding isn't doing
>> anything now.
>
> If you really want to transcode, don't use mythtranscode.  You're just
> going to end up with clumsy MPEG4 in a NUV.  No one else plays NUV, no
> one likes NUV, and on the occasions there have been discussions among
> the developers about replacing it with something else, the only
> opposition tends to be (the lack of) motivation.  Use something
> external.  Transcode to h264, and a more common container like mp4 or
> mkv.  There are various scripts floating about to do this using ffmpeg,
> mencoder, or handbrakecli.

What I'm looking for is a way to keep these videos in "Watch
Recordings" (not "Watch Videos"), but have them be smaller.  I don't
care about formats as much.  (I might also explore ways to transcode
for archiving outside mythtv, but one project at a time.)  Isn't that
what the built-in transcoder should be doing?  Is there another way to
accomplish this goal?  I don't think lossless transcoding to delete
commercials and other downtime will meet my needs, because I want to
do this quickly without taking the time to create a cutlist.

> Message: 12
> Date: Thu, 05 Jan 2012 11:00:34 -0800
> From: jk90090 <jk90090 at gmail.com>
> Subject: Re: [mythtv-users] transcode not working
> To: mythtv-users at mythtv.org
> Message-ID: <4F05F352.8080702 at gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Josh, might be wise to see if you can transcode using ffmpeg on that
> recording and report back.  I've been reading mixed success using the
> internal 'transcode' option versus a user-defined script that does it.
> I personally have no problem with the internal ones I have setup, but at
> one point after an upgrade it just stopped working outright and it had
> something to do with settings for it in the database.  The problem for
> me was resolved by going into the settings and just clicking through
> them again (no changes at all) and 'finishing' their setup and voila
> things worked again.

What ffmpeg options would you suggest I use for this test?

> Curious, how long have you been running your setup?  I've been all the
> way back to 0.17 or something, and I'm sure through the various upgrade
> something has been forgotten/missed, hence the gremlins I had encountered.

Not that long; maybe 14 months?  Since 0.23.

Thanks,
Josh

Logs for Raymond:
2012-01-01 12:54:02.310 Started recording: "NFL Football":"Washington
Redskins at Philadelphia Eagles": channel 1291 on cardid 1, sourceid 1
2012-01-01 12:54:02.915 Updating status for "NFL Football":"Washington
Redskins at Philadelphia Eagles" on cardid 1 (Tuning => Recording)
2012-01-01 12:54:02.974 TVRec(1): rec->GetPathname():
'/var/lib/mythtv/recordings/1291_20120101125400.mpg'
2012-01-01 13:01:35.545 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 13:15:36.004 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 13:17:03.395 MainServer::ANN Monitor
2012-01-01 13:17:03.447 adding: josh-myth as a client (events: 2)
2012-01-01 13:17:04.615 MainServer::ANN Monitor
2012-01-01 13:17:04.635 adding: josh-myth as a client (events: 2)
2012-01-01 13:29:36.466 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 13:43:36.927 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 13:57:37.382 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 14:11:37.845 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 14:17:02.346 MainServer::ANN Monitor
2012-01-01 14:17:02.383 adding: josh-myth as a client (events: 2)
2012-01-01 14:17:05.168 MainServer::ANN Monitor
2012-01-01 14:17:05.203 adding: josh-myth as a client (events: 2)
2012-01-01 14:25:38.312 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 14:39:38.779 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 14:53:39.242 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 15:07:39.701 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 15:17:01.955 MainServer::ANN Monitor
2012-01-01 15:17:01.991 adding: josh-myth as a client (events: 2)
2012-01-01 15:17:03.885 MainServer::ANN Monitor
2012-01-01 15:17:04.019 adding: josh-myth as a client (events: 2)
2012-01-01 15:21:40.156 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 15:35:40.620 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 15:49:41.086 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 16:03:41.554 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 16:17:02.811 MainServer::ANN Monitor
2012-01-01 16:17:02.837 adding: josh-myth as a client (events: 2)
2012-01-01 16:17:03.741 MainServer::ANN Monitor
2012-01-01 16:17:03.761 adding: josh-myth as a client (events: 2)
2012-01-01 16:17:42.048 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 16:17:42.498 Expiring 24725 MB for 1291 at
2010-10-17T19:58:00 => "MLB Baseball":"San Francisco Giants at
Philadelphia Phillies"
2012-01-01 16:17:42.554 Reschedule requested for id 0.
2012-01-01 16:17:42.994 Scheduled 72 items in 0.4 = 0.03 match + 0.40 place
2012-01-01 16:17:51.052 Reschedule requested for id 0.
2012-01-01 16:17:51.471 Scheduled 72 items in 0.4 = 0.02 match + 0.39 place
2012-01-01 16:31:42.560 AutoExpire: CalcParams(): Max required Free
Space: 22.0 GB w/freq: 14 min
2012-01-01 16:45:00.228 TVRec(1): Changing from RecordingOnly to None
2012-01-01 16:45:00.263 Updating status for "NFL Football":"Washington
Redskins at Philadelphia Eagles" on cardid 1 (Recording => Recorded)
2012-01-01 16:45:00.282 Finished recording NFL Football "Washington
Redskins at Philadelphia Eagles": channel 1291
2012-01-01 16:45:00.313 Reschedule requested for id 0.
2012-01-01 16:45:00.690 Finished recording NFL Football "Washington
Redskins at Philadelphia Eagles": channel 1291
2012-01-01 16:45:00.837 Scheduled 71 items in 0.5 = 0.06 match + 0.46 place
2012-01-01 16:45:02.164 MainServer::ANN Monitor
2012-01-01 16:45:02.267 adding: josh-myth as a client (events: 0)
2012-01-01 16:45:02.328 MainServer::ANN Monitor
2012-01-01 16:45:02.387 adding: josh-myth as a client (events: 1)
2012-01-01 16:45:43.012 AutoExpire: CalcParams(): Max required Free
Space: 20.0 GB w/freq: 15 min
2012-01-01 16:45:54.170 JobQueue: Commercial Detection Starting for
"NFL Football":"Washington Redskins at Philadelphia Eagles" recorded
from channel 1291 at 2012-01-01T12:54:00
2012-01-01 16:45:54.348 Using runtime prefix = /usr
2012-01-01 16:45:54.370 Using configuration directory = /home/mythtv/.mythtv
2012-01-01 16:45:54.383 Empty LocalHostName.
2012-01-01 16:45:54.394 Using localhost value of josh-myth
2012-01-01 16:45:54.416 New DB connection, total: 1
2012-01-01 16:45:54.423 Connected to database 'mythconverg' at host: localhost
2012-01-01 16:45:54.458 Closing DB connection named 'DBManager0'
2012-01-01 16:45:54.467 Connected to database 'mythconverg' at host: localhost
2012-01-01 16:45:54.480 Current locale EN_US
2012-01-01 16:45:54.490 Reading locale defaults from
/usr/share/mythtv//locales/en_us.xml
2012-01-01 16:45:54.509 Loading en_us translation for module mythfrontend
2012-01-01 16:45:54.623 MythCoreContext: Connecting to backend server:
127.0.0.1:6543 (try 1 of 1)
2012-01-01 16:45:54.647 Using protocol version 63
2012-01-01 16:45:54.658 MainServer::ANN Monitor
2012-01-01 16:45:54.670 adding: josh-myth as a client (events: 0)
2012-01-01 16:45:54.683 MainServer::ANN Monitor
2012-01-01 16:45:54.694 adding: josh-myth as a client (events: 1)
2012-01-01 16:45:56.816
RingBuf(/var/lib/mythtv/recordings/1291_20120101125400.mpg): Waited
2.0 seconds for data
2012-01-01 16:45:57.171 AFD: Opened codec 0xb550e0c0, id(MPEG2VIDEO) type(Video)
2012-01-01 16:45:57.190 AFD: codec AC3 has 6 channels
2012-01-01 16:45:57.203 AFD: Opened codec 0xb55144a0, id(AC3) type(Audio)
2012-01-01 16:45:57.660 AFD: Audio stream changed