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Lossless Transcode with MythTV 0.20.2 Broken? http://forum.linhes.org/viewtopic.php?f=17&t=16493 |
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Author: | mihanson [ Thu Sep 13, 2007 3:27 pm ] |
Post subject: | Lossless Transcode with MythTV 0.20.2 Broken? |
Is it just me or is lossless transcoding (specifically of High Definition recordings) broken with MythTV 0.20.2? I can't seem to get it to work. I recently upgraded my working MBE with R5F1 to MythTV 0.20.2 following Cecil's instructions. All went well. The other night I was trying to transcode an episode of Conan O'Brien using a cut list to preserve only the musical performance. I'm gunning for a lossless transcode. The show was recorded on a HD-3000 set up as a DVB card. When the transcode job runs, it fails. The mythbackend.log reveals: Code: 2007-09-13 12:43:53.753 JobQueue: Transcode Starting for Late Night With Conan O'Brien: 6.7 GB (High Quality) transcode v1.0.2 (C) 2001-2003 Thomas Oestreich, 2003-2004 T. Bitterberg 'transcode -h | more' shows a list of available command line options. 2007-09-13 12:43:53.863 JobQueue: Transcode Errored: Late Night With Conan O'Brien: (High Quality) There's not much to go on there. Taking a look into the DB, my jobqueue table has this: Code: mysql> Select * from jobqueue; +-----+--------+---------------------+---------------------+------+------+------ | id | chanid | starttime | inserttime | type | cmds | flags | status | statustime| hostname | args | comment | +-----+--------+---------------------+---------------------+------+------+------ | 534 | 1041 | 2007-09-11 00:37:00 | 2007-09-12 22:35:11 | 1 | 0 | 1 | 304 | 2007-09-13 12:43:53 | mythbox | | Transcode failed with status: 1 | I see the Status 304 code. That's not good. Code: mysql> select * from recordingprofiles; +----+----------------+-------------------------+-------------------------+--------------+ | id | name | videocodec | audiocodec | profilegroup | +----+----------------+-------------------------+-------------------------+--------------+ | 1 | Default | NULL | NULL | 1 | | 2 | Live TV | NULL | NULL | 1 | | 3 | High Quality | NULL | NULL | 1 | | 4 | Low Quality | NULL | NULL | 1 | | 5 | Default | MPEG-2 Hardware Encoder | MPEG-2 Hardware Encoder | 2 | | 6 | Live TV | MPEG-2 Hardware Encoder | MPEG-2 Hardware Encoder | 2 | | 7 | High Quality | MPEG-2 Hardware Encoder | MPEG-2 Hardware Encoder | 2 | | 8 | Low Quality | MPEG-2 Hardware Encoder | MPEG-2 Hardware Encoder | 2 | | 9 | Default | NULL | NULL | 3 | | 10 | Live TV | NULL | NULL | 3 | | 11 | High Quality | NULL | NULL | 3 | | 12 | Low Quality | NULL | NULL | 3 | | 13 | Default | NULL | NULL | 4 | | 14 | Live TV | NULL | NULL | 4 | | 15 | High Quality | NULL | NULL | 4 | | 16 | Low Quality | NULL | NULL | 4 | | 17 | Default | NULL | NULL | 5 | | 18 | Live TV | NULL | NULL | 5 | | 19 | High Quality | NULL | NULL | 5 | | 20 | Low Quality | NULL | NULL | 5 | | 21 | RTjpeg/MPEG4 | RTjpeg | MP3 | 6 | | 22 | MPEG2 | RTjpeg | MP3 | 6 | | 23 | Default | NULL | NULL | 8 | | 24 | Live TV | NULL | NULL | 8 | | 25 | High Quality | NULL | NULL | 8 | | 26 | Low Quality | NULL | NULL | 8 | | 27 | High Quality | RTjpeg | MP3 | 6 | | 28 | Medium Quality | MPEG-4 | MP3 | 6 | | 29 | Low Quality | MPEG-4 | MP3 | 6 | | 30 | Default | NULL | NULL | 10 | | 31 | Live TV | NULL | NULL | 10 | | 32 | High Quality | NULL | NULL | 10 | | 33 | Low Quality | NULL | NULL | 10 | | 34 | Default | NULL | NULL | 11 | | 35 | Live TV | NULL | NULL | 11 | | 36 | High Quality | NULL | NULL | 11 | | 37 | Low Quality | NULL | NULL | 11 | | 38 | Default | NULL | NULL | 12 | | 39 | Live TV | NULL | NULL | 12 | | 40 | High Quality | NULL | NULL | 12 | | 41 | Low Quality | NULL | NULL | 12 | +----+----------------+-------------------------+-------------------------+--------------+ 41 rows in set (0.00 sec) Code: mysql> select * from profilegroups; +----+----------------------------------------------------------+-----------+------------+----------+ | id | name | cardtype | is_default | hostname | +----+----------------------------------------------------------+-----------+------------+----------+ | 1 | Software Encoders (v4l based) | V4L | 1 | NULL | | 2 | MPEG-2 Encoders (PVR-x50, PVR-500) | MPEG | 1 | NULL | | 3 | Hardware MJPEG Encoders (Matrox G200-TV, Miro DC10, etc) | MJPEG | 1 | NULL | | 4 | Hardware HDTV | HDTV | 1 | NULL | | 5 | Hardware DVB Encoders | DVB | 1 | NULL | | 6 | Transcoders | TRANSCODE | 1 | NULL | | 7 | FireWire Input | FIREWIRE | 1 | NULL | | 8 | USB Mpeg-4 Encoder (Plextor ConvertX, etc) | GO7007 | 1 | NULL | | 9 | DBOX2 Input | DBOX2 | 1 | NULL | | 10 | Freebox Input | Freebox | 1 | NULL | | 11 | HDHomeRun Recorders | HDHOMERUN | 1 | NULL | | 12 | CRC IP Recorders | CRC_IP | 1 | NULL | +----+----------------------------------------------------------+-----------+------------+----------+ 12 rows in set (0.00 sec) Code: mysql> select * from codecparams where (profile='2' OR profile='5' OR profile='6'); +---------+--------------------------+-----------+ | profile | name | value | +---------+--------------------------+-----------+ | 5 | autotranscode | 0 | | 5 | width | 720 | | 5 | height | 480 | | 5 | rtjpegquality | 170 | | 5 | rtjpeglumafilter | 0 | | 5 | rtjpegchromafilter | 0 | | 5 | mpeg4bitrate | 2200 | | 5 | mpeg4maxquality | 2 | | 5 | mpeg4minquality | 15 | | 5 | mpeg4qualdiff | 3 | | 5 | mpeg4scalebitrate | 1 | | 5 | mpeg4optionvhq | 0 | | 5 | mpeg4option4mv | 0 | | 5 | mpeg4optionidct | 0 | | 5 | mpeg4optionime | 0 | | 5 | hardwaremjpegquality | 100 | | 5 | hardwaremjpeghdecimation | 4 | | 5 | hardwaremjpegvdecimation | 4 | | 5 | mpeg2streamtype | MPEG-2 PS | | 5 | mpeg2aspectratio | 4:3 | | 5 | mpeg2bitrate | 3000 | | 5 | mpeg2maxbitrate | 3500 | | 5 | samplerate | 48000 | | 5 | mp3quality | 7 | | 5 | volume | 90 | | 5 | mpeg2audtype | Layer II | | 5 | mpeg2audbitratel1 | 448 | | 5 | mpeg2audbitratel2 | 384 | | 5 | mpeg2audvolume | 88 | | 6 | autotranscode | 0 | | 6 | width | 720 | | 6 | height | 480 | | 6 | rtjpegquality | 170 | | 6 | rtjpeglumafilter | 0 | | 6 | rtjpegchromafilter | 0 | | 6 | mpeg4bitrate | 2200 | | 6 | mpeg4maxquality | 2 | | 6 | mpeg4minquality | 15 | | 6 | mpeg4qualdiff | 3 | | 6 | mpeg4scalebitrate | 1 | | 6 | mpeg4optionvhq | 0 | | 6 | mpeg4option4mv | 0 | | 6 | mpeg4optionidct | 0 | | 6 | mpeg4optionime | 0 | | 6 | hardwaremjpegquality | 100 | | 6 | hardwaremjpeghdecimation | 4 | | 6 | hardwaremjpegvdecimation | 4 | | 6 | mpeg2streamtype | MPEG-2 PS | | 6 | mpeg2aspectratio | 4:3 | | 6 | mpeg2bitrate | 3000 | | 6 | mpeg2maxbitrate | 3500 | | 6 | samplerate | 48000 | | 6 | mp3quality | 7 | | 6 | volume | 90 | | 6 | mpeg2audtype | Layer II | | 6 | mpeg2audbitratel1 | 448 | | 6 | mpeg2audbitratel2 | 384 | | 6 | mpeg2audvolume | 88 | +---------+--------------------------+-----------+ 58 rows in set (0.00 sec) Code: mysql> select * from settings where value LIKE '%transcode%'; +-----------------------------------+-----------+---------------+ | value | data | hostname | +-----------------------------------+-----------+---------------+ | DefaultTranscoder | 27 | NULL | | JobAllowTranscode | 1 | mythbox | | AutoTranscodeBeforeAutoCommflag | 0 | NULL | | AutoTranscode | 0 | NULL | | TranscodeCommand | transcode | mythbox | | MTDConcurrentTranscodes | 1 | mythbox | | JobQueueTranscodeCommand | transcode | NULL | | MythArchiveAlwaysUseMythTranscode | 1 | mythbox | | MythArchiveAlwaysUseMythTranscode | 1 | mythbox-rfe-2 | | TranscodeCommand | transcode | mythbox-rfe-2 | | MTDConcurrentTranscodes | 1 | mythbox-rfe-2 | | TranscodeCommand | transcode | mythbox-rfe-1 | | MTDConcurrentTranscodes | 1 | mythbox-rfe-1 | | mythvideo.TrustTranscodeFRDetect | 1 | mythbox | | mythvideo.TrustTranscodeFRDetect | 1 | mythbox-rfe-2 | +-----------------------------------+-----------+---------------+ 15 rows in set (0.00 sec) I do not transcode very often, so I'm unsure of what's right and what's wrong. When I use mythtranscode from the command line, I get a file that's about the same size of the original! ![]() Code: $ mythtranscode -m -l -p autodetect --showprogress -v all,nodatabase -i /myth/tv/1041_20070911003700.mpg -o /myth/tv/new_file.mpg
$ ls -l /myth/tv/1041_20070911003700.mpg -rw-r--r-- 1 mythtv mythtv 7171526772 Sep 11 01:36 /myth/tv/1041_20070911003700.mpg $ ls -l /myth/tv/new_file.mpg -rw-r--r-- 1 mythtv mythtv 7085463556 Sep 13 13:41 /myth/tv/new_file.mpg I found this ticket from April 2007: http://svn.mythtv.org/trac/ticket/3274 but there's no update on it's status. I'm really confused as to what's going on. I don't transcode much, so I don't know if this is directly related to the 0.20.2 upgrade or not. Anyone else having problems? |
Author: | tjc [ Thu Sep 13, 2007 7:18 pm ] |
Post subject: | Re: Lossless Transcode with MythTV 0.20.2 Broken? |
mihanson wrote: Is it just me or is lossless transcoding (specifically of High Definition recordings) broken with MythTV 0.20.2?
Seems to be working well for SDTV. Not exactly what you asked, but at least a data point. I also don't remember seeing any complaints about transcoding in the testing versions prior to the release. Maybe someone else can chime in with more specific info... |
Author: | mihanson [ Thu Sep 13, 2007 9:23 pm ] |
Post subject: | |
I have not tried SDTV recordings yet, but I've made some progress. Going on a tip from this thread on the MythTV mailing list, I tried to call the file with the -c and -s switches instead of by file name (-i). Code: nice -n 19 mythtranscode -m -l -p autodetect --showprogress -c 1041 -s 20070911003700 -o /myth/tv/new_file.mpg
and it works! ![]() |
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