[mythtv-users] mythburn - wow - this takes a LOOOONG time...

[Paul]

----- Original Message ----- 
From: "Jesse Guardiani" <jesse at wingnet.net>
To: "Discussion about mythtv" <mythtv-users at mythtv.org>
Sent: Sunday, September 18, 2005 4:34 PM
Subject: Re: [mythtv-users] mythburn - wow - this takes a LOOOONG time...


<snip>

> 1.) I'm not sure if that's possible.
> 2.) I'm not sure it has actually gotten around to transcoding anything
>     yet. I think it's just demuxing! And it's been going for 7 hours...
> 
> Here's the comand line it's using:
> 
> /usr/share/mythburn/mythtvburn.sh 'ntsc' 'grey.png' \
> 'menumusic.mp2' 'yes' 'no' 'no' 'bar.png' 'no' 'no' \
> 'no' '1170_20050819193000_20050819200000.nuv' \
> 'cut' > /usr/share/mythburn/temp/mythburn.log 2>&1 &
> 
> And here's the log:
> 
> 
> MythBurn Script is running as user apache
> Video format = ntsc
> Background image = /usr/share/mythburn/images/backgrounds/grey.png
> Background music = /usr/share/mythburn/music/menumusic.mp2
> Make ISO image = yes
> Burn to DVD-R = no
> Delete VIDEO_TS = no
> Highlight image = bar.png
> Animated thumbnails = no
> Chapter Submenus = no
> Recode to AC3 = no
> Creating DVD at 18-09-2005 03:40....
> Total file size of video files is 982 Mbytes
> QSettings: error creating /.qt
> Multiplexing MPEG2 video files to DVD format and applying cutlists
> ----- datestamp=18-09-2005 03:40
> ----- datestamp=18-09-2005 03:40
> 1170_20050819193000_20050819200000.nuv
> try to cut commercials using mythtv cutlist
> cutlist found, applying and remultiplexing for DVD format
> Filename "/share/tv/1170_20050819193000_20050819200000.nuv"
> OutFile "/usr/share/mythburn/temp/1170_20050819193000_20050819200000.nuv"
> Cutting out commercials + demultiplexing with projectx
> use last config or standard ...
> ProjectX 0.82.1.02_b2/06.06.2005 TEST PROJECT ONLY , User: apache
> 
> quick CL usage: (Note: CL also loads the GUI components, without displaying)
> without options  ...to start the GUI
> [options] <sourcefile 1>...[<sourcefile x>]
> 
> options: -dvx1..4, -c <x>, -o <x>, -n <x>, -l, -p <x>, -i <x>, -g
> -c [path]inifile  ...use that specified iniFile instead of the standard
> -dvx1  ...create a .d2v ProjectFile on demux
> -dvx2  ...create a .d2v ProjectFile + .ac3.wav (RIFF WAVE Header)
> -dvx3  ...create a .d2v ProjectFile + .mpa.wav (RIFF WAVE Header)
> -dvx4  ...create a .d2v ProjectFile + .ac3.wav + mpa.wav (RIFF WAVE Header)
> -o <path>  ...use that specified directory for output
> -n <filename>  ...use that specified filename for output
> -p <file>  ...use that text based file as cutpoint list
> -i <tokens>  ...use only these (P)IDs, separated by comma ","
> -g  ...display the GUI using all given CLI options
> -l  ...write the normal logfile
> use -dvx OR -c & -o/-n/-l/-p/-i/-g or no options (for std)
> 
> java.version    1.4.2-02
> java.vendor     Blackdown Java-Linux Team
> java.home       /opt/blackdown-jdk-1.4.2.02/jre
> java.vm.version Blackdown-1.4.2-02
> java.vm.vendor  Blackdown Java-Linux Team
> java.vm.name    Java HotSpot(TM) Client VM
> java.class.vers 48.0
> java.class.path /usr/share/projectx/ProjectX.jar
> 
> 
> TERMS AND CONDITIONS:
> (1) this is a free Java based demux utility.
> (2) It is intended for educational purposes only, as a non-commercial test proje
> ct.
> (3) It may not be used otherwise. Most parts are only experimental.
> (4) released under the terms of the GNU GPL.
> (5) there is NO WARRANTY of any kind attached to this software.
> (6) use it at your own risk and for your own education as it was meant.
> 
> -> to agree to these terms you have to start the GUI first
> ^MSunday, September 18, 2005  3:40:34 AM EDT
> ^MProjectX 0.82.1.02_b2 (06.06.2005)
> 
> ^M<<< session infos >>>
> ^M-> working with collection 0
> ^M
> ^M-> normal log file
> ^M-> write all video data
> ^M-> write all other data
> ^M-> patch c.d.flagged infos of pictures
> ^M-> add sequence end code
> ^M-> set resolution in SDE
> ^M
> ^M-> write output files to: ./
> ^M-> 1 cutpoint(s) defined ( (2) use Frame number for cuts )
> 
> ^M-> Input File 0:  /share/tv/1170_20050819193000_20050819200000.nuv (1028543936
>  bytes)
> ^M-> File is MPEG-2 PS/SS (Video/Audio PES)
> ^M-> demux
> ^M1% demuxing A/V PES file 1170_20050819193000_20050819200000.nuv^M-> found PES-
> ID 0xE0 (MPEG Video) @ 38
> ^M!> missing startcode @ 2062
> ^M!> found startcode @ 2064
> ^M-> found PES-ID 0xBD (private stream 1) (SubID 0x69)-> ignored @ 2064
> ^M-> found PES-ID 0xC0 (MPEG Audio) @ 2194
> ^M!> missing startcode @ 49298
> ^M!> found startcode @ 49300
> ^M!> missing startcode @ 53526
> 
> And those last two lines continue for the next 2.9M of the log file.
> 
> Has it even started transcoding the file to a higher resolution yet,
> or is it just demuxing the video and audio into different files?
> 
> Is this normal?
> 

Doesn't look right to me. In the log above it looks like it never got past 1%. 
You should be seeing the % value increasing something like this:

1% demuxing A/V PES file 1170_20050819193000_20050819200000.nuv
2% demuxing A/V PES file 1170_20050819193000_20050819200000.nuv
3% demuxing A/V PES file 1170_20050819193000_20050819200000.nuv
4% demuxing A/V PES file 1170_20050819193000_20050819200000.nuv

I just timed creating a DVD with a single 1.5Gb file on it. The Demuxing part just
took less than 2 mins to complete with 9 cutpoints on my system! The complete
DVD not including the burning took less than 8 mins total. Even a 733MHz cpu
shouldn't be taking 7 hours!

The mythburn scripts will never transcode anything by the way they assume the files 
you give it are already MPEG2 and have DVD compliant resolutions etc.


Paul