LinHES Forums :: View topic - R5B7 burn recorded TV to DVD

I'm using the awesome KnoppMyth R5B7. In case ver info is important,
I did a CVS update in /myth/mythburn on 4/13/2006.

/myth/mythburn/mythtvburn.sh Line 856:
growisofs -use-the-force-luke -Z /dev/dvd -dvd-video -V "MythTV
BurnDVD" ${dvddir}
is returning <log_snippet>:-( unable to open64("/dev/dvd",O_RDONLY):
Permission denied</log_snippet> when called via the web UI. (which is
wonderful BTW.)

I've checked:
root@mythtv:/myth/mythburn# ll /dev/dvd
lrwxrwxrwx 1 root cdrom 8 Apr 2 20:14 /dev/dvd -> /dev/hdb
root@mythtv:/myth/mythburn# ll /dev/hdb
brw-rw---- 1 root cdrom 3, 64 May 7 2004 /dev/hdb
root@mythtv:/myth/mythburn# grep "^User" /etc/apache/httpd.conf
User www-data
root@mythtv:/myth/mythburn# grep "^cdrom" /etc/group
cdrom:*:24:mythtv,bruno
root@mythtv:/myth/mythburn# grep "www" /etc/group
www-data:*:33:

So, to solve my permission denied issue, should I do:
a) add the user www-data to the group cdrom
b) chmod o+rw /dev/hdb
c) something else (which you will have to explain)

I've leaning toward option "a".

Author:	RichardBronosky [ Thu Apr 13, 2006 6:29 am ]
Post subject:	R5B7 burn recorded TV to DVD - definitive answer?
Is there one? I find way too many posts on this topic (not so much for R5B7 though). I cannot tell what is valid. I would like know what program to use. Nuv2Disk, Mythburn from the new menu, or dvd burn from the web page. Nuv2disk never seems to want to work for TV shows off my PVR-500, and I don't burn VOB files from DVDs. Sot this all seems a little worthless right now. Can we please come up with one definitive answer for R5B7?

Author:	Greg Frost [ Thu Apr 13, 2006 5:09 pm ]
Post subject:
This may shed some light: R5B7 has Mythtv 0.19 in. Recording in PS format is no longer selectable in thyis version of Mythtv. All MPEG-2 recordings are recorded in TS format. The multiplexing that is required before burning to DVD done by Nuv2disc uses tools that do not support TS format recordings, so nuv2disc is out for that purpose. Both the new menu (the mythburn-ui) and the Burn-DVD option in mythweb use the SAME scripts (the mythburn scripts) to actually do the work, so they should be capable of the same things. Both should work. For cutting commercials, preroll and overrecord, you can either use the built in lossless transcoding (some people have reported occasional audio drop outs at the cut points using this method), or select the use cutlist option from mythburn which will use project-x to do the cutting.

Author:	myth19kirt [ Tue Apr 18, 2006 2:49 pm ]
Post subject:
Sticking point. Must use resolution of 720X480 and non-PS formated stream. I used 720x480 DVD-special2 with cut-list and that worked great! I do think trascoding before will help you to size up your DVD. Otherwise you will think you can't fit anymore onto a DVD, but after the cut-list is done there could be enough for another Dr. Dimento episode. I don't have a front-end right now, so I burn some content onto RW to watch upstairs; then erase.

Author:	tjc [ Tue Apr 18, 2006 8:03 pm ]
Post subject:
Actually last time I was worried about this I found that the default 480x480 worked just fine with my DVD player and several others...

Author:	RichardBronosky [ Tue Apr 18, 2006 9:10 pm ]
Post subject:	After further research...
It seems that the MythUI isn't aware of the mythburn scripts out of the R5B7 box (iso). So using the MythBurn portion of MythWeb worked for everything (Building the DVD and creating the iso) up to the actual burn. It then got a Permission denied error trying to access /dev/dvd. I dicussed this on the mailing list, and will summarize here Quote: I'm using the awesome KnoppMyth R5B7. In case ver info is important, I did a CVS update in /myth/mythburn on 4/13/2006. /myth/mythburn/mythtvburn.sh Line 856: growisofs -use-the-force-luke -Z /dev/dvd -dvd-video -V "MythTV BurnDVD" ${dvddir} is returning <log_snippet>:-( unable to open64("/dev/dvd",O_RDONLY): Permission denied</log_snippet> when called via the web UI. (which is wonderful BTW.) I've checked: root@mythtv:/myth/mythburn# ll /dev/dvd lrwxrwxrwx 1 root cdrom 8 Apr 2 20:14 /dev/dvd -> /dev/hdb root@mythtv:/myth/mythburn# ll /dev/hdb brw-rw---- 1 root cdrom 3, 64 May 7 2004 /dev/hdb root@mythtv:/myth/mythburn# grep "^User" /etc/apache/httpd.conf User www-data root@mythtv:/myth/mythburn# grep "^cdrom" /etc/group cdrom::24:mythtv,bruno root@mythtv:/myth/mythburn# grep "www" /etc/group www-data::33: So, to solve my permission denied issue, should I do: a) add the user www-data to the group cdrom b) chmod o+rw /dev/hdb c) something else (which you will have to explain) I've leaning toward option "a". To make this change you can use this script Code: user='www-data'; group='cdrom'; usermod -g `id -g $user` -G `echo \`id -G $user\` \| sed 's/\s\+/,/g'`,`grep '^cdrom' /etc/group\|awk -F: '{ print $3 }'` $user You can adjust the user & group vars to suit your setup, but this worked for my default upgraded from R5A32 system. Tonight I'm going to find out how to tell MythUI to use the scripts in /myth/mythburn

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