[mythtv-commits] Ticket #3520: mtd assumes incorrect frame rate code
MythTV
mythtv at cvs.mythtv.org
Tue May 29 02:31:34 UTC 2007
#3520: mtd assumes incorrect frame rate code
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Reporter: anonymous | Owner: awithers
Type: defect | Status: new
Priority: minor | Milestone: 0.21
Component: mythdvd | Version: 0.20
Severity: medium |
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Nearly every (transcoded) rip I make of my son's DVDs have incorrect
audio/video sync. I have been dealing with this for two years, having my
wife adjust the offset with the remote control - onto which I have mapped
the sync adjust keys in lirc.
After banging my head against the wall for a weekend, it turns out that
the problem is that mtd gives -f0,1 for every encoding even though the
frame rate is actually frc 4.
Just removing the -f entirely allows transcode (e.g. tcprobe) to get this
right.
I see that dvdinput table defines frc 1 for '''all''' NTSC sources. (And
3 for all PAL). This seems to be a hasty generalization.
Many children's DVDs don't seem to fall into these categories. Probably
because they come from TV and not film.
Also, I have found many pan/scan cheap kids releases of theatrical (e.g.
the Babe/Babe2 double sided DVD) have the same problem.
'''Summary - mythdvd is making an assumption that is breaking transcode's
ability to autodetect and do the right thing...'''
request - at least give us the option "don't override detected frame rate"
a la the option of "use xvid instead of divx"
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Ticket URL: <http://svn.mythtv.org/trac/ticket/3520>
MythTV <http://svn.mythtv.org/trac>
MythTV
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