[mythtv-users] Time lapse when capturing from VCR

Nick Rout nick.rout at gmail.com
Mon Oct 19 03:44:38 UTC 2009


On Mon, Oct 19, 2009 at 4:36 PM,  <bhaskins at chartermi.net> wrote:
>
> ---- Kilian <kilian27 at googlemail.com> wrote:
>> 2009/10/17 David Brodbeck <gull at gull.us>
>>
>> > Kilian wrote:
>> >
>> >> When I watch the VCR tape via Myth's Live TV, every 5-6 seconds the
>> >> picture also hangs for about half a second.
>> >> This only happens when recording (resp. live watching) from the VCR, there
>> >> are no problems when recording/watching cable TV. I cannot understand this,
>> >> as both use the same input on the PVR-350. What is the difference between
>> >> the cable TV signal and the VCR signal?
>> >>
>> >> Any ideas? Thanks!
>> >>
>> >
>> > Is this a commercially-recorded videotape?  If it has Macrovision copy
>> > protection, that could cause this type of problem.  There are various
>> > devices you can hook up between your VCR and capture card that will fix
>> > this.  Try Googling for "video clarifier" or "video stabilizer."
>> >
>>
>> No, one tape is home-recorded, the other was copied from an old
>> super-8-movie some 10 or 20 years ago by a professional service.
>>
>> Another strange thing I found today: If I capture directly from /dev/video0
>> (dd if=/dev/video0 of=test.mpg) and watch this with mplayer, there is no
>> time lapse.
>
> Not at all strange, there is much less system overhead that way.
>
>>  Thus it seems to be some Myth problem, isn't it?

I think at the end of the command line is just as easy. If you want it
in recordings or mythvideo then its easy to add into the database.


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