[mythtv-users] USA OTA - interlaced?

Devin Heitmueller dheitmueller at kernellabs.com
Wed May 9 18:59:43 UTC 2012


On Wed, May 9, 2012 at 2:48 PM, Matt Garman <matthew.garman at gmail.com> wrote:
> Is there a way to tell if a given recording is interlaced or not?
> FWIW, I'm in Chicago, IL, USA.  We record the national networks,
> primarily FOX ("WFLD 32").
>
> I ask for the following reason: a while ago, I started experimenting
> with using Intel (Sandy Bridge) graphics, so I could lose my
> power-hungry Nvidia card.  During initial testing, I disabled
> de-interlacing in my playback profile.  And to this day, I still don't
> have any interlacing enabled, because everything plays back
> beautifully.
>
> So either I am recording progressive content, or my TV (Panasonic
> TC-P65V10) is doing the deinterlacing for me.

Probably the fastest way to check is run ffmpeg against the recording
and look at the height/width.  A height of 720 is progressive and 1080
is interlaced (it is possible to have 1080 progressive, but you'll
never see it in an OTA broadcast).

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com


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