[mythtv] Jitterometer: Mixed progressive & interlaced frames?

Mark Buechler mark.buechler at gmail.com
Mon Nov 26 17:06:39 UTC 2007


Has anyone seen a case where jitterometer claims to see a constant mix of
interlaced and progressive frames? Many of my channels, which I would
consider interlaced, show up in Myth's logs as:

2007-11-26 12:01:03.976 NVP: interlaced frame seen after 59 progressive
frames
2007-11-26 12:01:03.976 Enabled deinterlacing
2007-11-26 12:01:04.326 NVP: progressive frame seen after 11 interlaced
frames
2007-11-26 12:01:04.393 Disabled deinterlacing
2007-11-26 12:01:04.559 NVP: interlaced frame seen after 7 progressive
frames
2007-11-26 12:01:04.559 Enabled deinterlacing
2007-11-26 12:01:04.726 NVP: progressive frame seen after 6 interlaced
frames
2007-11-26 12:01:04.793 Disabled deinterlacing
2007-11-26 12:01:04.976 NVP: interlaced frame seen after 7 progressive
frames
2007-11-26 12:01:04.976 Enabled deinterlacing
2007-11-26 12:01:05.326 NVP: progressive frame seen after 11 interlaced
frames
2007-11-26 12:01:05.393 Disabled deinterlacing
2007-11-26 12:01:05.493 NVP: interlaced frame seen after 5 progressive
frames
2007-11-26 12:01:05.493 Enabled deinterlacing
2007-11-26 12:01:05.793 NVP: progressive frame seen after 11 interlaced
frames
2007-11-26 12:01:05.859 Disabled deinterlacing
...

Is such a thing practical? I'm certain it's possible to have mix of both but
I can't imagine why anyone would want to do so. Is jitterometer correct
here?

- Mark.
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