Can the ADV7181C support 240p in / 480i out?
To correctly process 240p in / 480i out, you need to use a Frame TBC.
The problem with 240p, is firstly that sources treat the signal differently. Some sources will add lines to the signal to get an even total number of lines, whereas some sources will subtract a line to make it even.
There is no way of knowing this. A Frame TBC will correct for this and process it correctly.
Unfortunately the ADV7181C does not have a Frame TBC, so for 240p in / 480i out, it will output either a total of 524 lines or 526 lines, based on what the 240p source is providing.
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