Horizontal Black/White Blocks/Lines on Top of Video

[xxbobbyfinxx]

Okay, so i love my capture card, I can record widescreen and all the good stuff, only problem is these annoying lines at the top of my videos that I've lived with forever. I have also seen them on many other capture card videos as well.



You can see the little blocks or lines of color at the top of the screen in PVR2. I have Winfast PVR2 and I believe the Winfast Px TV 1200.

[jagabo]

Closed captions.

[xxbobbyfinxx]

Closed captions.

Do you mean I have them turned on?
If so then how can I turn them off?

Edit: Closed Captions appears to be off when I right click on the screen I can check them and it's not checked.

[jagabo]

That is where the closed caption information is broadcast -- at the very top of the frame, as part of the picture. A closed caption device reads those lines, decodes the data, and displays it as text. You don't normally see the data on TV because TVs overscan the picture (the outer few percent of the picture is hidden by the TV's bezel). Ie, the data is part of the picture, there's nothing you can do about it.

[Khaver]

... Ie, the data is part of the picture, there's nothing you can do about it.

Crop.

[xxbobbyfinxx]

... Ie, the data is part of the picture, there's nothing you can do about it.

Crop.

So how can I crop an entire video like that?
I use Adobe Premier Elements 8.0
Oh, an how come some other capture cards don't have those lines?

[Khaver]

I don't have APE8 but there should be a way to zoom into the frame just enough to remove the CC data.

[lordsmurf]

Never crop for Bluray or DVD -- mask.
Only crop for Youtube, etc.

[edDV]

The Vertical Interval (VI) is supposed to be off screen on a properly adjusted 4:3 NTSC TV however with digital transmission of analog programming, local ATSC stations often forget to blank the data when broadcasting letterbox.

Various data go into the last lines of the vertical interval including:
Line 11-18 TVGOS* (Local Electronic Program Guide usually broadcast on the PBS station)
Line 12-14 SMPTE Timecode (usually used internally and blanked at transmitter).
Line 12-14 Datacasting (optional)
Line 17-18 Enginerring test signals (optional).
Line 19 Vertical Interval Reference (optional chroma reference)
Line 20 Network data for communication with affiliates
Line 21 Closed captions, XDS (extended data casting) and VChip data
Line 22 Used by DirectTV or optional for Tivo Data (broadcast on Ion and Discovery Networks).

Line 23 begins active NTSC video.

Many tuner capture cards start capture at line 21 so they can decode closed caption and V-Chip data.

A visual display of an NTSC frame gives a useful explanation of what you see.


from http://zone.ni.com/devzone/cda/tut/p/id/4750


* TVGOS (TV Guide) is supported by many newer TV sets or DVD recorders. The TV gets the data from the local PBS station which receives portional advertising compensation in return.
http://www.rovicorp.com/products/ce_manufacturers/guide_ce/tv_guide_on_screen.htm


[Attachment 3743 - Click to enlarge]

PS: Now that analog NTSC is obsolete in the USA, vertical interval data now exists only on cable analog stations. Canada and other NTSC countries still broadcast analog NTSC. Cable carries line 21 for closed captions, XDS and VChip but supply their own version of the program guide. Cable also carries proprietary vertical interval data to trigger local advertising inserts down to the neighborhood level. ATSC digital broadcasting includes all this data plus many new extended services.