Remove thin line/artifact from bottom of video

[jmkeuning]

I have a Tuner card that I use to record videos. When I record from the TV Cable coming into the PC I have no problem. When I record a video tape I have a strange artifact at the bottom of the picture. I also just got some AVIs from someone that have the artifact on the top.

Is there a quick way to remove this artifact and just replace it with black space?

I record in mpegs.

[FulciLives]

What you are seeing is normal. It is there on videotapes and even some broadcast TV.

You don't see it on a TV but you see it on a computer monitor.

Why?

Just about all televisions have OVERSCAN ... this means that the image is shown in such a way that the extreme edges (top, bottom, right and left) are "masked" so that you do not see such video junk.

A computer monitor does not have OVERSCAN so you do see the extreme edges and thus any video junk that may be there.

If you capture direct to MPEG format then no there is no way to get rid of it or mask it unless you re-encode after the fact.

But when you play this back on a TV you will not see any of it so to an extent it is a bit of a moot point since it is there anyways and not visible on a normal TV.

- John "FulciLives" Coleman

[manono]

But to get rid of it and replace it with black (where xx=the number of pixels to be removed and the black to be added back), using AviSynth:

Crop(0,0,0,-xx)
AddBorders(0,0,0,xx)

I guess there's a VDub equivalent. It'll have to be reencoded, of course.

Do you really leave in the garbage pixels, FulciLives? Or when capping, you cap in the final format and they don't have to be reencoded? I'm just asking, not criticizing, as I don't cap.

[FulciLives]

But to get rid of it and replace it with black (where xx=the number of pixels to be removed and the black to be added back), using AviSynth:

Crop(0,0,0,-xx)
AddBorders(0,0,0,xx)

I guess there's a VDub equivalent. It'll have to be reencoded, of course.

Do you really leave in the garbage pixels, FulciLives? Or when capping, you cap in the final format and they don't have to be reencoded? I'm just asking, not criticizing, as I don't cap.

Well the thread creator said that he/she captures MPEG so you really don't have a choice then, do you?

In the old days I used a BT chipset PCI capture card and I used PICVideo MJPEG AVI so yes I would use AviSynth to remove the garbage before re-encoding to MPEG.

These days I'm a bit lazy and I never could get the old capture card to work on the new computer I have now so now I just use a stand alone DVD recorder. I do have some sources that could benefit from a filter/sfotware MPEG encoding but I've been putting that stuff off until I get a new capture card ... probably will just get a Hauppauge card and capture 15,000kbps MPEG-2 and then use that as a "source" capture ala AVI to re-encode so I can filter etc.

- John "FulciLives" Coleman

[dvd3500]

1. Buy a bunch Sticky notes
2. User a magic marker to make them black
3. Paste them to the screen to cover up the line
Laugh, dammit

[FulciLives]

1. Buy a bunch Sticky notes
2. User a magic marker to make them black
3. Paste them to the screen to cover up the line
Laugh, dammit

I had a 19" TV once in college that had so little overscan on the bottom that you could see some of the video junk when playing a VHS tape. My solution was black electrical tape on the screen going across the bottom.

Solved that issue LOL

- John "FulciLives" Coleman

[olyteddy]

I used to use Duct Tape to cover the annoying 'Station Bug' in the lower right corner of almost all television. I have since grown to just ignore it.

[SingSing]

You guys should goto the back of the TV, open the back cover and adjust the vertical height with a mirror. Of course you have to do this while the high voltage is on ( that's the fun part).

You can do all this with the screen adjustment buttons with OSD(on screen display) on a PC monitor.

[jmkeuning]

I put the electrical tape on my desktop monitor and it fixed the problem! The problem is that it comes back when I watch the file on my laptop.

[FulciLives]

I put the electrical tape on my desktop monitor and it fixed the problem! The problem is that it comes back when I watch the file on my laptop.

LOL

You might just fit in here afterall :P

Anyways as has been said before you can mask it with pure black but if you capture to MPEG then I assume you are not going to re-encode the file and to replace it with black or mask it with black etc. you need to re-encode but then you loose quality when you do that so ...

What capture card do you have by the way?

- John "FulciLives" Coleman

[jmkeuning]

I have a Hauppauge WINTV-PVR-150 PCI Interface Tuner Card

And I love it. Some people have complained that it can be a pain to set up. When I first built my PC all went breezy. After a reformat, however, it took some troubleshooting (stumbling around in the dark) to get it to work. But it works GREAT.

I have not used any other capture cards but here is why I like it.

1. TitanTV - internet-based TV guide scheduling thing where you can search for programs, hit a button, and automatically schedule the recording. Work purrrrfect.

2. Audio. I had some other brand of card (not junk, a pretty good one) that had a separate audio line that had to be plugged into the audio card via a little patch cable. Sketchy. I returned it right away.

Anyway, I was looking through some old TV caps and noticed the garbage pixels on some of them and not on others. I don't know why this happens. Fact is, I don't really care. I wanted to make sure it was not a hardware problem and you have assured me that it is not!

[FulciLives]

If you wanted that card can capture up to 15,000kbps for MPEG-2 so if you wanted a "master" capture you would do a CBR of 15,000kbps MPEG-2 with 384kbps 48k Stereo MP2 audio.

Then that would be a high enough quality source that you could re-encode it with software (like CCE or TMPGEnc Plus) and while doing the re-encode you can mask the bottom with black etc.

I tried that card and I had audio issues and another issue with bright white or "hot spots" that made me return it.

In fact most people avoid the WinTV PVR 150 and get the WinTV PVR 250 or USB 2.0 model as those don't have the audio and hot spot or bright white issue.

I understand the newer drivers have more or less solved the audio issue (audio clipping from being recorded too loud) but that some still have the brightness issue.

- John "FulciLives" Coleman

[jmkeuning]

Wow, how HUGE is that file going to be?

I will trying a recording with those settings.

I have not had any hot spots or video issues! I gues I'm lucky. I bought the thing before I knew anything about video so I figured I would try it out - I've been happy.

Also, isn't it that case that some editors (I use Womble MPEG-VCR) are frame accurate and will not degrade the quality?

The fact is, I have not noticed quality issues, but maybe I'm just not that picky when recording TV!