Hauppauge Combing Artifacts

[Torrential]

Hello everyone,

I have a Hauppauge WinTV-PVR-150. It's quite good, however, when I capture I seem to be getting combing artifacts that are not interlace lines. I've tried using Inverse Telecine to get rid of them, as well as deinterlace. I'm capturing in highest bitrate MPEG-2, using the WinTV2000 Application. My goal is to convert my MPEG captures to Xvid/Divx, however these lines are very disturbing. A screenshot is below. Thanks for any help =)



If you see the lines on the shirt and under the face, those are the ones I am talking about.

I just wanted to point out that I don't get these lines when capturing with my ATI capture card, it just seems to come with Hauppauge. I would use my ATI card but my Hauppauge card seems to output better quality.[/img]

[junkmalle]

The image you posted was 674x358. How did you resize the frame? It looks like normal interlaced video that has been improperly resized.

In my experience modern animated films don't inverse telecined well because they don't use normal 3:2 pulldown.

[Torrential]

I captured in 720x480 and just cropped the black bars off (it was widescreen) . There was no resizing. The lines are visible in the original capture file also, but as I said deinterlacing doesn't get rid of them.

You said modern anime films don't inverse telecine that well, then how come deinterlacing doesn't fix them either?

[junkmalle]

I captured in 720x480 and just cropped the black bars off (it was widescreen) . There was no resizing. The lines are visible in the original capture file also, but as I said deinterlacing doesn't get rid of them.

I've seen some stuff broadcast that way. Probably a bad PAL to NTSC conversion.

[Torrential]

I captured in 720x480 and just cropped the black bars off (it was widescreen) . There was no resizing. The lines are visible in the original capture file also, but as I said deinterlacing doesn't get rid of them.

I've seen some stuff broadcast that way. Probably a bad PAL to NTSC conversion.

I would think this would have something to do with the Hauppauge card because it doesn't appear when I use my ATI Card.

[junkmalle]

You said modern anime films don't inverse telecine that well, then how come deinterlacing doesn't fix them either?

Deinterlacing either removes one field or blurs the two of them together. Since the field structure has been screwed up by the broadcaster neither of those techniques will work correctly anymore.

Can you capture other material without that problem? Just to rule out a bad card...

[Torrential]

I just tried a capture on another show and it has those lines too. I guess it's a bad card then. However those lines in the image, they don't seem to look like regular interlace lines.

[junkmalle]

I just tried a capture on another show and it has those lines too. I guess it's a bad card then. However those lines in the image, they don't seem to look like regular interlace lines.

Your are correct, those are not normal interlace comb lines. I have a PVR-250 and it generally doesn't have problems like that. But I have seen it mess up on rare occasions. In one case powering the computer off and back on fixed it. At other times it has been the broadcast -- nothing I could do about that of course.

[lordsmurf]

IT IS NOT A BAD CARD!

These are normal interlace lines.
www.100fps.com actually discusses this "error" in detail.
What you see is chroma crossover into other fields.
This is likely how the source was, not something that can be changed.
When you play on tv, this will not be noticed.

[vhelp]

My suggestion would be to record a show that you *know* will produce
this same issue, to a vcr. Then, you can try both an Analog capture
card and your PVR card.

If this issue shows up on both, then problem solved. Its what I've ben
saying for a long time, that most of such issues is not equipment, but
source from medium.. ie, cable/satellite provider; or something recorded
to a VCR; and later, captured.

But first let me ask.. how are you bringing in these pics from your MPEGs ??

Very important. Because I fould out (a while ago) that VirtualDubMOD has
some issues (or bugs) when you bring in an Hardware MPEG encoded source
into it, and it YUV -> RGB corruptly.. and you notice it more so, in the
RED areas or, you see streaking RED lines as in your pic.

{
.. Note, in my case, I believe that this was (is) on account of the
.. YV12 sub-sampling conversion w/ virtualDubMOD process.
}

In my past experience w/ Analog capture cards and capturing in some form
of YUV sampling format.. ie, ATI's YV12, this would show up in mine.

So, I'm wondering also, if your card is bad or not. That is why I suggested
to record to your VCR, and later, capture it with your Analog capture card
and Hardware MPEG card. If both cards show the same to any degree, then it
is just the source from the provider airing it. But, if *one* of the capture
devices show *absolutly* no hint of these lines, then it is safe to assume
that the provider is airing clean source, and now you can go on believing that
one of your capture devices are showing signs of defecting.

So, to recap:
** Record known shows to VCR
** Later, capture with both your Ananlog and Hardware MPEG devices
** Then, compare both sources for these issues
** Then, recap from what I mention above for knowledge (what to do next)

-vhelp 3564

[SHS]

Torrential what drivers are you using?.
I scaen that type stuff happing in real time and capture mostly just from cable provider system.
Use Real MPEG Editor like MPEG2VCR to take raw capture becuase some time what your really seeing is not what really seeing but what it could be os a blending of 3 field structure before & after frames which make like kind of screwed up like that.

[sweetfreek]

It does look like it may have been resized "too early". But, without any doubt, those are interlace lines.

Firstly, I use MSI's TV@nywhere, but this advice should still work unless I'm much mistaken: USE A DIFFERENT CODEC!! I have had nothing but bad experiences trying to capture directly to mpeg2. I run with VirtualVCR as my captureing app (640x480 RGB) using DivX 5.1.1 (1pass 4000kbps scene-change=%50 key-frames=300)

Now here's the important part: there is an option in the DivX package to "encode as progressive" or "deinterlace frames". I use the first for recoding a video during filtering (trying to prefilter just consumes too much cpu time), and the second for my initial capture.

DivX gives me very good results and I rarely have any interlacing artifacts afterwards.

[lordsmurf]

Deinterlacing is horrible advice.
Same goes for capturing in DIVX or MPEG-4.

Not to mention this is an MPEG hardware card.