How can I tell the field order of an AVI file?

[wallywalters]

Is there any freeware out there that'll look at an AVI file and report whether it's top-field-first or bottom-field-first?

[RabidDog]

No there isnt ... you asked this b4, I think.

[fmctm1sw]

Is there any freeware out there that'll look at an AVI file and report whether it's top-field-first or bottom-field-first?

You can try this: http://www.lukesvideo.com/classifyhighres.html

But rabid may be right. My AVIs look the same regardless of the field swap filter...

[wallywalters]

Thanks, guys. Another related question comes to mind now. Is it possible that VirtualDub Capture defaults to capturing the same field first *every time*? Or is it random?

Or is this not determined by the software, but the capture card? If so, does the capture card do top-field-first or bottom-field-first every time? Or is *that* random?

[vhelp]

.
.
AFAIK, only those cards from Hauppage have "Field" bug. I mean, those
from the PVR lines. I have the oldest version PVR USB from like maybe
3 years ago, and only did 352 x 480. But, this guy had a "Field" order bug.
The other PVR's from that era suffers from this too, but they still do a great
job :P ..just don't run it through DVD2AVI, cause you'll get a bad IVTC w/ it if
you do - though theirs a work-around (I helped someone w/ this issue early
this year on it, and it worked out great) anyways..

Thats about all I know for now

From the Video Workstation of,
-vhelp 2081

[FOO]

One way is to use Avisynth and
separate the fields and feed that to Vdub
and step through the fields. It becomes obvious

[fmctm1sw]

One way is to use Avisynth and
separate the fields and feed that to Vdub
and step through the fields. It becomes obvious

Is that the same as using that "extended pop-up menu" thing in virtualdub? I think you can split the fields like that too can you not? The reason I mention is that I tried that too and didn't see any difference. Maybe I'll experiment again sometime...