Interlaced or not?

[donking]

Is there a way to tell if the source material is interlaced or not, and if so, which field order is first.

If encoded a homevideo of mine to SVCD and when I played the SVCD the image looks striped when things move fast.

When I watch this for crap for a while I'll get motion sickness or I'll wake up with frotch around my mouth, not remembering the past half hour.

Please advice,

Don

[Megahurts]

Hi donking

If your using TMPGEnc, switch the field order (settings-advanced) and if that solves your problem then it's interlaced.

Chas

[donking]

Ok, but is is possible to analyse the source material before to tell if it's interlaced or not?

For example, when I frameserve my video from premiere and open the avi file in TMPGenc it always analyses the content. I think that's a way to tell what field order to use.

Cheers,
Don

[q1aqza]

This free tool, called ReStream, can change the field order quite quickly without re-encoding. I use it all the time to switch my CCE encoded home DV movies as they are bottom field first and CCE defaults to Top Field first and I need to switch them. Truman provided me with the advice on this one.

It only works on a de-muxed video file so use TMPGenc to de-mux first and then remux with the newly created .m2v file that ReStream will create.

Here is the link: http://mitglied.lycos.de/fitcd/

[marsmayhem]

Bitrate Viewer will open the file and tell you the field order.

[vhelp]

.
.
two other ways I know of that will change field order w/out resorting
to ReStreaming:
* using AVIsynth** scripts', ...on a line, enter SwapFields
* or, if using vdub, under the Filters menu, select Add, then select the
field swap filter

Then, frameserve to CCE or TMPG

I find that for AVIsynth scripts .AVS to properly fieldOrder correctly, you
need to put in before any other commands, like telecide or whatever,
but, of course, it has to be AFTER the AVIsource or whatever you use to
read in an AVI file.

-vhelp

[q1aqza]

CCE would still over-ride the Swapfield command as whatever it is fed it defaults to TFF (V2.50 certainly does anyway).

Donking, if you are encoding DV home video then it is more than likely interlaced bottom field first. TMPGenc will encode bottom field first if you select it but CCE will default to Top first - hence the need for ReStream after encoding.

[marsmayhem]

Couldn't you also edit the MPEG2 program stream header once you've finalised it, and change the field order reported to the DVD player?

I know that Offeryn's AVestensione (freeware) will let you play around with fields in an MPEG2 PS.

[donking]

My source material is HI8 video, but probably the bottom field is the first field.

Thanks for all the suggestions, I'll try the bitrateviewer. It's not my intention to change the field order, I just need to know what the order is before I mpeg the movie.

Thanks,

Don