How do you recognize your source video field?

[Sean_ve99]

Hi
How can we find the video source field order (upper field or Lower field)?
Thanks for any comment.

[edDV]

GSpot should identfy most cases. Some sources are progressive.

[Sean_ve99]

Thanks for the reply.

[Sean_ve99]

I downloaded Gspot and run it but I didn’t see any section that shows interlacing, it just have a section as Field that shows number of field, how can we find interlacing order (Lower Field/Upper Field) in video files?

[edDV]

You haven't told us what you are capturing from but this is a typical NTSC DV GSpot analysis that shows BFF (bottom field first) in green at right. PAL DV would also show BFF while most capture cards will produce TFF (top field first).

[Sean_ve99]

Thanks for your help, but you said: PAL DV would also show BFF while most capture cards will produce TFF (top field first).
Does it mean that Gspot sometimes gives wrong information?

[edDV]

No. Capture cards vary. Most are TFF. DV format is always BFF (PAL or NTSC).

Here is a typical TFF TV card MPeg2 output.

[Sean_ve99]

Thanks a lot.

[t0nee1]

Open video file with DGIndex and press f5 on KB, it will show all video info including the field order ..