[FFmpeg-user] ntsc-dvd doesn't default to interlaced.
andycivil at gmail.com
Sun Jul 28 08:05:39 CEST 2013
On 2013-07-28 1:28 AM, Mike Brown wrote:
> Interesting. I never knew that the DVD MPEG-2 video was supposed to be
> BFF. I alawys thought it was TFF. But... since pretty much all movies are
> placed on DVD as 23.976p, with pulldown flags, the DVD player will convert
> the MPEG-2 to analog NTSC 2:3 output.
I inferred it from the Wikipedia page on NTSC
"By convention an NTSC video frame is considered to start with an even field
followed by an odd field."
> As far as being normal as possible... the person who plays the DVD could
> care less which field is first, as long as it plays correctly on the analog
> TV. If played on a computer, or any other display, it isn't going to make
> a difference.
I guess you mean "couldn't care less"?
You may be right, but this video is actually going to be played on Grandma's LCD
television in Britain (A PAL country). I have observed that NTSC DVDs I make
work correctly in her DVD player, but I don't know exactly how. Therefore, I
don't dare mess with the NTSC standard, in case the equipment assumes anything.
I could make a DVD which is essentially NTSC but TFF and it could work on my
computer, but her DVD player might ignore the TFF flag and assume it's BFF with
More information about the ffmpeg-user