[FFmpeg-user] Why are half the frames "duplicate" ?

[Reuben Martin]

On Wednesday, September 26, 2018 9:27:26 PM CDT sean darcy wrote:
> I'm transcoding mpeg2 -> x264.
> 
> Stream #0:0[0x64]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
> yuv420p(tv, progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions,
> 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
> 

I doubt that is progressive. Or if it is it’s probably progressive with a 
telecine flag set so that it’s played interlaced. When you see both 29.97 and 
59.94, it’s probably interlaced. (frame-rate and field-rate)

-Reuben