[FFmpeg-user] Question about macroblocks in soft telecined video

Carl Eugen Hoyos ceffmpeg at gmail.com
Sun Sep 6 09:26:31 EEST 2020

Am So., 6. Sept. 2020 um 06:20 Uhr schrieb Mark Filipak
<markfilipak.windows+ffmpeg at gmail.com>:

> I would guess that, for an undecoded video that's soft telecined (i.e. @24/1.001 FPS),
> the interlace in the macroblocks is field-based (i.e. the same as if @30/1.001 FPS),
> not frame-based (i.e. the same as if @24 FPS).

This does not make sense.

> Specifically, for YCbCr420, blocks 5 (Cb) & 6 (Cr) are deinterlaced into top & bottom
> fields (in the top-half & bottom-half of the blocks) rather than being progressive.

This seems more difficult to understand but I don't think it makes sense either.

Carl Eugen

More information about the ffmpeg-user mailing list