[FFmpeg-user] Extracting frames from 59.94 FPS video - only every other frame is different

[Carl Eugen Hoyos]

2017-12-04 11:02 GMT+01:00 Moritz Barsnick <barsnick at gmx.net>:

> I personally haven't had the greatest success with the
> "decimate" filter, but from its description, it can achieve
> what you require: Dropping "nearly identical" frames.

The releveant filter is called "mpdecimate":
https://ffmpeg.org/ffmpeg-filters.html#mpdecimate

The decimate filter is (part of) an inverse telecine filter
and has a different purpose (the important words in the
description being "at regular intervals" as opposed to
"whenever a frame is duplicated").

Carl Eugen