[FFmpeg-user] Selecting/dropping frames without re-encoding

[Carl Eugen Hoyos]

2016-10-05 23:08 GMT+02:00 Mikhail V <mikhailwas at gmail.com>:
> On 5 October 2016 at 19:55, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>> 2016-10-05 15:45 GMT+02:00 Mikhail V <mikhailwas at gmail.com>:
>>
>>> Is it possible that ffmpeg cannot do this without re-encoding?
>>
>> You can export single frames and delete half of them using a
>> shell script.

> Sure I can :) Also I can just directly recode it in 25 fps in any codec.
> So I suppose the answer is - I can't do it without re-encode.

If you want to drop every second frame without re-encoding at
all, you can export all frames as single frames and use a shell
script to drop half of them.

Carl Eugen