how to trim in FFMPEG?

[marcorocchini]

Hi cats,

please consider this commandline:

ffmpeg.exe -y -i AUDIOinput.wav -i VIDEOinput.avi -c:v libx264 -profile:v high -level:v 4.1 -pix_fmt yuv420p -g 33 -bf 2 -vf yadif,colormatrix=bt709:bt601 -crf 18 -c:a libmp3lame -b:a 320k -aspect 16:9 out.mp4

I need to trim video so that out.mp4 is the range

from 33 seconds
to 38 minutes and 04 seconds

of the original video and audio input that have duration of 1hour and 15 minutes

How can I do? thanks

[DB83]

You can not trim a cat since it does not have hair.
You can trim a lion but I do not suggest you try it.

You know sometimes it helps that you find a solution for yourself, or atleast attempt it, rather than let others do the work for you. It took me 10 secs (not being a ffmeg user) to determine how to do this.

[racer-x]

-ss 00:00:33 -t 00:37:31

[marcorocchini]

-ss 00:00:33 -t 00:37:31

umh interesting, but how have you achieved 00:37:31 from 38 minutes and 04 seconds?

and can I set frames in place of times?

[poisondeathray]

-ss 00:00:33 -t 00:37:31

umh interesting, but how have you achieved 00:37:31 from 38 minutes and 04 seconds?

MATH for cats!

-t is start time
-d is duration

If you start at 00:00:33 (ie. 33 seconds) and you add 37 min, 31 sec, you get 38 min 04 sec

and can I set frames in place of times?

-vf trim with start_frame , end_frame

Note end_frame is the 1st frame that is dropped (excludes, not inclusive like avisyth trim())

https://ffmpeg.org/ffmpeg-filters.html#trim

[aazerty]

Hi ,

===
MATH for cats!

-t is start time
-d is duration
===

You are wrong !!!

-ss for start time
-t for the time of the video

Cheers .

[poisondeathray]

^ thanks for correction , it's too early here

[pandy]

alternatively to -ss and -t

https://www.ffmpeg.org/ffmpeg-all.html#trim
https://www.ffmpeg.org/ffmpeg-all.html#atrim