ffmpeg fails to copy, creates 2 second video

0

I want to copy a portion of a 15 minutes MP4 video, from 11:23 for 46 seconds.

I ran this command:

ffmpeg -ss 11:23:00 -i input.mp4 -vcodec copy -acodec copy -t 46 output.mp4

This generates a 2 second video, that has no audio and shows just 1 frame.

Any idea what could be the problem? Or how could I debug this issue further?

user3122885

Posted 2019-10-26T15:30:30.790

Reputation: 175

Answers

1

This worked if I removed the milliseconds from the start time:

ffmpeg -ss 11:23 -i input.mp4 -vcodec copy -acodec copy -t 46 output.mp4

I have no logical explanation for why this change made it work though.

user3122885

Posted 2019-10-26T15:30:30.790

Reputation: 175

At a guess, perhaps ffmpeg was thinking you meant 11 hours and 23 minutes. Milliseconds would likely be 11:23.000 (or perhaps 00:11:23.000). – Anaksunaman – 2019-11-15T16:08:33.123

Asked: 2019-10-26T15:30:30.790

Viewed: 43 times

Active: 2019-10-27T10:19:56.240