Hi, I am using ffmpeg to crop video based on this command: ffmpeg -i input.mp4 -ss 23:43 -to 40:00 -c:v copy -c:a copy output.mp4
but this is a little bit slow, so I try to switch the -ss parameter before -i, which looks like: ffmpeg -ss 23:43 -i input.mp4 -to 40:00 -c:v copy -c:a copy output.mp4 when I execute this command, the result is not what I expected. The duration of output video is 40 minutes, not 17 minutes. I look up the ffmpeg document and ask the ChatGPT, and figure out that the timestamp of -to parameter is a relative stop time of -ss timestamp, just like the -t parameter. And the ChatGPT says this is intentional. [Q1] Is this really intentional? If it is, can anyone share the thought of this design? [Q2] Is there a way to make the second command works like the first command? All the best, lp _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
