Re: [FFmpeg-user] Starting to copy takes long
On Wednesday 29 Mar 2017 09:34 CEST, Carl Eugen Hoyos wrote: > 2017-03-29 4:17 GMT+02:00 Cecil Westerhof : > >> You are right. But it was only a temporary hack, because >> what I really wanted was: >> ffmpeg -ss 16:28 -t 5 -i input.mov output%03d.jpg > > Just like to note that the input option "-t" is supposed to > work but sometimes has side-effects (or fails), the safe > way to do it is: > $ ffmpeg -ss x -i input -t y out > unless you need the input option. In this case it worked, but when I need it again, I will put it after the input. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Starting to copy takes long
2017-03-29 4:17 GMT+02:00 Cecil Westerhof : > You are right. But it was only a temporary hack, because > what I really wanted was: > ffmpeg -ss 16:28 -t 5 -i input.mov output%03d.jpg Just like to note that the input option "-t" is supposed to work but sometimes has side-effects (or fails), the safe way to do it is: $ ffmpeg -ss x -i input -t y out unless you need the input option. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Starting to copy takes long
On Wednesday 29 Mar 2017 02:32 CEST, James Darnley wrote: > On 2017-03-29 02:04, Cley Faye wrote: >> 2017-03-29 1:54 GMT+02:00 Cecil Westerhof : >> >>> I want to copy a little bit of a video. I do this with: >>> ffmpeg -i input.mov -ss 16:28 -t 5 output.mov >>> >>> But it takes about 2:20 before the copying starts. Is this normal? >>> >> >> Try moving the -ss part before your input. -ss before an input use >> forward (if possible fast forward) on your source, while before an >> output it means processing everything before, then start using the >> output after the given time. > > Furthermore ffmpeg is not copying anything there. You did not tell > ffmpeg to copy. It is encoding with (probably rubbish) defaults. You are right. But it was only a temporary hack, because what I really wanted was: ffmpeg -ss 16:28 -t 5 -i input.mov output%03d.jpg But because I had the -ss and -t on the wrong place it took very long. So I cut the piece I wanted to get the images from. (But in the wrong way.) Next time I should be more carefull. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Starting to copy takes long
On Wednesday 29 Mar 2017 02:04 CEST, Cley Faye wrote: > 2017-03-29 1:54 GMT+02:00 Cecil Westerhof : > >> I want to copy a little bit of a video. I do this with: >> ffmpeg -i input.mov -ss 16:28 -t 5 output.mov >> >> But it takes about 2:20 before the copying starts. Is this normal? >> > > Try moving the -ss part before your input. -ss before an input use > forward (if possible fast forward) on your source, while before an > output it means processing everything before, then start using the > output after the given time. That was the problem. Thanks. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Starting to copy takes long
On 2017-03-29 02:04, Cley Faye wrote: > 2017-03-29 1:54 GMT+02:00 Cecil Westerhof : > >> I want to copy a little bit of a video. I do this with: >> ffmpeg -i input.mov -ss 16:28 -t 5 output.mov >> >> But it takes about 2:20 before the copying starts. Is this normal? >> > > Try moving the -ss part before your input. -ss before an input use forward > (if possible fast forward) on your source, while before an output it means > processing everything before, then start using the output after the given > time. Furthermore ffmpeg is not copying anything there. You did not tell ffmpeg to copy. It is encoding with (probably rubbish) defaults. signature.asc Description: OpenPGP digital signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Starting to copy takes long
2017-03-29 1:54 GMT+02:00 Cecil Westerhof : > I want to copy a little bit of a video. I do this with: > ffmpeg -i input.mov -ss 16:28 -t 5 output.mov > > But it takes about 2:20 before the copying starts. Is this normal? > Try moving the -ss part before your input. -ss before an input use forward (if possible fast forward) on your source, while before an output it means processing everything before, then start using the output after the given time. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] Starting to copy takes long
I want to copy a little bit of a video. I do this with: ffmpeg -i input.mov -ss 16:28 -t 5 output.mov But it takes about 2:20 before the copying starts. Is this normal? -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
