ffmpeg setpts filter not applied to output











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Learning to speed up and slow down video using the ffmpeg setpts filter, but I am struggling to get a simple expression to work.



ffmpeg -i .F5-ff.mp4 -filter:v "setpts=0.25*PTS" ff-test3.mp4



I get the output file, but it is not any faster than the original.



I'm sorry if this has already been addressed. Most related post I've found were trouble shooting more complex operations past this step. Im working in a powershell terminal fyi.










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    up vote
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    down vote

    favorite












    Learning to speed up and slow down video using the ffmpeg setpts filter, but I am struggling to get a simple expression to work.



    ffmpeg -i .F5-ff.mp4 -filter:v "setpts=0.25*PTS" ff-test3.mp4



    I get the output file, but it is not any faster than the original.



    I'm sorry if this has already been addressed. Most related post I've found were trouble shooting more complex operations past this step. Im working in a powershell terminal fyi.










    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Learning to speed up and slow down video using the ffmpeg setpts filter, but I am struggling to get a simple expression to work.



      ffmpeg -i .F5-ff.mp4 -filter:v "setpts=0.25*PTS" ff-test3.mp4



      I get the output file, but it is not any faster than the original.



      I'm sorry if this has already been addressed. Most related post I've found were trouble shooting more complex operations past this step. Im working in a powershell terminal fyi.










      share|improve this question













      Learning to speed up and slow down video using the ffmpeg setpts filter, but I am struggling to get a simple expression to work.



      ffmpeg -i .F5-ff.mp4 -filter:v "setpts=0.25*PTS" ff-test3.mp4



      I get the output file, but it is not any faster than the original.



      I'm sorry if this has already been addressed. Most related post I've found were trouble shooting more complex operations past this step. Im working in a powershell terminal fyi.







      ffmpeg






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      asked Nov 22 at 16:32









      joe5

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          Just realized what was happening...I was looking at the total length of the video, but closer look showed that video portion was actually faster, but total length of file remained unchanged because audio track had not been shortened.






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            up vote
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            Just realized what was happening...I was looking at the total length of the video, but closer look showed that video portion was actually faster, but total length of file remained unchanged because audio track had not been shortened.






            share|improve this answer

























              up vote
              1
              down vote













              Just realized what was happening...I was looking at the total length of the video, but closer look showed that video portion was actually faster, but total length of file remained unchanged because audio track had not been shortened.






              share|improve this answer























                up vote
                1
                down vote










                up vote
                1
                down vote









                Just realized what was happening...I was looking at the total length of the video, but closer look showed that video portion was actually faster, but total length of file remained unchanged because audio track had not been shortened.






                share|improve this answer












                Just realized what was happening...I was looking at the total length of the video, but closer look showed that video portion was actually faster, but total length of file remained unchanged because audio track had not been shortened.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 22 at 16:54









                joe5

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