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seq_speedup![](./images/after.gif)
seq_speedup seq 1/factor
seq_speedup scales the sequence in the time dimension. "seq_speedup $seq 2.0" is equivalent to "seq_scale $seq 0.5".
To see original MPEG-movie click on the left image. To see MPEG-movie with applied effect click on right image.![](images/fb_orig.jpg)
![](images/fb_new.jpg)
Example: seq_speedup rivl_seq1 2.0