# Extreme Video stretching in the VSE

I rendered a 10 second animation with 230 frames, but when I uploaded it into the video sequence editor in the exact same blend file it got stretched to 6 minutes making it off sync with the music.

As you can see the video is massive compared to the audio strip

I think I have to adjust the frame rate (which I do not know how), but shouldn't the lengths be the same since it's made in the same blend file?

• Did you render it as a .mkv in an older version of Blender? I seem to recall that some Matroska exports were broken but are good in recent builds. Try exporting again if you can with an alternate codec. You really should render as frame sequences before delivery anyway ;-) – 3pointedit Jul 30 at 13:07

ffmpeg -i yourfile.mkv -c:v libx264 -crf 23 -pix_fmt yuv420p -c:a copy -r 24 newfile.mkv