[FFmpeg-user] Convert Mjpeg format to Avi format

[Ana]

Hi can someone help me,

I have a video that is a M4V format but when I put it in MediaInfo it
indicates it is a JPEG format. So from that I understand it is a MJPEG
format.

I am trying to convert it to an AVI format. I have used these two codes:

1. ffmpeg -i mjpeg -vcodec copy out.avi
2. ffmpeg -i input -vcodec mjpeg out.avi

The converted file runs faster then the original. (The original video comes
from a ClickIt DVR.
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