Vidiot is another free slow motion video maker software. It lets you open a video file in MP4, FLV, MOV, MPEG, OGG, AVI, MKV, F4v, M4V, etc. formats. After that, as you click on the video on its timeline, you will see various editing options including Speed. Just use the slider to reduce the speed of the video. Other editing options are opacity, crop, rotation, scaling, video key frames, etc. You can also watch the preview of the video with changed speed.
To save the video in slow motion, you need to go to Sequence > Render settings and click on Ok & Render now option. This slow motion video editor lets you customize other output parameters like video codec, audio codec, video bit rate, audio bit rate, GOP size, etc. And also, it lets you edit video metadata like album, title, artist, author, performer, encoded by, language, publisher, etc.
Coming to the range of video formats supported by Vidiot, you can import or export videos in MP4, FLV, MOV, MPEG, OGG, AVI, MKV, F4v, M4V, etc. formats.