Shotcut: Quick And Easy Video Editing Tutorial For Beginners:-

Pixelization, pixelisation or mosaic is any technique used in editing images or video, whereby a photo is blurred by displaying part or all of it at a markedly lower resolution. The effect is a standard graphics filter, available in all but the most basic bitmap graphics editors.

Shotcut is a free and open-source cross-platform video editing application for FreeBSD, Linux, OS X and Windows. Started in 2011 by Dan Dennedy, Shotcut is developed on the MLT Multimedia Framework, in development since 2004 by the same author.
Format
Format support through FFmpeg. Frame-accurate seeking for many formats. Supports popular image formats such as BMP, GIF, JPEG, PNG, SVG, TGA, TIFF as well as image sequences. Multi-format timeline: mix and match resolutions and frame rates within a project. Webcam and audio capture. Support for 4K resolutions. Network stream playback (HTTP, HLS, RTMP, RTSP, MMS, UDP). Frei0r video generator plugins (e.g. color bars and plasma). Color, noise, and counter generators. EDL (CMX3600 Edit Decision List) export. Export single frame as image or video as image sequence.
Audio
Audio scopes. Loudness. Peak meter. Waveform. Spectrum analyzer. Volume control. Audio filters and mixing. JACK transport sync. Tone generator. Stereo, mono, and 5.1 surround.
Video Effects
HTML5 as source and filters. Color grading tools. De-interlacing. Auto-rotate. Wipe transitions. Track compositing/blending modes. Speed and reverse effect for clips. Keyframes.
Hardware
Blackmagic Design SDI and HDMI for input and preview monitoring. Leap Motion for jog/shuttle control. Webcam capture. Audio capture to system audio card. Capture (record) SDI, HDMI, webcam (V4L2), JACK audio, PulseAudio, IP stream, and Windows DirectShow devices. Multi-core parallel image processing (when not using GPU and frame-dropping is disabled). DeckLink SDI keyer output. OpenGL GPU-based image processing with 16-bit floating point linear per color component.
Video editing is the manipulation and arrangement of video shots. Video editing is used to structure and present all video information, including films and television shows, video advertisements and video essays. Video editing has been dramatically democratized in recent years by editing software available for personal computers. Editing video can be difficult and tedious, so several technologies have been produced to aid people in this task. Pen based video editing software was developed in order to give people a more intuitive and fast way to edit video.
Though once the province of expensive machines called video editors, video editing software is now available for personal computers and workstations. Video editing includes cutting segments (trimming), re-sequencing clips, and adding transitions and other Special Effects.
• Linear video editing uses video tape and is edited in a very linear way. Several video clips from different tapes are recorded to one single tape in the order that they will appear.
• Non-linear editing systems (NLE) allow video to be edited on computers with specialized software. This process is not destructive to the raw video footage and is done by using programs such as DaVinci Resolve, Avid Media Composer, Adobe Premiere Pro and Final Cut Pro.
• Offline editing is the process by which raw footage is copied from an original source, without affecting the original film stock or video tape. Once the editing is complete, the original media is then re-assembled in the online editing stage.
• Online editing is the process of reassembling the edit to full resolution video after an offline edit has been performed. It is done in the final stage of a video production.
• Vision mixing is used when working within live television and video production environments. A vision mixer is used to cut live feed coming from several cameras in real time.