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'''Video Editing Using Blender'''

Blender is an opensource, actively developed, cross platform, 3D-multimedia suite with 2D-ability. In Video Editing using Blender series, we will learn to edit videos using Blender. The demonstration includes multi-track audio and video editing, annotation, special effects and rendering. Various Blender features are listed in the official website at, https://www.blender.org/features/ .

Blender has various interfaces, to build objects, edit them and to add animation to them. Sculpting and VFX are two other interfaces of Blender. All the interfaces have extensive tool palette. The animated objects can be edited using the video editing interface of Blender. 

The Video Editing interface allows addition a variety of effects used in movie editing. The popular L-cut, speed change, addition of various effects such as wipe effect is also possible. Selected regions can be blurred and animated in a video. Multi-layer multi-track editing is possible in Blender Video Editing interface. The edited movies can be rendered in various formats to create movies. Blender can create proxy video files to aid in editing high definition (HD) videos.

The popular animated movie, Big Bugs Bunny was created as a Blender project. Learners are referred to the Blender official website for more detailed information.  

Scientists and researchers also use Blender to build objects and use them in conjunction with scientific software such as OpenFoam. Knowledge of Python scripting is essential for adapting Blender for such advanced use.
User forums are available to reach out to Blender users. Learners can ask doubts, questions, report bugs and contribute via forums. Many add-ons are available for Blender. Python scripts can be executed in Blender. Please visit the official site for up-to-date information on this software. 

Contributors, Content Editors and Reviewers 
The Video Editing using Blender Spoken Tutorial is put together by Dr. Rani PV from IIT Bombay. Mr. Khushal Singh contributed as the domain reviewer. Ms. Madhuri Ganapathi, contributed as novice reviewer and Dr. Snehalatha Kaliappan is the administrative reviewer. 
Target Audience: Teachers, students, researchers and anyone who want to edit their videos or learn about the video editing interface of Blender.

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==Basic Level==

'''Introduction to Blender video editor'''
Download and install Blender 2.82a on Ubuntu Linux 16.04 OS
Download and install Blender 2.82a on Windows 10 OS     
Change the Blender user interface color theme 
Change Blender user interface to video editing interface
Add a video file to a channel in the sequencer panel
About audio and video color strip 
Play a video
Adjust zoom level and move the video in the preview panel
Toggle time and frame number in sequencer panel
Save a project

'''Basic Video Editing'''
Open a project
Show timeline panel and adjust the interface
Zoom in and zoom out in the sequencer panel
Show waveform for audio clip
Scroll and move in the sequencer panel
Select video and audio strips
Cut video and audio clips
Learn about soft cut and hard cut
Trim a video
Remove gap and insert gap

'''Rendering a Video'''
About render panel
Render engine and Eevee
About setting output properties
Setting resolution, fps and keyframe
Video format for the output file
Audio format for the output file
About H.264, theora, webm and AAC options
About the time taken for rendering
Render the edited video
Saving the render preset for dimensions

'''Match and Align Video and Audio'''
Add a new audio clip to a project
Cut video clip and audio clip
Cut regions, which are not needed
Match and align clips recursively
Use play, cut, trim and move to match video and audio
Move strips between channels
Mute a clip
Save a video frame as an image file

'''Build Proxy for Video Editing'''
High definition video
Change playback range
About large render time when playing video
About the time lag in video playback
Choosing a proxy setting
Reduced resolution in proxy
Rebuild proxy and timecode
Setting same proxy setting in preview panel
Viewing the effect without lag
Final render with higher definition

==Intermediate Level==

'''Add Text and Frames to a Video'''
Add text annotation to a video
Format the text size and color
How to download font style
Add shadow for text
Adjust the position of the text in the frame
Adjust start position and duration of the title clip in the video
Add color effect clip to add blank frames to the video
Change the color for the blank frames
Learn about blend mode

'''Adding Image to a Video'''
Add an image to a video
Add an effect strip
Learn about blend effects
About alpha over
Resize the image
Change opacity of the image
Position the image in the video
Adjust the duration of the image

==Advanced Level==

'''Animate Property on Strips'''
About Animate property of a strip
Choose time period to animate
About keyframe
Add keyframes in the video for animation
Set text position for animation 
Animate text location
Change speed of animation
Delete keyframe
Animate text size
Animate text color