Once the creative part is completed – the so-called “non-linear editing” process performed within Adobe Premiere or other similar application – the result can be a simple or complex time-line of edited and assembled material. (back to video process) (more complex techniques forward to multi-layer video masking or black screen & mask)
The above screen shot is of the actual editing timeline in Adobe Premiere for the recordings of Tomás at the piano used in this process description. It shows three camera videos streams (in blue) and three stereo audio channels (in green). The camera audio is used only for synchronization – those are the narrow dark blue lines which are muted but can be turned on if needed. The pink blocks are titles.
Adobe (in this case) can provide a real-time result – bringing together the video elements and the audio mix – in fact Adobe performs a background “rendering” process. Only most recently edited video parts will not yet be viewable as a smooth result.
To ensure all video is fully “rendered” – that each frame represents exactly the correct information from each of the elements in the timeline – the “render” function is initiated.
Rendering of video is an extremely processor-intensive exercise for the computer. It can take a long time, especially for complex timelines with multiple tracks or complex effects programmed into one or more of those tracks.
The intensive nature can be “felt” by the computer getting hot and the fan gaining speed and probably not stopping until the end of the rendering process.
Encode – export.
After rendering, we have a video file containing the maximum resolution available from the edited source material. However, this file will be very large in HD or FHD or UHD. The next step of encoding allows us to create and output a chosen video file format, in a good compromise quality between compression (file size) and overall bit rate and resolution. At this stage we also include the audio mix – created within the editing software, or having been separately mixed in a dedicated audio application.
Adobe and others help us to choose this encoded export format by providing presets for YouTube, Vimeo, etc in different resolutions. Manual selection of all parameters is available as well.
The resulting exported and encoded file is the final combined video and audio product of working through the video application process. Now we can move on to distribution of the result – for example upload to YouTube, Vimeo, or to our website directly – or to use a file transmission app. such as DropBox or WeTransfer. (We used DVD back in the “old” days! – and still today for physical mailing in an envelope, the DVD as a pure storage medium to hold HD, FHD, or even short UHD video files remains a cheap viable option).