The hue filter allows for modification of the hue and saturation of a video. In the example below, the hue is set to 45 degrees with an increased saturation, as seen in figure 57.0: The hue filter also has framing and time parameters that allow for great effects like animating through hue colors quickly. Expressions […]
The color balance filter allows the RGB shadows, midtones, highlights and preserving lightness can be adjusted. This filter can be used to apply very custom color grading or used to create trippy color changes. In this example, the green shadows are increase and the blue highlights are maxed out, as seen in figure 56.0: Tip: […]
The use of a green screen is the most common way to add a subject to a scene in video production. By setting the scene at the purest green (not commonly found in nature) objects can interact on the green screen while computer generation can replace a new image in the background. With FFmpeg, this […]
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Normalization is a color correction filter that standardizes the RGB values in each frame of a video. With the use of histogram and contrast stretching, FFmpeg can quickly fix issues like rapid brightness changes and flickering. Below is an example of normalization at the highest strength: Tip: If this filter is applied to an MP4, […]
Blending has an interesting effect when two inputs are used. The blend filter has the potential to create outstanding artistic results, so let’s try it out. Tip: In order to blend two files, they must contain the same resolution. blending two videos In this example, using the difference filter applied to both video inputs gives […]
Using concat with a txt file has one catch, all the MP4s must have the exact codec, framerate, resolution, etc. An example text file is shown below (file.txt): Then run the following command to load the txt file to create a single file from the list: But how can you join multiple MP4 files that […]
Looping a section of a video can be useful for presentations or advanced video editing. In this example the input.mp4 is a 5 minute long video with the requirement that after the 1 minute mark, the video will loop 10 times. In the requirements for this example, it was stated after the 1 minute mark […]
I saw this question on Reddit and started messing with the effects recommended and totally liked the effect seen in the video below: Here’s the full script using the tmix filter: What you’ll notice here is the more frames you set the more motion effect is applied. The weights must equal the same number of […]
Stitching videos generated by the segment filter is accomplished using the concat filter. See Question, “How to Splice a Video into Segments?”, for more details on segmenting video output. Imagine you’ve generated a bunch of segments for a stream and now you need to combine them back together as the packages arrive at the client. […]