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An Introduction to Ffmpeg, Davinci Resolve, Timelapse and Fulldome Video Production, Special Effects, Color Grading, Streaming

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An Introduction to Ffmpeg, Davinci Resolve, Timelapse and Fulldome Video Production, Special Effects, Color Grading, Streaming An Introduction to FFmpeg, DaVinci Resolve, Timelapse and Fulldome Video Production, Special Effects, Color Grading, Streaming, Audio Processing, Canon 5D-MK4, Panasonic LUMIX GH5S, Kodak PIXPRO SP360 4K, Ricoh Theta V, Synthesizers, Image Processing and Astronomy Software by Michael Koch, [email protected] Version from October 7, 2021 1 Contents 1 Introduction to FFmpeg .............................................................................. 9 2.27 Sharpen or blur images .................................................................. 57 1.1 What can be done with FFmpeg? .................................................... 11 2.28 Extract a time segment from a video ............................................. 58 1.2 If FFmpeg has no graphical user interface, how do we use it? .... 12 2.29 Trim filter ......................................................................................... 59 1.3 The first example .............................................................................. 14 2.30 Tpad filter, add a few seconds black at the beginning or end .... 60 1.4 Using variables ................................................................................. 15 2.31 Extract the last 30 seconds of a video .......................................... 61 2 FFmpeg in detail ....................................................................................... 16 2.32 Fade-in and fade-out ....................................................................... 62 2.1 Convert from one video format to another video format ............... 16 2.33 Crossfading ..................................................................................... 63 2.2 Change the container format ........................................................... 16 2.34 Crop a video .................................................................................... 64 2.3 Fit timelapse length to music length ............................................... 17 2.35 Add borders to a video ................................................................... 65 2.4 Timelapse or slideshow from many images, with crossfading ..... 18 2.36 Zoompan .......................................................................................... 65 2.5 Slideshow with different durations ................................................ 20 2.37 Changing the speed: slow motion and timelapse ........................ 66 2.6 Slideshow with scrolling images ..................................................... 21 2.38 Slow motion or timelapse only for a segment of the video ......... 67 2.7 Extract many images from a video .................................................. 24 2.39 Time Remapping ............................................................................. 68 2.8 Extract the first and last frame from a video .................................. 25 2.40 Insert a text which is visible for the whole duration .................... 70 2.9 Modify brightness, contrast, saturation, gamma and hue ............. 26 2.41 Slowly fade a text in and out .......................................................... 70 2.10 Strong contrast enhancement ....................................................... 27 2.42 Vertical alignment of text ................................................................ 72 2.11 Inverting a video or image (make a negative) ............................... 28 2.43 Show a running clock in the video ................................................ 73 2.12 Colorchannelmixer filter ................................................................. 30 2.44 Generation of curved text for fulldome projection ...................... 75 2.13 Day-for-Night ................................................................................... 32 2.45 Write text on a transparent layer ................................................... 78 2.14 Colorcorrect filter ............................................................................ 33 2.46 Combine multiple videos with concat demuxer ........................... 79 2.15 Colortemperature filter ................................................................... 35 2.47 Combine multiple videos with concat filter .................................. 81 2.16 Selectivecolor filter ......................................................................... 37 2.48 The "fps" filter ................................................................................. 81 2.17 Colorbalance filter .......................................................................... 39 2.49 Split a video in multiple segments ................................................ 82 2.18 Colorcontrast filter .......................................................................... 41 2.50 Switch between two cameras, using audio from camera1 .......... 83 2.19 Monochrome filter ........................................................................... 43 2.51 Stack videos side by side (or on top of each other) ................... 84 2.20 Gradation curves ............................................................................ 46 2.52 Horizontal and vertical flipping ...................................................... 84 2.21 Color grading with color look-up tables, full workflow ............... 47 2.53 Stack four videos to a 2x2 mosaic ................................................ 85 2.22 Color grading with color look-up tables, simplified workflow .... 49 2.54 Blink comparator ............................................................................ 86 2.23 Size of color-look-up tables ........................................................... 50 2.55 Creating animated GIF or PNG ...................................................... 88 2.24 Colorhold, chromahold and hsvhold ............................................ 54 2.56 Overlay an animated GIF over a video .......................................... 89 2.25 Atmospheric dispersion correction ............................................... 56 2.57 Changing the size of an animated GIF .......................................... 89 2.26 Amplify filter .................................................................................... 57 2.58 Replace one frame in a video by another ..................................... 90 2 2.59 Blend filter ....................................................................................... 91 2.97 Shifting the viewing direction in a fisheye image or video ....... 156 2.60 Circular mask (View through eyepiece) ........................................ 93 2.98 How the "drawbox" filter works ................................................... 158 2.61 Binocular view simulation .............................................................. 95 2.99 Stitching together double-fisheye videos ................................... 159 2.62 Vignetting ........................................................................................ 96 2.100 Remove stitching artefacts ........................................................ 161 2.63 Subtracting a darkframe ................................................................. 97 2.101 Stitch double-fisheye images with alignment errors ............... 165 2.64 Histogram ........................................................................................ 97 2.102 Preprocessing a flat video for fulldome projection .................. 169 2.65 Lagfun filter ..................................................................................... 98 2.103 Rotating the earth, moon or planet ............................................ 172 2.66 Deflicker a video ........................................................................... 100 2.104 Live rotation of the moon ........................................................... 177 2.67 Star trails ....................................................................................... 103 2.105 Insert a crosshair in a live video ................................................ 179 2.68 Bird trails ....................................................................................... 104 2.106 Tunnel effect ................................................................................ 180 2.69 Rainbow-trail effect ....................................................................... 107 2.107 Black hole simulation with remap filter ..................................... 184 2.70 Temporal slice-stacking effect ..................................................... 108 2.108 Wormhole simulation .................................................................. 189 2.71 Extract and merge planes, split planes ....................................... 109 2.109 Simulation of a moving wormhole ............................................. 194 2.72 Colorkey ......................................................................................... 110 2.110 Dynamically change commands with "sendcmd" or "zmq" .... 198 2.73 Chromakey ..................................................................................... 111 2.111 Sendcmd and commands ........................................................... 199 2.74 HSVkey ........................................................................................... 112 2.112 Sending commands with ZMQ ................................................... 203 2.75 Lumakey ......................................................................................... 113 2.113 FFmpeg and C# Programming ................................................... 205 2.76 Bluescreen / greenscreen ............................................................
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