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Images to GIF
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ffmpeg -f image2 -framerate 9 -pattern_type glob -i "input_image_*.jpg" -vf scale=250x250 output_file.gif
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This will convert a series of image files into a gif.
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+            - ffmpeg
- starts the command+
- -f image2
- forces input or output file format. image2specifies the image file demuxer.
+- -framerate 9
- sets framerate to 9 frames per second+
- -pattern_type glob
- tells ffmpeg that the following mapping should "interpret like a glob"+
- -i "input_image_*.jpg"
- maps all files in the directory that start with input_image_, for example input_image_001.jpg, input_image_002.jpg, input_image_003.jpg... etc.
 +            (The quotation marks are necessary!)
+- -vf scale=250x250
- filter the video to scale it to 250x250; -vf is an alias for -filter:v+
- output_file.gif
- path and name of the output file+
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