Or use the subtitles filter instead of drawtext if you want the text to change on certain timestamps (you did not specify what you needed). See Resizing videos with ffmpeg to fit a specific size.Ĭhange text on the fly by atomically updating text.txt. See documentation for scale, crop, hstack, drawtext, overlay, and format filters.Ī much simpler method is to just add colored bars instead of arbitrary images. See Getting video dimension / resolution / width x height from ffmpeg for a Python friendly method using JSON or XML. $width and $height refer to the size of video.mp4. This is a simple example and won't work for all inputs such as if the video.mp4 autoscaled width is bigger than 1920, but you can deal with that by using arithmetic expressions.
left.jpg and right.png are scaled to take up the remainder so the result is 1920x1080. What this does is scale video.mp4 so it is 1080 pixels high and autoscale the width. pip show ffmpeg: Version: 1.4 ( it's the most recent on an off-topic note: It's not obligatory to use FFMPEG, I'd prefer using this library though if it doesn't offer the functionality I'm looking for, I'd highly appreciate if someone suggested something else)įfmpeg -i left.jpg -i video.mp4 -i right.png -i logo.png -filter_complex "scale=(1920-1080*($width/$height))/2:1080:force_original_aspect_ratio=increase,crop=(1920-1080*($width/$height))/2:1080 scale=-2:1080 scale=(1920-1080*($width/$height))/2:1080:force_original_aspect_ratio=increase,crop=(1920-1080*($width/$height))/2:1080 hstack=inputs=3 overlay=5:main_h-overlay_h-5:format=auto,drawtext=textfile=text.txt:reload=1:x=w-tw-10:y=h-th-10,format=yuv420p" -movflags +faststart output.mp4.In case anyone wants to try on the same versions: There were lots of articles explaining the usage of "channel layouts" (though these don't seem to fit my need). I dug into the FFMPEG library as well as the python-specific repository and wasn't able to find such an option. mp4 file whereas my Python script functions as the navigator sending the data packages to FFMPEG to process the video itself. png files, as well as the text and in the end I'll receive a. What I'm trying to achieve is to create a sort of template file in which I "just" need to input the different. svg or alike in general a "picture" in the broad sense. Element 4 represents a regularly changing text - input through the python script (probably be read from a.Element 1 and 2 are the "boarders", i.e.Element 3 is the video itself (due to it being a mobile phone screen recording, it's about the size displayed there).The output is supposed to be a 1920x1080. The goal is to embed the different video files within a "layout" - for demonstration purposes I tried to design an example picture: I'm working with multiple file formats, precisely. I'm currently trying to edit videos with the Python library of FFMPEG.
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