Additionally, we use shortest=1 in our filter.The -stream_loop -1 argument tells FFmpeg that we want to loop the GIF.For example, if we want to add a GIF in the top-left corner, we can use the following command: $ ffmpeg -i video.mp4 -stream_loop -1 -i overlay.gif -filter_complex overlay=x=0:y=0:shortest=1 output.mp4 If you want to overlay an animated image on top of a video, simply replace the PNG input from the previous examples. Then it is passed through the next filter using, which then uses the passed through input with the next input ( ) and so on. This allows the overlay to be only shown at a specific time (0 to 4 seconds), rather than during the entire video. In each filter, we are instructing FFmpeg to use two inputs ( ) only at a specific time, specified by enable='between(t,0,4)'. We then apply multiple filters with the -filter_complex argument.Using the -i argument, we tell FFmpeg to import 4 files: the video and 3 overlay images.Here is how three images can be displayed sequentially over a video: $ ffmpeg -i video.mp4 -i overlay1.png -i overlay2.png -i overla圓.png -filter_complex overlay=enable='between(t,0,4)':x=0:y=0 overlay=enable='between(t,4,8)':x=0:y=0 overlay=enable='between(t,8,12)':x=0:y=0 output.mp4 We can do this by using multiple overlay filters for every image we want to display, and enabling those filters at the right timestamps. $ ffmpeg -i video.mp4 -i overlay.png -filter_complex overlay=x=(main_w-overlay_w-100):y=100 output.mp4 Overlaying a sequence of imagesįFmpeg also allows us to make an overlay image that changes over time. Here, the overlay is placed in the top-right corner, but with a padding of 100 pixels: $ ffmpeg -i video.mp4 -i overlay.png -filter_complex overlay=x=(main_w-overlay_w)/2:y=(main_h-overlay_h)/2 output.mp4 PaddingĪn overlay can be padded by adding or subtracting pixels from its position, as illustrated in the following example. $ ffmpeg -i video.mp4 -i overlay.png -filter_complex overlay=x=(main_w-overlay_w):y=0 output.mp4 To place the overlay in the top-right corner: $ ffmpeg -i video.mp4 -i overlay.png -filter_complex overlay=x=0:y=0 output.mp4 To place the overlay in the top-left corner: $ ffmpeg -i video.mp4 -i overlay.png -filter_complex overlay=x=(main_w-overlay_w):y=(main_h-overlay_h) output.mp4 To place the overlay in the bottom-right corner: $ ffmpeg -i video.mp4 -i overlay.png -filter_complex overlay=x=0:y=(main_h-overlay_h) output.mp4 To place the overlay in the bottom-left corner: These variables can be used to instruct FFmpeg where to place the overlay: If you just want to overlay an opaque image, you don't need to do this. Tip: You can convert any image into a transparent PNG with a service like Remove.bg. We then specify a position for the overlay, in this case the top-left corner (x=0, y=0). The part specifies that the filter should use the first (0, the video file) and second (1, the overlay file) inputs that we have provided above. We then use the -filter_complex overlay=x=0:y=0 argument to apply the overlay filter.The -i video.mp4 and -i overlay.png arguments tell FFmpeg to use these files as input.You can merge a video and overlay image using the following command: $ ffmpeg -i video.mp4 -i overlay.png -filter_complex overlay=x=0:y=0 output.mp4 For this tutorial we'll use FFmpeg 5.1.2, but any recent version will do. It's also a very robust solution for implementing video automation, as we use it extensively in our own video editing API. FFmpeg is a free and open-source video editing tool capable of trimming, cropping, concatenating, muxing, and transcoding almost any type of media file you throw at it.
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