How to overlay a picture on a video | Advanced dynamic settings to add a photo
Today, we show how to add a picture on a video using the advanced settings / options from ffmpeg. This process can actually be used to overlay any types of photos (.jpg, .png, .gif) or image to a video. All parameters can be customized to suit your needs.
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EXAMPLES
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❶ Picture overlay. Dynamic position
→ ffmpeg -i input.mp4 -vf "movie=image.jpg[layer];[in][layer]overlay=t*64:t*36[out]" output01.mp4
with:
-i input.mp4 = Reads file «input.mp4» and …
-vf "movie=image.jpg [layer] = … imports «image.jpg» calling it [layer].
[in][layer] = Loads, in order, the original video ([in]) and the layer ([layer])…
overlay = … and overlays both (last loaded on top)…
t*64 = … moving the overlaid picture by 64 pixels horizontally …
t*36 = … and by 36 pixels vertically every (t) second …
[out] = … calling the result [out].
output01.mp4 = Outputs finally the whole to file «output01.mp4»
❷ Picture overlay centered. Blinking effect
→ ffmpeg -i input.mp4 -vf "movie=image.jpg[layer];[layer]scale=400:-1[layer2];[in][layer2]overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2:enable='lt(mod(t,3),1)'[out]" output02.mp4
with:
-i input.mp4 = Reads file «input.mp4» and …
-vf "movie=image.jpg [layer] = … imports «image.jpg» calling it [layer].
[layer]scale=400:-1[layer2] = Resizes now [layer] to 400 pixels width calling the result [layer2]… Note: -1 means keeps initial proportions so the height is automatically calculated (in this case = 225)
[in][layer2] overlay = … and overlays, as before, the resulting [layer2] on top of the original video [in]…
(main_w-overlay_w)/2:(main_h-overlay_h)/2 = … setting the picture so that it appears centered …
enable='lt(mod(t,3),1) = … while appearing every 3 seconds…
[out] = … calling the result [out].
output02.mp4 = Outputs finally the whole to file «output02.mp4»
❸ Picture overlay. Dynamic position time enabled
→ ffmpeg -i input.mp4 -vf "movie=image.jpg[layer];[layer]scale=400:-1[layer2];[in][layer2]overlay=t*128:'if(lt(t,5),0,(t-5)*72)':enable='between(t,0,3)+between(t,5,9)'[out2]" output03.mp4
with:
-i input.mp4 = Reads file «input.mp4» and …
-vf "movie=image.jpg [layer] = … imports «image.jpg» calling it [layer].
[layer]scale=400:-1 [layer2] = Resizes now [layer] to 400 pixels width calling the result [layer2]… Note: -1 means keeps initial proportions so the height is automatically calculated (in this case = 225)
[in][layer2] overlay = … and overlays, as before, the resulting [layer2] on top of the original video [in]…
enable='between(t,0,3) = … showing the picture between seconds 0 and 3 …
t*128 = … moving horizontally at 128 pixels per second … Note: between seconds 0 and 3 the value for y calculated per statement if(lt(t,5),0,(t-5)*72) gives us 0
between(t,5,9) = … and between seconds 5 and 9 …
t*128:'if(lt(t,5),0,(t-5)*72) = … moving horizontally at 128 pixels per second and vertically at 72 pixels per second …. Note: between seconds 5 and 9 the value for y calculated per statement if(lt(t,5),0,(t-5)*72) gives us y=(t-5)*72 i.e. starts at y=0 when t =5
[out2] = … calling the result [out2].
-output03.mp4 = Outputs finally the whole to file «output03.mp4»
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MUSIC
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