You second command thus becomes: ffmpeg -y -loop 1 -qscale 1 -r 1 -b 9600 -i frame_%d.png -vf "movie=bg.png overlay=0:0" -s hd720 testvid.mp4
takes two inputs and one output, the first input is the "main" video on which the second input is overlayed. The overlay order is controlled by the order of the inputs, from the ffmpeg docs Just piped the input slit it applied image over it and overlayed the two split feeds! Probably not the most efficient way… but it worked! ffmpeg -y -r 1 -b 9600 -i frame_%d.png -vf "movie=bg.png, scale=1280:720:0:0 format=rgb32, split, fifo, overlay=0:0, overlay=0:0 fifo " -s hd720 testvid.mp4 I'm trying to make the following filter work but I'm getting the movie without the background: ffmpeg -y -qscale 1 -r 1 -b 9600 -i frame_%d.png -vf "movie=bg.png split, fifo, overlay=0:0, overlay=0:0 fifo " -s hd720 testvid.mp4 I'm wondering if I can somehow change the overlay order? According libacfilter I can split the input and play with it's content. However the problem is it's overlaying the background over the input. Using -vf I can apply the background as overlay: ffmpeg -y -qscale 1 -r 1 -b 9600 -i frame_%d.png -vf "movie=bg.png overlay=0:0 " -s hd720 testvid.mp4 My initial video making without including the background is: ffmpeg -y -qscale 1 -r 1 -b 9600 -loop -i bg.png -i frame_%d.png -s hd720 testvid.mp4 I’m willing to create an Animated PNG export preset if there is interest.I'm looking to create a video using a set of png images that have transparency merged with a static background.Īfter doing a lot of digging I seems like it's definitely possible by using the filters library. Multiple tracks will eliminate the transparency information and it’s back to the same boat we’re in today with GIF (transparency replaced with a black background).Īnimated PNG has really grown in browser support in the last few years. Remember that for transparency to work in Shotcut, all material must be on a single track. apng extensionĪlso on the “Other” tab, a line can be added for plays=10 to make the APNG loop 10 times. Other tab: remove all contents then add this line: pix_fmt=rgbaĮxport and give the filename a. The other settings on this tab don’t matter. Video tab: nothing special is needed for APNG use your normal settingsĬodec tab: change “Codec” to apng. To export as APNG, go to the Export panel and click the Advanced button. Compared to GIF, it can sometimes produce smaller file sizes along with color and transparency depth up to 24-bit.īrowser support for APNG is documented here: If project requirements allow, Animated PNG is a good alternative.
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