![]() ![]() Using the drawtext filter: ffmpeg -i input0 -i input1 -i input2 -i input3 -filter_complex This syntax is easier to understand, but less efficient than using xstack as shown above. Using hstack and vstack ffmpeg -i input0 -i input1 -i input2 -i input3 -filter_complex "hstack=inputs=2 hstack=inputs=2 vstack=inputs=2" -map "" output Using xstack ffmpeg -i input0 -i input1 -i input2 -i input3 -filter_complex "xstack=inputs=4:layout=0_0|w0_0|0_h0|w0_h0" -map "" output If you want vertical use vstack instead of hstack. You can add silent audio with the anullsrc filter to prevent this: ffmpeg -i input0 -i input1 -filter_complex "vstack=inputs=2 anullsrc amerge=inputs=2" -map "" -map "" -ac 2 output.mp4įfmpeg -i input0 -i input1 -i input2 -filter_complex "hstack=inputs=3" -map "" output If you mix inputs that have audio and inputs that do not have audio then amerge will fail because each input needs audio. This example will use the audio from input1: ffmpeg -i input0 -i input1 -filter_complex "vstack=inputs=2" -map "" -map 1:a outputĪdding silent audio / If one input does not have audio This assumes each input contains a stereo audio stream.Use amerge (or amix) and pan filters: ffmpeg -i input0 -i input1 -filter_complex "vstack=inputs=2 amerge=inputs=2,pan=stereo|c0 ![]() For example, if both inputs are stereo, you would get a 4-channel output audio stream instead of stereo if you omit -ac 2. ac 2 is included to downmix to stereo in case both inputs contain multi-channel audio. This assumes each input contains a stereo audio stream. With audio Downmix and use original channel placementsĪdd the amerge filter to combine the audio channels from both inputs: ffmpeg -i input0 -i input1 -filter_complex "vstack=inputs=2 amerge=inputs=2" -map "" -map "" -ac 2 output This examples creates a 5px black border between the two sides.įfmpeg -i input0 -i input1 -filter_complex "pad=iw+5:color=black hstack=inputs=2" output Horizontalįfmpeg -i input0 -i input1 -filter_complex hstack=inputs=2 output Combine/stack two videos or images Verticalįfmpeg -i input0 -i input1 -filter_complex vstack=inputs=2 output It is easier and faster than other methods. Use the vstack (vertical), hstack (horizontal), or xstack (custom layout) filters. ![]()
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