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I have several flac files and an image. I have succesfully created a video of the image with a single file playing in the background.

Now, I have several of these flac files and I would like to stitch them together and have the video portion be a single image.

ffmpeg -framerate 1 -i "background.jpg" -i "concat:test.flac|gold.flac" -c:v libx264 -r 30 -movflags +faststart "newout.mp4"

where test.flac and gold.flac are two of the files i want to stitch together.

Right now, only "test.flac" plays over the image. "gold.flac" does not play and the video is the exact length of only "test.flac".

Any ideas?

NoobStudios
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1 Answers1

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I solved it using the following command:

ffmpeg -i test.flac -i gold.flac -framerate 1 -i "background.jpg" -filter_complex [0:a][1:a]concat=n=2:v=0:a=1 -c:v libx264 -r 30 -movflags +faststart "newout.mp4"

I arrived at this conclusion with trial and error. I believe I was using the concat protocol that is meant to concatenate files rather than the concatenate demuxer which is used to combine streams. I might be mistaken.

Sources:

https://trac.ffmpeg.org/wiki/Concatenate

ffmpeg command for concatenate two mp3 files

NoobStudios
  • 1