I have a m4a audio file that I need to convert to a mov file. How can I do this?
How to convert an m4a to mov
file conversionm4amov
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Best Answer
This creates an x264-encoded mov file with image.png as the background:
ffmpeg -loop 1 -i image.png -i audio.m4a -c:a copy -c:v libx264 -crf 20 -pix_fmt yuv420p -shortest output.movYou can use mp4 or mkv as the container by just changing the name of the output file.
-c:a copydisables re-encoding the audio.-loop 1loops the image infinitely so that it is not shown for just one frame. It also makes the video stream infinitely long, so-shortestis needed to finish encoding after the audio stream finishes.-shortesthas to be after the input files in new versions of ffmpeg.-crf(constant rate factor) can be from 0 (lossless) to 51 (lowest quality). If you remove-pix_fmt yuv420p, ffmpeg uses yuv444p, which is not supported by many video players.You can use a black background by replacing
-loop 1 -i image.pngwith-f lavfi -i color=c=black:s=1280x720. You can resize an image by adding an option like-filter:v '[in] scale=-1:720, pad=1280:720:640-iw/2 [out]'.More information: