I'm trying to create a video from an image sequence and add audio with FFMPEG
The frame sequence is only 25 frames long but the audio is several minutes. I want FFMPEG to clip the audio to the length of the frame sequence.
This is the command I have tried:
ffmpeg -i input_images%04d.jpg -pix_fmt yuv420p -vcodec mjpeg -qmin 1 -qmax 1 -r 25 -i audio_file.mp3 -ar 22050 -ab 192k -aframes 25 output.mov
This results in a video with the first image sequence but the full length audio. -aframes is ignored. Any ideas?
Answer
From the FFmpeg documentation:
ffmpeg -i in%04d.jpg -i in.mp3 -shortest out.mov
The -shortest option finishes encoding when the shortest input stream ends.
When you're merging video and audio files, you can also copy the bitstreams to avoid encoding:
ffmpeg -i video.mp4 -i audio.m4a -c copy -map 0:v -map 1:a output.mp4
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