Thread: jpg + mp3 = video

hello. have group of mp3s , associated jpgs , want create video of them. first attempt close didn't work. tried.

code:

ffmpeg -i 1.jpg -i 1.mp3 1.mp4  ffmpeg -i 2.jpg -i 2.mp3 2.mp4  ffmpeg -i 3.jpg -i 3.mp3 3.mp4  mp4box -cat 1.mp4 -cat 2.mp4 -cat 3.mp4 -new full.mp4

this works except each of images shows @ beginning 1 sec each instead of changing @ mp3 boundaries. i'm not sure how fix it. tips?

1. create segments (using current ffmpeg syntax):

code:

ffmpeg -loop 1 -i 1.jpg -i 1.mp3 -shortest -c:v mpeg2video -qscale 1 -c:a copy -y 1.mpg ffmpeg -loop 1 -i 2.jpg -i 2.mp3 -shortest -c:v mpeg2video -qscale 1 -c:a copy -y 2.mpg ffmpeg -loop 1 -i 3.jpg -i 3.mp3 -shortest -c:v mpeg2video -qscale 1 -c:a copy -y 3.mpg

depending on ffmpeg version may need change:

• -loop 1 = -loop_input
• -c:v = -vcodec
• -c:a copy = -acodec copy

2. combine files:

code:

cat 1.mpg 2.mpg 3.mpg > full.mpg

or

code:

ffmpeg -i concat:'1.mpg|2.mpg|3.mpg' -c copy full.mpg

or re-encode format:

code:

ffmpeg -i concat:'1.mpg|2.mpg|3.mpg' -c:v libx264 -preset slow -crf 24 -c:a libfaac -aq 100 full.mp4

once again, depending on ffmpeg version may need change:

• -c copy = -vcodec copy -acodec copy
• -c:v = -vcodec
• -preset = -vpre
• -c:a = -acodec

...and ffmpeg repo may not support concat protocol, cat command shown should same thing.

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