merge audio with a looped GIF using ffmpeg

ffmpeg-audio-gif.sh

#!/bin/bash

echo "i am paradox"


#ffmpeg -i audio.mp3 -ignore_loop 0 -i test.gif -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -shortest -strict -2 -c:v libx264 -threads 5 -c:a aac -b:a 192k -pix_fmt yuv420p -shortest final.mp4

# ffmpeg -i audio.mp3 -ignore_loop 0 -i test.gif -shortest -strict -2 -c:v libx264 -threads 5 -c:a aac -b:a 192k -pix_fmt yuv420p -shortest final.mp4

# ffmpeg -i audio.mp3 -ignore_loop 0 -i test.gif -vf "scale=trunc(iw/2)*1:trunc(ih/2)*2" -shortest -strict -2 -c:v libx264 -threads 5 -c:a aac -b:a 192k -pix_fmt yuv420p -shortest final.mp4

# ffmpeg -i audio.mp3 -ignore_loop 0 -i test.gif -vf  "scale=640:-1" -shortest -strict -2 -c:v libx264 -threads 5 -c:a aac -b:a 192k -pix_fmt yuv420p -shortest final.mp4

FRAME_RATE=24
WIDTH=640
HEIGHT=-1
AUDIO="audio.mp3"
VIDEO="video.mp4"
GIF="test.gif"
OUTPUT="merged.mp4"

# convert video to gif
ffmpeg -i $VIDEO  $GIF -hide_banner

# if you have a list of pictures to create GIF
# convert -delay 20 -loop 0 *.jpg output.gif

# merge gif and audio
ffmpeg -i $AUDIO -ignore_loop 0 -i $GIF -r $FRAME_RATE -vf scale=$WIDTH:$HEIGHT,pad=640:480:0:60:black -shortest -strict -2 -c:v libx264 -threads 8 -c:a aac -b:a 192k -pix_fmt yuv420p -shortest $OUTPUT

# if top and bottom cropping to be done
# reference: https://video.stackexchange.com/questions/4563/how-can-i-crop-a-video-with-ffmpeg
# Crop 20 pixels from the top, and 20 from the bottom:
ffmpeg -i $AUDIO -ignore_loop 0 -i $GIF -r $FRAME_RATE -vf scale=$WIDTH:$HEIGHT,pad=$WIDTH:0:0:60:black -filter:v "crop=in_w:in_h-40" -shortest -strict -2 -c:v libx264 -threads 8 -c:a aac -b:a 192k -pix_fmt yuv420p -shortest $OUTPUT


# change volume
ffmpeg -i input.mp4 -vol <volume_value> -vcodec copy out.mp4 -y

# download mp3 from youtube playlist
youtube-dl --extract-audio --audio-format mp3 -o "%(title)s.%(ext)s" <url to playlist>

ffmpeg -ss 01:32:30.0 -i video.mp4 -c copy -t 00:00:15.0 output.mp4 -y

nem todo herói usa capa... obrigado!