59 lines
1.7 KiB
Bash
59 lines
1.7 KiB
Bash
#!/usr/bin/env bash
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# Re-encodes the video with a new primary audio channel.
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if which tput >/dev/null 2>&1; then
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ncolors=$(tput colors)
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fi
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if [ -t 1 ] && [ -n "$ncolors" ] && [ "$ncolors" -ge 8 ]; then
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RED="$(tput setaf 1)"
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GREEN="$(tput setaf 2)"
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YELLOW="$(tput setaf 3)"
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BLUE="$(tput setaf 4)"
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MAGENTA="$(tput setaf 5)"
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CYAN="$(tput setaf 6)"
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BOLD="$(tput bold)"
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NORMAL="$(tput sgr0)"
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else
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RED=""
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GREEN=""
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YELLOW=""
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BLUE=""
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MAGENTA=""
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CYAN=""
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BOLD=""
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NORMAL=""
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fi
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vid_filename=$(basename -- "$1")
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audio_filename=$(basename -- "$2")
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output_name="$3"
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if [[ $vid_filename == "" || $audio_filename == "" || $output_name == "" ]]; then
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printf "${BOLD}${RED}Usage: add-audio-to-video <video filename> <audio filename> <output name>${NORMAL}\n"
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exit 1
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fi
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vid_extension="${vid_filename##*.}"
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vid_filename="${vid_filename%.*}"
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audio_extension="${audio_filename##*.}"
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audio_filename="${audio_filename%.*}"
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output="${output_name}.$vid_extension"
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audio_encoding_opts="-c:a copy"
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if [[ $audio_extension == "wav" ]]; then
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# Re-encode the audio.
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audio_encoding_opts="-c:a aac -b:a 192k"
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fi
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printf "\n${YELLOW}${BOLD}Adding audio '$audio_filename.$audio_extension' to '$vid_filename.$vid_extension' | output: $output${NORMAL}\n"
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# -shortest handles the inputs not being the same duration. Conversion will stop when the shortest input's end is reached.
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# Alternatively you can loop with "-stream_loop -1"
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ffmpeg -y -stats -loglevel level+error -i "$vid_filename.$vid_extension" -i "$audio_filename.$audio_extension" -c:v copy -map 0:v:0 -map 1:a:0 $audio_encoding_opts -shortest "$output"
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printf "\n${GREEN}${BOLD}Finished adding audio${NORMAL}\n\n"
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