render script for chunked recordings v1: it's slow, but it works
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#!/usr/bin/env bash
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set -euxo pipefail
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# This script requires you to have ffmpeg and fzf installed.
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which ffmpeg >/dev/null || (echo "Please install ffmpeg" ; exit 1)
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which fzf >/dev/null || (echo "Please install fzf" ; exit 1)
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which mpv >/dev/null || (echo "Please install mpv" ; exit 1)
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INTROS_PATH="/Users/j/dhcp24_voc_files/intros"
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OUTROS_PATH="/Users/j/dhcp24_voc_files/outros"
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CHUNKS_PATH="/Users/j/voc_obs/obs_record"
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OUTPUT_PATH="/Users/j/voc_obs/obs_record/rendered"
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# Select the appropriate files
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SELECTED_INTRO="$(find "$INTROS_PATH" -type f | sort --reverse --human-numeric-sort | fzf --delimiter / --with-nth -1 --prompt "Intro File:")"
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SELECTED_OUTRO="$(find "$OUTROS_PATH" -type f | sort --reverse --human-numeric-sort | fzf --delimiter / --with-nth -1 --prompt "Outro File:")"
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SELECTED_CHUNKS="$(find "$CHUNKS_PATH" -type f | sort --reverse | fzf --delimiter / --with-nth -1 -m --prompt "Video Chunks (use tab to select multiple):" | sort )"
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readarray -t CHUNKS_ARRAY < <(echo "$SELECTED_CHUNKS")
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# find the start-offset for the first chunk
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read -p "Do you want to play the first chunk ${CHUNKS_ARRAY[0]} to find the start-offset? (y/n) [n]: " PLAY_FIRST_CHUNK
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PLAY_FIRST_CHUNK="${PLAY_FIRST_CHUNK:-n}"
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[[ "$PLAY_FIRST_CHUNK" == "y" ]] && mpv "${CHUNKS_ARRAY[0]}" --osd-level=3 --osd-status-msg='${=time-pos}' --really-quiet
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read -p "Enter the start-offset in seconds for the first chunk ${CHUNKS_ARRAY[0]} [0]: " START_OFFSET
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START_OFFSET="${START_OFFSET:-0}"
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# find the end-offset for the last chunk
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read -p "Do you want to play the last chunk ${CHUNKS_ARRAY[-1]} to find the end-offset? (y/n) [n]: " PLAY_LAST_CHUNK
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PLAY_LAST_CHUNK="${PLAY_LAST_CHUNK:-n}"
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[[ "$PLAY_LAST_CHUNK" == "y" ]] && mpv "${CHUNKS_ARRAY[-1]}" --osd-level=3 --osd-status-msg='${=time-pos}' --really-quiet
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read -p "Enter the end-offset in seconds for the last chunk ${CHUNKS_ARRAY[0]} [1]: " END_OFFSET
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END_OFFSET="${END_OFFSET:-1}"
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cat <<EOT
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I will be rendering with the following configuration:
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+ Selected Intro: ${SELECTED_INTRO}
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+ Selected Outro: ${SELECTED_OUTRO}
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+ Video Chunks:
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+ First chunk: ${CHUNKS_ARRAY[0]}
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Starting at second ${START_OFFSET}
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+ Last chunk: ${CHUNKS_ARRAY[-1]}
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Ending at second ${END_OFFSET}
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+ All chunks:
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EOT
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for index in "${!CHUNKS_ARRAY[@]}"
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do
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echo " + $index: ${CHUNKS_ARRAY[index]}"
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done
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echo ; echo ; echo
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read -p "Do you want to proceed with this configuration? (y/n) [y]" PROCEED
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PROCEED="${PROCEED:-y}"
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[[ "$PROCEED" == "y" ]] || (echo "aborting"; exit 1)
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echo "doing ffmpeg things here"
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ARRAY_LENGTH="${#CHUNKS_ARRAY[@]}"
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if [[ ${ARRAY_LENGTH} -lt 2 ]]
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then
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echo "Too few chunks, this script can't handle this yet. Please do that on your own."
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exit 1
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fi
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#ffmpeg -i "$SELECTED_INTRO" \
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# -i "$SELECTED_OUTRO" \
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# -ss "$START_OFFSET" -i "${CHUNKS_ARRAY[0]}" \
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echo "${CHUNKS_ARRAY[@]:1:-2}"
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# -t "$END_OFFSET" -i "${CHUNKS_ARRAY[-1]}" \
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# STEP 1
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# temp dir
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WORKDIR=$(mktemp -d)
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# STEP 2
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# introfile with first chunk and crossfade encode
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ffmpeg -i "$SELECTED_INTRO" -ss "$START_OFFSET" -i "${CHUNKS_ARRAY[0]}" \
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-filter_complex \
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"[1:v:0]fade=t=in:st=0:d=0.2[x];
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[1:a:0]afade=t=in:st=0:d=0.2[a];
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[0:v:0][0:a:0]
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[x][a]
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concat=n=2:v=1:a=1
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[v0][a0]" \
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-map '[v0]' -map '[a0]' \
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-c:a aac -b:a 192k \
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-c:v libx264 -threads 0 -pix_fmt yuv420p -crf 18 -profile:v high -level 4.1 -disposition default \
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-metadata:s:a:0 language=native \
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"${WORKDIR}/introcombined.mkv"
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# STEP 3
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# outrofile with last chunk and corssface encode
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ffmpeg -i "$SELECTED_OUTRO" -t "$END_OFFSET" -i "${CHUNKS_ARRAY[-1]}" \
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-filter_complex \
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"[1:v:0]fade=t=out:st=$(($END_OFFSET - 1)):d=1.0[x];
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[1:a:0]afade=t=out:st=$(($END_OFFSET - 1)):d=1.0[a];
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[x][a]
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[0:v:0][0:a:0]
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concat=n=2:v=1:a=1
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[v0][a0]" \
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-map '[v0]' -map '[a0]' \
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-c:a aac -b:a 192k \
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-c:v libx264 -threads 0 -pix_fmt yuv420p -crf 18 -profile:v high -level 4.1 -disposition default \
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-metadata:s:a:0 language=native \
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"${WORKDIR}/outrocombined.mkv"
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# STEP 4
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# encoded intro+outro and all chunks in between with c:v copy and audio dynnorm + encode
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FFMPEG_CHUNKS=""
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FFMPEG_CONCAT=""
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if [[ ${ARRAY_LENGTH} -gt 2 ]]
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then
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for index in $(seq 1 $(( ${ARRAY_LENGTH} - 2 )) )
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do
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FFMPEG_CHUNKS="${FFMPEG_CHUNKS} -i ${CHUNKS_ARRAY[index]}"
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FFMPEG_CONCAT="${FFMPEG_CONCAT} [$((index + 1)):v:0][$((index + 1)):a:0]"
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done
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fi
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ffmpeg -i "${WORKDIR}/introcombined.mkv" -i "${WORKDIR}/outrocombined.mkv" \
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$FFMPEG_CHUNKS -filter_complex \
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"[0:v:0][0:a:0]
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$FFMPEG_CONCAT
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[1:v:0][1:a:0]
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concat=n=${ARRAY_LENGTH}:v=1:a=1
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[v][a];[a]dynaudnorm[ad]" \
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-map '[v]' -map '[ad]' \
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-c:v libx264 -threads 0 -pix_fmt yuv420p -crf 18 -profile:v high -level 4.1 -disposition default \
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-c:a aac -b:a 192k \
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-metadata:s:a:0 language=native \
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"${OUTPUT_PATH}/combinedrender.mkv"
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