73 lines
1.9 KiB
Bash
73 lines
1.9 KiB
Bash
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#!/bin/busybox ash
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set -euo pipefail
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cd "$(dirname "$0")"
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lecture=test_render
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mkdir -p "$lecture"
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rm "$lecture"/* || true
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for file in *.mp4; do echo "file '$(realpath "$file")'" >>"$lecture/recording.txt"; done
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function write_svg() {
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echo '<svg viewBox="0 0 1920 1080" width="1920" height="1080">'
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echo ' <rect fill="black" x="0" y="0" width="1920" height="1080"/>'
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echo ' <text x="960" y="540" fill="white" text-anchor="middle" dominant-baseline="hanging" font-family="Noto Sans">'
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echo " $1"
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echo ' </text>'
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echo '</svg>'
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}
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write_svg Intro >"$lecture/intro.svg"
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write_svg Outro >"$lecture/outro.svg"
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set -x
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ffmpeg \
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-hide_banner \
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-f concat \
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-safe 0 \
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-i "$lecture/recording.txt" \
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-af "pan=stereo|c0=c0|c1=c0,aformat=sample_rates=48000" \
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-c:v copy -b:a 128000 \
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"$lecture/recording.mp4"
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ffmpeg \
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-hide_banner \
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-vaapi_device /dev/dri/renderD128 \
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-loop 1 -i "$lecture/intro.svg" \
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-filter_complex "[0]format=nv12,hwupload[v];aevalsrc=0:s=48000[a]" \
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-map "[v]" -map "[a]" \
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-c:v h264_vaapi -r 25 -t 3 -b:a 128000 \
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"$lecture/intro.mp4"
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ffmpeg \
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-hide_banner \
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-vaapi_device /dev/dri/renderD128 \
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-loop 1 -i "$lecture/outro.svg" \
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-filter_complex "[0]format=nv12,hwupload[v];aevalsrc=0:s=48000[a]" \
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-map "[v]" -map "[a]" \
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-c:v h264_vaapi -r 25 -t 5 -b:a 128000 \
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"$lecture/outro.mp4"
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ffmpeg \
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-hide_banner \
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-vaapi_device /dev/dri/renderD128 \
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-i "$lecture/intro.mp4" \
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-i "$lecture/recording.mp4" \
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-i "$lecture/outro.mp4" \
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-i "../assets/logo.svg" \
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-i "../assets/fastforward.svg" \
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-async 1 \
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-filter_complex "
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[1:v]trim=start=2:duration=8,setpts=PTS-STARTPTS[v_tmp0];
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[1:a]atrim=start=2:duration=8,asetpts=PTS-STARTPTS[a_tmp0];
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[0:v][0:a][v_tmp0][a_tmp0][2:v][2:a]concat=n=3:v=1:a=1[v_tmp1][a_tmp1];
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[v_tmp1]format=nv12,hwupload[final_v];
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[a_tmp1]anull[final_a]
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" \
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-map '[final_v]' -map '[final_a]' \
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-c:v h264_vaapi -rc_mode CQP -global_quality 22 \
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-c:a aac -b:a 128000 \
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"$lecture/$lecture.mp4"
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