91 lines
1.6 KiB
Bash
91 lines
1.6 KiB
Bash
#!/bin/bash
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# Where screenshots are saved.
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# SC_ROOT/SC_DIR should contain episode screenshot directories
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SC_ROOT="model_data/current"
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SC_DIR="screenshots"
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# Select a temporary working directory
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# if false, uses ramdisk.
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# set to true if ramdisk overflows.
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if false; then
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OUTPUT_DIR="model_data/video_output"
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# This directory will be deleted.
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# Make sure it doesn't already exist.
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if [ -e "$OUTPUT_DIR" ]; then
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echo "$OUTPUT_DIR exists, exiting. Please delete it manually."
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exit 1
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fi
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mkdir -p $OUTPUT_DIR
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else
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OUTPUT_DIR=$(mktemp -d)
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fi
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# Usage:
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# render_episode <src_dir> <output_name>
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#
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# Turns a directory of frame screenshots into a video.
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# Applies upscaling. We do it early, because upscaling
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# after encoding will exaggerate artifacts.
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render_episode () {
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ffmpeg \
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-y \
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-loglevel quiet \
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-framerate 30 \
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-i "$1/hackcel_%003d.png" \
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-c:v libx264 \
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-crf 20 \
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-preset slow \
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-tune animation \
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-vf "scale=512x512:flags=neighbor" \
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"$2.mp4"
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}
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echo "Making episode files..."
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for D in "$SC_ROOT/$SC_DIR"/*; do
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if [ -d "${D}" ]; then
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render_episode "$D" "$OUTPUT_DIR/${D##*/}"
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fi
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done
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echo "Merging..."
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for f in "$OUTPUT_DIR"/*.mp4; do
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echo file \'$f\' >> "$OUTPUT_DIR/video_merge_list"
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done
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# Merge videos
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ffmpeg \
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-loglevel error -stats -y \
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-f concat \
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-safe 0 \
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-i "$OUTPUT_DIR/video_merge_list" \
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"$SC_ROOT/1x.mp4"
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echo ""
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echo "Making accelerated video..."
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# Make accelerated video
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ffmpeg \
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-loglevel error -stats -y \
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-i "$SC_ROOT/1x.mp4" \
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-framerate 60 \
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-filter:v "setpts=0.125*PTS" \
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"$SC_ROOT/8x.mp4"
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echo "Cleaning up...."
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rm -dr $OUTPUT_DIR
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