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November 29, 2025 13:26
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YOLO Model Comparison - Side-by-Side Video Prediction Tool
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| #!/bin/bash | |
| # Script to run YOLO predictions with two models and compose results side-by-side | |
| # Check if video input is provided | |
| if [ "$#" -lt 1 ]; then | |
| echo "Usage: $0 <input_video>" | |
| echo "Example: $0 /path/to/video.mp4" | |
| exit 1 | |
| fi | |
| # Input video | |
| INPUT_VIDEO="$1" | |
| # Generate output filename: <input>_composed.avi | |
| INPUT_BASENAME=$(basename "$INPUT_VIDEO") | |
| INPUT_NAME="${INPUT_BASENAME%.*}" | |
| INPUT_DIR=$(dirname "$INPUT_VIDEO") | |
| OUTPUT_FILE="$INPUT_DIR/${INPUT_NAME}_composed.avi" | |
| # Check if input file exists | |
| if [ ! -f "$INPUT_VIDEO" ]; then | |
| echo "Error: Input video $INPUT_VIDEO does not exist" | |
| exit 1 | |
| fi | |
| # Assign model paths from arguments | |
| MODEL1="$2" | |
| MODEL2="$3" | |
| # Check if models exist | |
| if [ ! -f "$MODEL1" ]; then | |
| echo "Error: Model 1 ($MODEL1) does not exist" | |
| exit 1 | |
| fi | |
| if [ ! -f "$MODEL2" ]; then | |
| echo "Error: Model 2 ($MODEL2) does not exist" | |
| exit 1 | |
| fi | |
| # Temporary output paths | |
| TEMP_DIR=$(mktemp -d) | |
| OUTPUT1="$TEMP_DIR/model1_prediction.mp4" | |
| OUTPUT2="$TEMP_DIR/model2_prediction.mp4" | |
| echo "===================================" | |
| echo "Running YOLO Model Comparison" | |
| echo "===================================" | |
| echo "Input video: $INPUT_VIDEO" | |
| echo "Model 1: $MODEL1" | |
| echo "Model 2: $MODEL2" | |
| echo "Confidence: $CONF" | |
| echo "Output file: $OUTPUT_FILE" | |
| echo "===================================" | |
| # Run prediction with Model 1 | |
| echo "" | |
| echo "[1/3] Running prediction with Model 1..." | |
| yolo predict model="$MODEL1" source="$INPUT_VIDEO" conf="$CONF" save=True project="$TEMP_DIR" name="model1" exist_ok=True | |
| # Find the output video from model 1 | |
| MODEL1_OUTPUT=$(find "$TEMP_DIR/model1" -type f -name "*.avi" -o -name "*.mp4" | head -n 1) | |
| if [ -z "$MODEL1_OUTPUT" ]; then | |
| echo "Error: Could not find output video from Model 1" | |
| rm -rf "$TEMP_DIR" | |
| exit 1 | |
| fi | |
| mv "$MODEL1_OUTPUT" "$OUTPUT1" | |
| # Run prediction with Model 2 | |
| echo "" | |
| echo "[2/3] Running prediction with Model 2..." | |
| yolo predict model="$MODEL2" source="$INPUT_VIDEO" conf="$CONF" save=True project="$TEMP_DIR" name="model2" exist_ok=True | |
| # Find the output video from model 2 | |
| MODEL2_OUTPUT=$(find "$TEMP_DIR/model2" -type f -name "*.avi" -o -name "*.mp4" | head -n 1) | |
| if [ -z "$MODEL2_OUTPUT" ]; then | |
| echo "Error: Could not find output video from Model 2" | |
| rm -rf "$TEMP_DIR" | |
| exit 1 | |
| fi | |
| mv "$MODEL2_OUTPUT" "$OUTPUT2" | |
| # Get model names for labels | |
| MODEL1_NAME=$(basename "$MODEL1" .pt) | |
| MODEL2_NAME=$(basename "$MODEL2" .pt) | |
| # Compose videos side-by-side | |
| echo "" | |
| echo "[3/3] Composing videos side-by-side..." | |
| ffmpeg -i "$OUTPUT1" -i "$OUTPUT2" \ | |
| -filter_complex "[0:v]drawtext=text='$MODEL1_NAME':fontcolor=white:fontsize=24:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=10[v0]; \ | |
| [1:v]drawtext=text='$MODEL2_NAME':fontcolor=white:fontsize=24:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=10[v1]; \ | |
| [v1][v0]scale2ref=oh*mdar:h=in_h:[scaled1][v0]; \ | |
| [v0][scaled1]hstack[vo]" \ | |
| -map "[vo]" -c:v libx264 -crf 23 -preset medium "$OUTPUT_FILE" -y | |
| # Check if composition was successful | |
| if [ $? -eq 0 ]; then | |
| echo "" | |
| echo "===================================" | |
| echo "✓ Success!" | |
| echo "===================================" | |
| echo "Comparison video saved to: $OUTPUT_FILE" | |
| # Clean up temporary directory | |
| rm -rf "$TEMP_DIR" | |
| echo "Temporary files cleaned up" | |
| else | |
| echo "" | |
| echo "Error: FFmpeg composition failed" | |
| echo "Temporary files preserved in: $TEMP_DIR" | |
| exit 1 | |
| fi |
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