A shell script that uses ffmpeg to convert your video files into the correct format for the TinyTV2. This script takes one input parameter (the path to the video file), checks if the file is already an .avi, and then converts it with the appropriate settings.

convert_to_tinytv2.sh

#!/bin/bash

# Check if the input parameter is provided
if [ -z "$1" ]; then
  echo "Error: No video file specified."
  echo "Usage: $0 <video_file>"
  exit 1
fi

INPUT_FILE="$1"
EXT="${INPUT_FILE##*.}"
BASENAME="${INPUT_FILE%.*}"
OUTPUT_FILE="${BASENAME}.avi"

# Check if the file already has an .avi extension
if [ "$EXT" == "avi" ]; then
  echo "Error: The file is already an AVI file."
  exit 1
fi

# Convert the video
ffmpeg -i "$INPUT_FILE" \
  -vf "scale=210:135:force_original_aspect_ratio=increase,crop=210:135" \
  -c:v mjpeg -q:v 4 \
  -c:a pcm_u8 -ar 10000 -ac 1 \
  -r 24 \
  "$OUTPUT_FILE"

# Check if the conversion was successful
if [ $? -eq 0 ]; then
  echo "Conversion successful: $OUTPUT_FILE"
else
  echo "Error: Conversion failed."
  exit 1
fi

Key Details of the Script:

1. Resolution and Aspect Ratio:

   • Scales the video to 210x135 with aspect ratio preservation using scale=210:135:force_original_aspect_ratio=increase.
   • Crops the video to the exact dimensions if the aspect ratio differs after scaling using crop=210:135.

2. Video Codec:

   • Converts the video to mjpeg (Baseline) with a quality setting of -q:v 4.

3. Audio Codec:

   • Converts the audio to pcm_u8 with a sample rate of 10000 Hz and 1 channel.

4. Frame Rate:

   • Sets the frame rate to 24 fps.

5. Error Handling:

   • Throws an error if the file is already an .avi or if the conversion fails.

Usage:

1. Save the script as convert_to_tinytv2.sh.
2. Make it executable:

   chmod +x convert_to_tinytv2.sh

3. Run the script with a video file as the parameter:

   ./convert_to_tinytv2.sh path/to/video.mp4

4. The converted video will be saved as path/to/video.avi.