Download youtube video and trim

yt_download_and_trim.sh

#!/bin/bash

# Ask for YouTube URL
read -p "Enter YouTube video URL: " YT_URL

# Get the video title from yt-dlp
echo "Fetching video title..."
TITLE=$(yt-dlp --get-title "$YT_URL")

# Replace spaces with underscores for a safe base name
BASENAME="${TITLE// /_}"

echo "Downloading: $TITLE"
yt-dlp "$YT_URL" -o "${BASENAME}.%(ext)s"

# Find downloaded file with matching base name
echo "Looking for downloaded file..."
VIDEO_FILE=$(ls | grep "^$BASENAME\." | head -n 1)

if [[ -z "$VIDEO_FILE" ]]; then
    echo "Error: Downloaded file not found."
    exit 1
fi

echo "Downloaded file found: $VIDEO_FILE"

# Ask user if they want to trim
read -p "Do you want to trim the video? (yes/no): " TRIM

if [[ "$TRIM" =~ ^[Yy][Ee][Ss]$ ]]; then
    read -p "Enter start time (in seconds or HH:MM:SS): " START
    read -p "Enter end time (in seconds or HH:MM:SS): " END

    # Function to convert HH:MM:SS to seconds
    time_to_seconds() {
        if [[ "$1" =~ ^([0-9]+):([0-9]+):([0-9]+)$ ]]; then
            echo $((10#${BASH_REMATCH[1]} * 3600 + 10#${BASH_REMATCH[2]} * 60 + 10#${BASH_REMATCH[3]}))
        elif [[ "$1" =~ ^([0-9]+):([0-9]+)$ ]]; then
            echo $((10#${BASH_REMATCH[1]} * 60 + 10#${BASH_REMATCH[2]}))
        elif [[ "$1" =~ ^[0-9]+$ ]]; then
            echo "$1"
        else
            echo "Invalid time format" >&2
            exit 1
        fi
    }

    START_SECONDS=$(time_to_seconds "$START")
    END_SECONDS=$(time_to_seconds "$END")

    DURATION=$((END_SECONDS - START_SECONDS))
    EXT="${VIDEO_FILE##*.}"
    TRIMMED_FILE="${BASENAME}-trimmed.${EXT}"

    echo "Trimming video from $START_SECONDS to $END_SECONDS..."
    ffmpeg -ss "$START_SECONDS" -t "$DURATION" -i "$VIDEO_FILE" -y -c copy "$TRIMMED_FILE"

    echo "Trimmed video saved as: $TRIMMED_FILE"
else
    echo "Skipping trimming."
fi