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• how to store ffmpeg command output file direct to filesystem aws s3 ?

  11 mai 2018, par Jinal Somaiya

  File::put(storage_path('assets/video/car.txt'), $listing->car->name);
  
  exec('ffmpeg -i '.config('medialibrary.s3.domain').'/listing_video/intromain.mp4'.' -vf "drawtext=fontfile='.storage_path('assets/video/FutuMd.ttf').': textfile='.storage_path('assets/video/car.txt').': reload=1: x=680: y=500: fontsize=55: fontcolor=white: enable=\'between(t,4,6)\'" '.config('medialibrary.s3.domain').'/listing_video/intromainfinal.mp4 ');

  I tried above code but store file of 0 B size.

  Thank you.

• ffmpeg not finding system/speaker audio device

  6 octobre 2022, par user4609276

  I'm trying to screen record with audio, and the video portion is fine but I can't record audio because ffmpeg can only find my microphone, but not my speaker/system audio.

  


  [AVFoundation indev @ 0x135f046a0] AVFoundation video devices:
[AVFoundation indev @ 0x135f046a0] [0] FaceTime HD Camera
[AVFoundation indev @ 0x135f046a0] [1] Capture screen 0
[AVFoundation indev @ 0x135f046a0] AVFoundation audio devices:
[AVFoundation indev @ 0x135f046a0] [0] MacBook Pro Microphone


  


  Python Code

  


  os.system(f"""ffmpeg -f avfoundation -video_device_index 1 -i "default:none" -t 00:00:05 -y -r 10 recording{x}.mov""")


  


  Is there a reason why it's not picking up the system audio ? I tried looking around and struggling to find an answer.

  


  Thanks in advance

  


• Script doesnt recognize bars / length right for cutting audio , ffmpeg terminal

  14 avril 2024, par totzillarbeats

  This terminal script doesn't recognize bars / length right for cutting audio, maybe somebody knows what's wrong with the calculation ...

  


  Would be happy about any help the cutting already works !

  


  #!/bin/bash

# Function to extract BPM from filename

get_bpm() {
    local filename="$1"
    local bpm=$(echo "$filename" | grep -oE '[0-9]{1,3}' | head -n1)
    echo "$bpm"
}

# Function to cut audio based on BPM
cut_audio() {
    local input_file="$1"
    local bpm="$2"
    local output_file="${input_file%.*}_cut.${input_file##*.}" # Appends "_cut" to original filename

    # Define the number of beats per bar (assuming 4 beats per bar)
    beats_per_bar=4

    # Calculate the duration of each bar in seconds
    bar_duration=$((60 * beats_per_bar / bpm))

    # Define start and end times for each bar range
    start_times=(0 21 33 45 57 69 81 93 105 117 129 141)
    end_times=(20 29 41 53 65 77 89 101 113 125 137 149)

    # Iterate through each bar range
    for ((i = 0; i < ${#start_times[@]}; i++)); do
        start_time=${start_times[$i]}
        end_time=${end_times[$i]}
        echo "Cutting audio file $input_file at $bpm BPM for bar $((i + 1)) ($start_time-$end_time) for $bar_duration seconds..."

        # Cut audio for current bar range using ffmpeg
        ffmpeg -i "$input_file" -ss "$start_time" -to "$end_time" -c copy "$output_file"_"$((i + 1)).${input_file##*.}" -y
    done

    # Check if the output files are empty and delete them if so
    for output_file in "${output_file}"_*; do
        if [ ! -s "$output_file" ]; then
            echo "Output file $output_file is empty. Deleting..."
            rm "$output_file"
        fi
    done

    echo "Audio cut and saved as $output_file"
}


# Main script
if [ "$#" -eq 0 ]; then
    echo "Usage: $0 [audio_file1] [audio_file2] ..."
    exit 1
fi

for file in "$@"; do
    bpm=$(get_bpm "$file")
    if [ -z "$bpm" ]; then
        echo "Error: No BPM found in filename $file"
    else
        cut_audio "$file" "$bpm"
    fi
done


  


  Maybe its only the math calc in the beginning but idk :)

  


  If you need more details just lmk