Better FFmpeg Progress

Runs an FFmpeg command and uses tqdm to show a progress bar. Here's an example:

39%|███████████████████████████████████████████ | 23.581/60.226 [00:19<00:34, 1.07s/s]

Where:

• 39% is the percentage progress.
• 23.581 seconds of the input file have been processed.
• 60.226 is the duration of the input file in seconds.
• 00:19 is the time elapsed since the FFmpeg process started.
• 00:34 is the estimated time required for the FFmpeg process to complete.
• 1.07 shows how many seconds of the input file are processed per second.

Installation:

pip3 install better-ffmpeg-progress --upgrade

Usage:

Create an instance of the FfmpegProcess class and supply a list of arguments like you would to subprocess.run():

from better_ffmpeg_progress import FfmpegProcess
# Pass a list of FFmpeg arguments, like you would if using subprocess.run()
process = FfmpegProcess(["ffmpeg", "-i", "input.mp4", "-c:a", "libmp3lame", "output.mp3"])
# Use the run method to run the FFmpeg command.
process.run()

The run method takes the following optional arguments:

• progress_handler

  • You can create a function if you want to retrieve the percentage progress, speed and ETA rather to do something specific with the aforementioned metrics. The function will receive:

    • Percentage progress (float)
    • Speed (string), e.g. 22.3x
    • ETA in seconds (float)

    Here's an example of a progress handler that you can create:

    def handle_progress_info(percentage, speed, eta):
        print(f"The FFmpeg process is {percentage}% complete. ETA is {eta} seconds based on the current speed ({speed}).)

    Then you simply set the value of the progress_handler argument to the name of your function, like so:

    process.run(progress_handler=handle_progress_info)

• ffmpeg_output_file

  • The ffmpeg_output_file argument allows you define where you want the output of FFmpeg to be saved. By default, this is saved in a folder named "ffmpeg_output", with the filename [<input_filename>].txt, but you can change this using the ffmpeg_output_file argument.

Here's an example where both the progress_handler and ffmpeg_output_file parameters are used:

process.run(progress_handler=handle_progress_info, ffmpeg_output_file="ffmpeg_log.txt")