Better FFmpeg Progress

Runs an FFmpeg command and shows a progress bar with percentage progress, time elapsed and ETA.

The Rich library is used for the progress bar by default, tqdm will be used if you pass use_tqdm=True to the run method.

FFmpeg outputs something like:

frame=  692 fps= 58 q=28.0 size=    5376KiB time=00:00:28.77 bitrate=1530.3kbits/s speed=2.43x

Better FFmpeg Progress outputs something like:

⠏ Processing abc.webm ━━━━━━━━━╺━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━  23% 0:00:04 00:15

Where:

• Processing abc.webm is the description of the progresss bar.
• 23% is the percentage progress.
• 0:00:04 is the time elapsed.
• 00:15 is the estimated time until the FFmpeg process completes.

As you can see, the output of Better FFmpeg Progress is much more useful.

Installation

pip 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() or subprocess.Popen().

Example:

from better_ffmpeg_progress import FfmpegProcess, FfmpegProcessError

command = [
    "ffmpeg",
    "-i",
    "https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4",
    "-c:v",
    "libx264",
    "-preset",
    "ultrafast",
    "-c:a",
    "copy",
    "-f",
    "null",
    "-",
]

try:
    process = FfmpegProcess(command)
    # Uncomment the line below if you want to use tqdm instead of rich for the progress bar
    # process.use_tqdm = True

    # Run the FFmpeg command and show a progress bar
    process.run()
    # The FFmpeg process failed if the return code is not 0
    if process.return_code != 0:
        pass
except FfmpegProcessError as e:
    print(f"An error occurred when running the better-ffmpeg-process package:\n{e}")

Optional Arguments

An instance of the FfmpegProcess class takes the following optional arguments:

• ffmpeg_log_level - Desired FFmpeg log level. Default: "verbose"
• ffmpeg_log_file - The filepath to save the FFmpeg log to. Default: <input filename>_log.txt
• print_detected_duration - Print the detected duration of the input file. Default: False
• print_stderr_new_line - If better progress information cannot be shown, print FFmpeg stderr in a new line instead of replacing the current line in the terminal. Default: False

The run method takes the following optional arguments:

• print_command - Print the FFmpeg command being executed. Default: False