ffmpeg-progress-yield 0.0.1

Run an ffmpeg command with progress

ffmpeg-progress-yield

Run an ffmpeg command with its progress yielded.

Contents:

• Requirements
• Installation
• Usage
• Caveats
• License

---

Requirements

• Python 3.6 or higher
• ffmpeg v3.1 or above from http://ffmpeg.org/ installed in your $PATH

Installation

pip3 install ffmpeg-progress-yield

Or download this repository, then run pip install ..

Usage

In your Python project, import the helper class and run run_command_with_progress:

from ffmpeg_progress_yield import FfmpegProgress

cmd = [
    "ffmpeg", "-i", "test/test.mp4", "-c:v", "libx264", "-vf", "scale=1920x1080", "-preset", "fast", "-f", "null", "/dev/null",
]

ff = FfmpegProgress(cmd)
for progress in ff.run_command_with_progress():
    print(f"{progress}/100")

The command will yield the current progress in percent.

If you have tqdm installed, you can create a fancy progress bar:

from tqdm import tqdm
from ffmpeg_progress_yield import FfmpegProgress

cmd = [
    "ffmpeg", "-i", "test/test.mp4", "-c:v", "libx264", "-vf", "scale=1920x1080", "-preset", "fast", "-f", "null", "/dev/null",
]

ff = FfmpegProgress(cmd)
with tqdm(total=100, position=1, desc="Test") as pbar:
    for progress in ff.run_command_with_progress():
        pbar.update(progress - pbar.n)

You can get the output of the command with the .stderr attribute of the FfmpegProgress class.

Caveats

Some notes:

1. The progress cannot be extracted for sources that don't have a duration (e.g. live sources).

2. Currently, we do not differentiate between stderr and stdout. This means progress will be mixed with the ffmpeg log.

License

The MIT License (MIT)

Copyright (c) 2021 Werner Robitza

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Changelog

(unreleased)

• Rename project.

• Initial commit.