https://github.com/dsander/reencode

Scripts to reencode media to h265 using NVENC enabled ffmpeg
https://github.com/dsander/reencode

Last synced: about 2 months ago
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Scripts to reencode media to h265 using NVENC enabled ffmpeg

• Host: GitHub
• URL: https://github.com/dsander/reencode
• Owner: dsander
• Created: 2017-05-16T20:48:41.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2018-11-04T11:55:41.000Z (over 7 years ago)
• Last Synced: 2025-03-21T04:32:12.280Z (over 1 year ago)
• Language: Ruby
• Size: 14.6 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Reencode media to HVEC using ffmpeg

These scripts reencodes your media files into HVEC to save disk space.

## Installation

Tested on Ubuntu 18.04.

Setup NVIDIA SDK and compile ffmpeg:

    wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/cuda-repo-ubuntu1804_10.0.130-1_amd64.deb

    sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/7fa2af80.pub

    sudo dpkg -i cuda-repo-ubuntu1804_10.0.130-1_amd64.deb

    sudo apt-get update

    sudo apt-get install cuda

    echo "export PATH=/usr/local/cuda-10.0/bin:~/bin:\$PATH" >> ~/.bashrc

    echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:~/ffmpeg_build/lib/"  >> ~/.bashrc

    source ~/.bashrc

    # Compile ffmpeg

    ./build_ffmpeg.sh

Reboot to load the nvidia driver.

Install dependencies:

    sudo apt-get install -y ruby ruby-dev libsqlite3-dev libmediainfo-dev

    sudo gem install bundler

    bundle

    bundle exec rake db:create

## Usage

Analyze a directory recursively and calculate the estimated conversion time and space savings:

    bundle exec ruby -Ilib reencode analyze /path/to/media

Test reencoding (the files are encoded into the current working directory):

    bundle exec ruby -Ilib reencode perform /path/to/media

Use hardware decoding (does not always work):

    bundle exec ruby -Ilib reencode perform --hardware-decode /path/to/media

Actually replace the source media file after successful reencode:

    bundle exec ruby -Ilib reencode perform --inplace /path/to/media

Allow to retry failed encoding during the next run:

    bundle exec ruby -Ilib reencode retry

Unlock all files in the database (only needed after hard crashes):

    bundle exec ruby -Ilib reencode unlock