# FFmpex
[](https://travis-ci.org/talklittle/ffmpex)
An Elixir wrapper for the FFmpeg command line interface.
Documentation: https://hexdocs.pm/ffmpex/
## Examples
```elixir
import FFmpex
use FFmpex.Options
command =
FFmpex.new_command
|> add_global_option(option_y)
|> add_input_file("/path/to/input.avi")
|> add_output_file("/path/to/output.avi")
|> add_stream_specifier(stream_type: :video)
|> add_stream_option(option_b("64k"))
|> add_file_option(option_maxrate("128k"))
|> add_file_option(option_bufsize("64k"))
:ok = execute(command)
```
You can use the `FFprobe` module to query for file info:
```elixir
FFprobe.duration("/path/to/input.avi")
# => result in seconds, e.g., 228.456939
```
See [silent_video](https://github.com/talklittle/silent_video)
and [thumbnex](https://github.com/talklittle/thumbnex)
for more usage examples.
## Prerequisites
[FFmpeg](https://ffmpeg.org/) must be installed.
## Installation
1. Add `ffmpex` to your list of dependencies in `mix.exs`:
```elixir
def deps do
[{:ffmpex, "~> 0.4.0"}]
end
```
2. Ensure `ffmpex` is started before your application:
```elixir
def application do
[applications: [:ffmpex]]
end
```
## Configuration
You can specify some options in `config.exs`:
```elixir
config :ffmpex, ffmpeg_path: "/path/to/ffmpeg"
config :ffmpex, ffprobe_path: "/path/to/ffprobe"
```
## Release notes
See the [changelog](CHANGELOG.md) for changes between versions.
## Disclaimer
FFmpex is not affiliated with nor endorsed by the FFmpeg project.
FFmpeg is a trademark of [Fabrice Bellard](http://www.bellard.org/), originator of the FFmpeg project.
## License
FFmpex source code is licensed under the [MIT License](LICENSE.md).
