====== ffmpeg - Encoding - CPU Encoding ======

Convert the video to HEVC while keeping the auto track and everything else the same.

<code bash>
ffmpeg -i input.mp4 -c:v libx265 -c:a copy -preset slow output.mp4
</code>

<WRAP info>
**NOTE:**  

  * This uses the **libx265 encoder** to encode the video into the HEVC format.
  * This will copy the audio track without re-encoding it. 
  * The **-preset slow** option will produce the highest quality output, but it will take longer to process.
</WRAP>

----

<code bash>
ffmpeg -i input.mp4 -c:v hevc -crf 23 -preset slow output.mp4
</code>

<WRAP info>
**NOTE:**  

  * This will use a constant rate factor (CRF) of 23 (medium quality).
</WRAP>

----

===== Adding Subtitles =====

<code bash>
ffmpeg -i input.mp4 -vf "subtitles=subtitle.srt:force_style='Fontsize=24'" -c:v hevc -crf 23 output.mp4
</code>

<WRAP info>
**NOTE:**  

  * **-vf**: the video filter chain for applying filters to the video, including subtitle rendering.
  * This includes subtitles from the **subtitle.srt** file with a Fontsize of 24.

</WRAP>