====== ffmpeg - Downloading Media ======

[[ffmpeg:Downloading Media|Downloading Media]]

----

===== Obtain information of a media file =====

<code bash>
ffmpeg -i "https://videofile.mp4"
</code>

<WRAP info>
**NOTE:**  This will return all kinds of information about the media file, such as bitrate, fps, encoded type, subtitles info, audio info, channels and more.
</WRAP>

----

===== Download a media file =====

<code bash>
ffmpeg -i "https://videofile.mp4" -c copy downloadedfile.mp4
</code>

<WRAP info>
**NOTE:**  Downloads the videolink.mp4 file and saves (copies) it as downloadedfile.mp4
</WRAP>

----

===== Download a media file =====

<code bash>
ffmpeg -i "https://videofile.mp4" -c:v libx264 -preset fast -crf 18 downloadedfile.mp4
</code>

<WRAP info>
**NOTE:**  Downloads the videolink.mp4 file and uses a fast encoding to compression speed, so the file will be quiet large but it will encode quickly.

  * The **-preset** values are:
    * ultrafast, superfast, veryfast, faster, fast, medium, slow, slower, veryslow.
  * A **slow** -preset will take longer but compress the file better.

 
  * The **-crf** is constant rate factor or quality control on the video.
    * 0 is lossless meaning it wont encode it or change its quality, FFmpeg say an output that is roughly **visually lossless** but not technically lossless is -crf 17 or -crf 18.
    * The range of the CRF scale is 0–51, 0 is lossless, 23 is the default, and 51 is the worst quality possible.
    * A -crf of around 18-21 is the sweet spot.

  * A good solid combination is to make the file slightly smaller, keep quality and do it quickly is the values used here: <code bash>
ffmpeg -i "https://videofile.mp4" -c:v libx264 -preset fast -crf 19 downloadedfile.mp4
</code>

</WRAP>





----

<code bash>
ffmpeg -i "https://inputurlstream.m3u8" -map 0:10 -map 0:11 -c copy small_output.mp4
</code>

**NOTE:**