==== Share a facebook video on whatsapp ====

Download the video:

In facebook, right click on the video -> Copy video URL at current time \\
-> paste it in fbdown.net (for public videos), fbdown.net/private-downloader.php (for private videos) \\
-> remove ?t=NNN at the end -> Download

For example, if you got
<code>
https://www.facebook.com/ubaid.hussain.507/videos/2580838562238346/?t=12
</code>

paste it and change it to
<code>
https://www.facebook.com/ubaid.hussain.507/videos/2580838562238346
</code>

Edit the video if necessary.

For example, to copy the first 10.5 seconds of src.mp4 to dest.mp4

<code>
ffmpeg -ss 00:00:00 -i src.mp4 -to 00:00:10.5 -c copy dest.mp4
</code>

Upload the video to whatsapp.