What version of Ubuntu & youtube-dl are you using?
To make sure you're using the latest
youtube-dl available, do the following:
sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install youtube-dl
After doing the above in Ubuntu 14.04 Trusty, I got
2018.01.07 version of
youtube-dl and was able to download the video in question:
WARNING: Assuming --restrict-filenames since file system encoding cannot encode all characters. Set the LC_ALL environment variable to fix this.
[facebook] 2032700800317930: Downloading webpage
WARNING: Your copy of avconv is outdated and unable to properly mux separate video and audio files, youtube-dl will download single file media. Update avconv to version 10-0 or newer to fix this.
[download] Destination: _-2032700800317930.mp4
[download] 100% of 3.36MiB in 00:01
The video download now fails, however, due to another reason. It will only download a single part of the video, and will not proceed further.
The reason is that
libav to combine downloaded files, while
libav available in the system is outdated –
youtube-dl expects version at least 10.0, but the system has 9.2:
dpkg -l | grep libav-tools
ii libav-tools 6:9.20-0ubuntu0.14.04.1 amd64 Multimedia player, server, encoder and transcoder
Weirdly, I could not find any quick way to install latest libav in Ubuntu 14.04.
I guess at this point the only way to make this
youtube-dl work would be to build & install libav manually – https://libav.org/download/.
Someone actually stumbled upon a similar issue that required him to figure out how to build libav. Here are the detailed step-by-step instructinos: http://xiemingzhi.github.io/2016/03/25/installing-libav-on-ubuntu-1404-trusty