I received this warning:
Your copy of avconv is outdated,
update avconv to version 10-0 or newer if you encounter any errors.
while downloading a YouTube video with youtube-dl -f 137+140. I am using kubuntu 14.04.
What should I do to get rid of this problem?
To answer OP's question the way he wants it:
# before
$ avconv |& grep \ version | awk '{print $3}'
9.18-6:9.18-0ubuntu0.14.04.1,
$ sudo add-apt-repository ppa:heyarje/libav-11 && sudo apt-get update
$ sudo apt-get install libav-tools
# after
$ avconv |& grep \ version | awk '{print $3}'
11.3-6:11.3-1~trusty,
Alternatively, can avconv -version to get avconv latest version
By default youtube-dl uses avconv, but you can tell it to use ffmpeg instead.
Then use youtube-dl with --prefer-ffmpeg flag, e.g.:
youtube-dl -f 137+140 --prefer-ffmpeg <url>
To avoid typing that flag everytime, you can put it in the configuration file.
As stated in the error message, your version of avconv is outdated, and needs to be updated.
If you installed avconv through a package manager (such as apt-get or synaptic), you can use the following commands to update avonv:
sudo apt-get update
sudo apt-get upgrade
sudo apt-get update updates your local index of software in the Ubuntu repositories. This allows sudo apt-get upgrade to detect if any updates are available.
sudo apt-get upgrade is responisble for actually upgrading any outdated software.
Compile your own version of libav
sudo apt-get install dpkg-dev build-essential nasm pkg-config
wget https://libav.org/releases/libav-10.7.tar.gz
./configure
make
sudo cp avconv avprobe avserver /usr/local/bin/
This especially works for older distros which can't pick the latest versions of libav. Source: https://forums.linuxmint.com/viewtopic.php?t=197316
