I had problems after installation. When I run ffmpeg it returns the error:

ffmpeg: symbol lookup error: ffmpeg: undefined symbol: swscale_version

Someone can help me?

do you ever want to complete the third part of your series using ffmpeg ?
-> Converting Videos with Rails: Using Background Processes

That would be really great.

THX and regards from Germany

Matz

sudo apt-get install ffmpeg

1. With my /etc/apt/sources.list on ubuntu hardy, I needed to add ‘multiverse’ to the end of each of the lines so it looked like the following


deb http://archive.ubuntu.com/ubuntu/ hardy main restricted universe multiversedeb-src http://archive.ubuntu.com/ubuntu/ hardy main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu hardy-security main restricted universe multiverse
deb-src http://security.ubuntu.com/ubuntu hardy-security main restricted universe multiverse


Then I ran sudo aptitude update to let ubuntu know I updated my sources list.

2. I couldn’t find libfaad2-dev for ubuntu hardy so I installed libfaad-dev instead using apt-get install

1. When running ./configure, some libraries were not found. For each missing lib, I went to http://packages.ubuntu.com/ and searched for the lib name, then did an “apt-get install” for the most likely-sounding module.

2. When running make, the libx264 library caused some errors so I simply reran ./configure without the –enable-libx264 flag.

3. When I tested with “ffmpeg -v” the newly installed libs weren’t found. I ran ldconfig to update the libs cache and that solved it.

Hope this helps somebody!

Today I decided to write an online video conversion tool as part of a pet project of mine and I thought, “hey, this is a good excuse to learn Ruby on Rails!” Then about 5mins later I found your blog post. Fits the bill perfectly!