Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

i need to convert my video files with VP8 / Opus in Matroska(mkv) container using avconv in terminal Can anyone give example usage of it?

share|improve this question
Hi, welcome to AskUbuntu. Right now it is not really clear what your question is. Please describe what your trying to do, what maybe failed or what you want to do exactly. This help us to understand your question better and to give you a nice answer. ;-) – qbi Jan 10 '13 at 8:07
is the avconv/ffmeg a hard restriction? Or are other applications also allowed – Gerhard Burger Jan 10 '13 at 8:16
i want try it with 'libopus' – Sam Jan 10 '13 at 9:35
up vote 2 down vote accepted

Actually you can't because the Matroska container doesn't support the Opus audio codec yet.

source: Codec Specs | Matroska

Apart from that the most simple way to transcode a video with VP8 is to use transmageddon Install transmageddon

Opus support for transmageddon was added in November 2012 (just after 0.25 was released), so you'll have to wait for 0.26. (source: Gnome Transmageddon Repository)

Alternatively you can compile ffmpeg from source (otherwise you won't have VP8 or Opus) following the instructions on the ffmeg site.

share|improve this answer
is there any other container supporting opus – Sam Jan 10 '13 at 9:52
Not that I know of, but support for Matroska is in progress, once it is in Matroska it will also be supported in Webm. source: – Gerhard Burger Jan 10 '13 at 9:55
I recently compiled the opus codec and compiled ffmpeg with opus support, as I discussed here. – user76204 Jan 10 '13 at 11:34
The Ogg container handles Opus perfectly well (and has since Opus came out). – evilsoup Mar 24 '13 at 16:32

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.