aacplus and opus not working under Ubuntu 12.10

[SeanBannister]

I just compiled Liquidsoap 1.0.1 from source under Ubuntu 12.10 but I also got these same results using the version in the Ubuntu repo. When I run the following to transcode to an AAC+ stream I get an error (shown after code):

#!/usr/bin/liquidsoap -v
stream = mksafe(input.http("http://example.com"))
source = (stream:source(2,0,0))

output.icecast(
  %aacplus(bitrate=192, samplerate=44100, channels=2),
  mount="/192.aac",
  host="example.com", port=80, password="password",
  source)

Invalid value at line 6, char 3-53: No encoder found for that format.

Please note that regular AAC works fine.

When I do the same for opus I get the following error:

Line 6, char 4 before "%": Parse error!

[toots]

Hi,

How have you compiled liquidsoap?

[SeanBannister]

I followed these instructions in the INSTALL and I left everything in PACKAGES to the default.But keep in mind I had the exact same problem with the version in the Ubuntu repo.

[toots]

So, when compiling using the PACKAGES file, you need to make sure that you compile with ocaml-aacplus to have AAC+ encoding support. With Ubuntu, you need to install libaacplus-ocaml-dynlink from http://www.deb-multimedia.org/, or to manually compile and install ocaml-aacplus.

For opus support you need liquidsoap 1.1.0 or above.

[SeanBannister]

Thanks toots.

For anyone else looking for help on this I did the following to get AAC+ working:

wget http://www.deb-multimedia.org/pool/main/liba/libaacplus/libaacplus2_2.0.2-dmo1_amd64.deb
dpkg -i libaacplus2_2.0.2-dmo1_amd64.deb

wget http://www.deb-multimedia.org/pool/main/o/ocaml-aacplus/libaacplus-ocaml_0.2.1-dmo3_amd64.deb
dpkg -i libaacplus-ocaml_0.2.1-dmo3_amd64.deb

wget http://www.deb-multimedia.org/pool/main/o/ocaml-aacplus/libaacplus-ocaml-dynlink_0.2.1-dmo3_amd64.deb
dpkg -i libaacplus-ocaml-dynlink_0.2.1-dmo3_amd64.deb

I was however surprised that the AAC+ encoding has a limit of 72kbps, this seems like a bug or uneeded limitation. Where should I post this as an issue in https://github.com/savonet/ocaml-aacplus ???

[toots]

The AAC+ encoder is very limited. I'd advise you to try the new FDK-AAC encoder, whose support was just released with liquidsoap 1.1.1. This encoder can do both AAC and AAC+ with a lot of parameters and flexibility and is expected to replace both voaac and aacplus encoders.