Ubuntu 9.10, VLC, streaming and AAC codec missing for ffmpeg

[hubertlepicki]

Hi guys,

I have problem with VLC not being able to stream via RTP protocol. I want to encode stream to mp3, h264 and AAC audio. While encoding video is just fine, VLC shouts at me that my FFMPEG installation is "crippled" . I guess ffmpeg package doesn't have AAC suport compiled in.

My command line is:

Code: Select all

vlc -vvv -I rc v4l2:// :v4l2-adev=/dev/dsp :input-slave=oss:// --sout "#transcode{venc=x264{keyint=60},vcodec=x264,vb=50,scale=1,width=160,height=140,acodec=aac,ab=32,channels=2,samplerate=22050}:rtp{dst=XXX.XXX.XXX.XXX,port=5432,sdp=http://0.0.0.0:5050/vlc.sdp}"

And error message printed out by VLC is:

Code: Select all

[0x22afce8] avcodec encoder debug: libavcodec initialized (interface 0x341400) [0x22afce8] avcodec encoder error: cannot find encoder MPEG AAC Audio *** Your FFMPEG installation is crippled. *** *** Please check with your FFMPEG packager. *** *** This is NOT a VLC media player issue. *** [0x22afce8] main encoder error: Streaming / Transcoding failed [0x22afce8] main encoder error: It seems your FFMPEG (libavcodec) installation lacks the following encoder: MPEG AAC Audio. If you don't know how to fix this, ask for support from your distribution. This is not an error inside VLC media player. Do not contact the VideoLAN project about this issue.

FFMPEG says it was compiled with options:

Code: Select all

FFmpeg version SVN-r19352-4:0.5+svn20090706-2ubuntu1, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --extra-version=4:0.5+svn20090706-2ubuntu1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --extra-cflags=-I/build/buildd/ffmpeg-0.5+svn20090706/debian/include --enable-shared --disable-static libavutil 49.15. 0 / 49.15. 0 libavcodec 52.20. 0 / 52.20. 0 libavformat 52.31. 0 / 52.31. 0 libavdevice 52. 1. 0 / 52. 1. 0 libavfilter 0. 4. 0 / 0. 4. 0 libswscale 0. 7. 1 / 0. 7. 1 libpostproc 51. 2. 0 / 51. 2. 0 built on Aug 26 2009 09:45:20, gcc: 4.4.1 At least one output file must be specified

Any ideas? Am I doing something wrong? Is only solution to re-compile ffmpeg with AAC support?

[hubertlepicki]

Ugh, I have spent whole day trying to do it and now when I came back it was 15 mins enough to do so... need to take break more often.

Here is what I did to enable VLC AAC output (and ffmpeg AAC in general) in plain Ubuntu 9.10 install:

Get building tools if you don't have yet:

Code: Select all

sudo apt-get install build-essential fakeroot dpkg-dev

Get build dependencies for ffmpeg:

Code: Select all

apt-get build-dep ffmpeg

Get ffmpeg's deb sources:

Code: Select all

apt-get source ffmpeg

Get faac codec for AAC:

Code: Select all

apt-get install faac libfaac0 libfaac-dev

Do something (extract?) sources:

Code: Select all

dpkg-source -x ffmpeg_0.5+svn20090706-2ubuntu1.dsc

Compile ffmpeg:

Code: Select all

cd ffmpeg_0.5+svn20090706 && DEB_BUILD_OPTIONS="--enable-faac" fakeroot debian/rules binary

Install ffmpeg and it's libraries that were packaged separately.

Code: Select all

cd .. && dpkg -i *.deb

Proper VLC command for streaming MP4 with AAC is:

Code: Select all

vlc -vvv -I rc v4l2:// :v4l2-adev=/dev/dsp :input-slave=oss:// --sout "#transcode{venc=x264{keyint=60},vcodec=x264,vb=50,scale=1,width=160,height=140,acodec=mp4a,ab=32,channels=2,samplerate=22050}:rtp{dst=XXX.XXX.XXX.XXX,port=5432,sdp=http://0.0.0.0:5050/vlc.sdp}"

Voila!

[Mana]

I had the same problem. After update to Ubuntu 9.10 no stream. Same Error

Little changes for me

Code: Select all

dpkg-source -x ffmpeg_0.5+svn20090706-2ubuntu2.dsc

Remove all ffmpeg and it's libraries packages befor installing. I used the packetmanager and uninstalled vlc too.

Code: Select all

sudo dpkg -i *.deb

Code: Select all

sudo apt-get install vlc

Now my TV Stream works on my amd64 again

Thanks hubertlepicki!!!
Without your step by step commands I would never have made it so fast.

[jankarlitos]

This didn't work for me...

What vlc version are you using? and are you downloading from the official repositories?

[jankarlitos]

Ok, it actually works.

You just need to follow these steps, and only after, reinstall vlc.

[nikolaynag]

I had the same problem on Ubuntu 10.04. The solution is clear:

Code: Select all

mkdir ffmpeg # make directory for building ffmpeg cd ffmpeg # go into created directory sudo aptitude install apt-src libfaac-dev # install apt-src and FAAC library, version # for development sudo apt-src install ffmpeg # get ffmpeg sources and automatically install # all build dependencies sudo chown -R myusername * # change owner of getted sources because they # are downloaded under sudo and have root as owner cd ffmpeg-0.5.1 # go into source tree debuild -us -uc # build ffmpeg packages, libfaac will be detected # and enabled automatically cd .. # go back to source package directory sudo dpkg -i *.deb # install builded packages

[Neocult]

I followed the instructions in the last post and it works, but on my system where I don't usually compile by myself, it is kind of overkill. I have to install 150 new packages with 380MB installation size, 980MB of code (source before and the compiled code after) and about half an hour of time (with my pc) for this "little" feature.

A much easier and more appropiate way, especially for less experienced users, is in my opinion adding medibuntu non-free repositories and reinstall ffmpeg. More details I found here: http://www.whynotwiki.com/Problem:_ffmp ... 10_to_8.04

Maybe this will help the next one finding this thread via google.