HOWTO: Install and use the latest FFmpeg and x264

[mc4man]

but I guess amr support is still not included despite the free libraries now available?

Yes and no...
gstreamer now supports amr thru the ugly plugin, but due to the opencore libs being GPLv3 there's no ffmpeg support, and by extension no support for apps using ffmpeg libs.
(even though 0.5.1 can support opencore, it can't atm (or ever..) be enabled in the ubuntu ffmpeg, though native amr in ffmpeg would probably be ok but it's not in 0.5.1


( the gst plugin is quite good - can be added to karmic by building or even better this ppa
https://launchpad.net/~gstreamer-dev...s/+archive/ppa

[frenkiel]

I get the following error when compiling
ffmpeg:
*

libavcodec/pthread.c:136: error: no previous prototype for ?avcodec_thread_execute2?

what do you suggest?

[madmak]

Iv been trying to build on intrepid this morning and im getting the same error

libavcodec/pthread.c:136: error: no previous prototype for 'avcodec_thread_execute2'
make: *** [libavcodec/pthread.o] Error 1

when i come to make ffmpeg aswell, i cant find anything on google about it hopefully someone here can help?

[sportspool7]

Yes, I using WinFF. If you know how, please taught one by one because I was beginner

[madmak]

i managed to get past the pthread error and build ffmpeg by using the snapshot of ffmpeg heres the link

http://ffmpeg.mplayerhq.hu/releases/...apshot.tar.bz2

im guessing it must be a temp problem with the svn version

[Linuxforall]

Yep I am getting the libavcodec error1 as well on my Karmic x64. I tried upgrading today, hope its temporary.

Update, its working now, just compiled it, must have been some error.

[mc4man]

Yes, I using WinFF

Open up winff and go edit -> preferences -> linux
You should edit the path for both ffmpeg and ffplay to where they are, if you used this guide exactly then make the paths - screen1
/usr/local/bin/ffmpeg
/usr/local/bin/ffplay

or if you wish use the browse button on the right to select (filesystem -> usr -> local -> bin

[verb3k]

"no previous prototype for 'avcodec_thread_execute2'" error fixed in svn.

[qyot27]

Yes and no...
gstreamer now supports amr thru the ugly plugin, but due to the opencore libs being GPLv3 there's no ffmpeg support, and by extension no support for apps using ffmpeg libs.

Could you explain this? There is that --enable-version3 parameter, and from http://ffmpeg.org/legal.html (emphasis mine), "FFmpeg is licensed under the GNU Lesser General Public License (LGPL) version 2.1 or later. However, FFmpeg incorporates several optional parts and optimizations that are covered by the GNU General Public License (GPL) version 2 or later. If those parts get used the GPL applies to all of FFmpeg.".

From that it seems whether something is GPLv3 (or even GPLv2) doesn't matter. But as I mostly get confused by all the stipulations and directives within the GPL and LGPL, that's only what it looks like to me. I could be wrong.

[mc4man]

Could you explain this?

Probably not too well, licensing stuff makes my head spin. My take on it is that the issue isn't ffmpeg per se but it's shared libraries and the packages that depend on it

There are quite a number of bugs threads that you could read, this one may do the trick - skip down to post 47 or so (good luck ...

https://bugs.launchpad.net/ubuntu/+s...yer/+bug/93849