VP9 - How to build?

zerowalker · 19th June 2013, 23:20

Okay, i am not all that familiar with Mingw32, cygwin etc.

But have been trying for hours now to compile Libvpx, and to make an ffmpeg build that can encode vp9.

But i just can´t do it, i get errors here and there, and i can´t find any solutions, and i don´t know what to do anymore.

If someone could help out, i would be very grateful.

easyfab · 20th June 2013, 07:41

Can this help ?

http://wiki.webmproject.org/ffmpeg/building-with-libvpx

zerowalker · 20th June 2013, 14:36

I have followed that, exactly, but i am not able to build.
It fails on Libvorbis and Libvpx, Libvorbis says something about the configuration, so it seems to work if i remove "target....", but Libvpx fails on both, though it fails before even beginning to compile with "target...".

And as i am not familiar with this, i have no idea what to do.

Kurtnoise · 21st June 2013, 05:35

Post your errors...this might help.

In order to have VP9 support in FFmpeg, you have to patch the library...

zerowalker · 21st June 2013, 15:00

I think i am able to build Libvpx, not sure though, i changed a fail name, so not sure if it´s supposed to work or not.
The error i get though is:

[STRIP] libvpx.a < libvpx_g.a
/bin/sh: /mingw/bin/strip: Bad file number
make[1] *** [libvpx.a] Error 126
make: *** [.DEFAULT] Error 2

This goes away if i rename libvpx_g.a to libvpx.a though.

But then building ffmpeg doesn´t seem to go to well, i needed many dll files, and even after that, it didn´t seem to work.

What patch are you talking about?

JEEB · 21st June 2013, 16:20

libvpx for at least msys/mingw has been broken for quite a while regarding that (stripping the binary to not have debug symbols that "bloat it up"). There is a patch for that by a Japanese guy who builds this stuff. There also used to be a thing needing patching in some of the assembly optimizations, but I'm not sure if that is needed any more.

Regarding ffmpeg and friends, you *might* want to detail into that. Also do note that depending on the defaults/type of your mingw(-w64) toolchain many things can get linked in a shared way, in which case you will also need to distribute the DLLs in order to have the binary run. There are settings and static-by-default toolchains available on the internet, of course, should you not prefer that.

zerowalker · 22nd June 2013, 18:11

Should i change to something else then? (not msys/mingw)

Well i would prefer to not require any dll files, and have everything linked in the build.
But as i am not a programmer, i really have no real knowledge of this, how to do it, or even prevent it.

Quote:

Also do note that depending on the defaults/type of your mingw(-w64) toolchain many things can get linked in a shared way,

Not sure what you mean here, i got the normal Mingw, not the 64 bit version. Though i would like to build 64bit versions.

19th June 2013, 23:20	#1 \| Link
zerowalker Registered User Join Date: Jul 2011 Posts: 1,121	VP9 - How to build? Okay, i am not all that familiar with Mingw32, cygwin etc. But have been trying for hours now to compile Libvpx, and to make an ffmpeg build that can encode vp9. But i just can´t do it, i get errors here and there, and i can´t find any solutions, and i don´t know what to do anymore. If someone could help out, i would be very grateful.

20th June 2013, 07:41	#2 \| Link
easyfab Registered User Join Date: Jan 2002 Posts: 332	Can this help ? http://wiki.webmproject.org/ffmpeg/building-with-libvpx Last edited by Guest; 20th June 2013 at 12:59.

21st June 2013, 16:20	#6 \| Link
JEEB もこたんインしたお！ Join Date: Jan 2008 Location: Finland / Japan Posts: 512	libvpx for at least msys/mingw has been broken for quite a while regarding that (stripping the binary to not have debug symbols that "bloat it up"). There is a patch for that by a Japanese guy who builds this stuff. There also used to be a thing needing patching in some of the assembly optimizations, but I'm not sure if that is needed any more. Regarding ffmpeg and friends, you might want to detail into that. Also do note that depending on the defaults/type of your mingw(-w64) toolchain many things can get linked in a shared way, in which case you will also need to distribute the DLLs in order to have the binary run. There are settings and static-by-default toolchains available on the internet, of course, should you not prefer that. __________________ [I'm human, no debug]

20th June 2013, 14:36	#3 \| Link
zerowalker Registered User Join Date: Jul 2011 Posts: 1,121	I have followed that, exactly, but i am not able to build. It fails on Libvorbis and Libvpx, Libvorbis says something about the configuration, so it seems to work if i remove "target....", but Libvpx fails on both, though it fails before even beginning to compile with "target...". And as i am not familiar with this, i have no idea what to do.

21st June 2013, 05:35	#4 \| Link
Kurtnoise Swallowed in the Sea Join Date: Oct 2002 Location: Aix-en-Provence, France Posts: 5,191	Post your errors...this might help. In order to have VP9 support in FFmpeg, you have to patch the library...

21st June 2013, 15:00	#5 \| Link
zerowalker Registered User Join Date: Jul 2011 Posts: 1,121	I think i am able to build Libvpx, not sure though, i changed a fail name, so not sure if it´s supposed to work or not. The error i get though is: [STRIP] libvpx.a < libvpx_g.a /bin/sh: /mingw/bin/strip: Bad file number make[1] * [libvpx.a] Error 126 make: * [.DEFAULT] Error 2 This goes away if i rename libvpx_g.a to libvpx.a though. But then building ffmpeg doesn´t seem to go to well, i needed many dll files, and even after that, it didn´t seem to work. What patch are you talking about?