Comments on: Compiling WebM into FFMpeg for Windows

By: Snaky

Snaky — Thu, 17 Jun 2010 13:24:14 +0000

hi, sorry, but the video demo page does not play at all. I tried with opera labs 10.54, newest chrome and firefox – no video play. at least opera does try to play the video, but it shows only a small stripe in the middle of the player.

By: Dave Brown

Dave Brown — Mon, 07 Jun 2010 05:00:17 +0000

@matthew, I'm getting the same error, but more importantly (I think) a few lines up I see "ERROR: libvpx_vp8 not found". That "ls -l *.exe" appears to just be a convenience to show you what was made — in our case, nothing.

Above this, I'm seeing a couple possibly-relevant errors:

[CC] vp8/vp8_cx_iface.c.o
vp8/vp8_cx_iface.c:106:1: warning: "ERROR" redefined
In file included from /usr/lib/gcc/i586-mingw32msvc/4.2.1-sjlj/../../../../i586-mingw32msvc/include/windows.h:52,
from /home/dave/ffmpeg/win32-webm/src/libvpx/vp8/common/threading.h:22,
from /home/dave/ffmpeg/win32-webm/src/libvpx/vp8/encoder/onyx_int.h:27,
from vp8/vp8_cx_iface.c:15:
/usr/lib/gcc/i586-mingw32msvc/4.2.1-sjlj/../../../../i586-mingw32msvc/include/wingdi.h:313:1: warning: this is the location of the previous definition

[....]

cp: cannot stat `vp8/*.h': No such file or directory
cp: cannot stat `vpx_codec/*.h': No such file or directory

Also, note that this line in the script,

export PKG_CONFIG_PATH="$HOME/ffmpeg/win32-webm/lib/pkgconfig/"

references your home directory root-relative, so I believe you *must* run the script from there because various directories are created relative to where the script resides. I initially ran it from the Desktop where Firefox dropped it for me.

I recently upgraded my VirtualBox Ubuntu install to 10.04, so Carson's response that the Ubuntu version might need to be exact could very well be the thing, but maybe the other errors I saw will give someone a clue.

But it looks like patch-free solutions are starting to arrive anyway. Do appreciate the early effort here, even though I couldn't get it to work :-)

By: Ricardo

Ricardo — Wed, 02 Jun 2010 15:01:13 +0000

Hi Carson, altough not familiar with virtualbox i'll give it a try. lets us know when you change the script to include libvorbis

Thanks

By: carson

carson — Sat, 29 May 2010 03:04:29 +0000

@Ricardo The steps are pretty easy to follow and even on windows it would probably take an hour or so to install Virtualbox and end with an exe. I'll look at integrating in libvorbis into the example.

By: carson

carson — Sat, 29 May 2010 03:02:49 +0000

@matthew Make sure you are running the version of Ubuntu listed. I haven't tried with anything but that would be my guess.

By: Leon

Leon — Thu, 27 May 2010 17:06:34 +0000

libVorbis seems to be missing in the build. The audio generated won't be of acceptable quality.
Please read: http://xiphmont.livejournal.com/51160.html

By: Ricardo

Ricardo — Sat, 22 May 2010 18:18:38 +0000

Hi Carson!

Any chance of providing a windows ffmpeg build with libvorbis instead of the normal vorbis encoder, the audio encoded with vorbis from ffmpeg sounds insanely bad, i researched and it seems that we need to use -ac libvorbis with ffmpeg to use a different vorbis encoder with better quality

Can you help?

Thanks

By: Matthew Scheuerman

Matthew Scheuerman — Fri, 21 May 2010 19:45:38 +0000

I've had some "wierdness" running this script.

First run, it didn't download any of the necessary Ubuntu files.
Then next run downloaded all the necessary files.
Then every run after that it returns the following at the very end of the script's run

ls: cannot access *.exe: No such file or directory

This is probably my tenth time using linux and the linux terminal , so I might be doing something wrong.

Do you have any idea what's going on?

I'm going to download the binaries you linked to but I thought it might be nice to learn to do it myself.

By: Ricardo

Ricardo — Thu, 20 May 2010 23:26:38 +0000

Hello again.

His ffmpeg build using the command line he gave doesnt produce proper webm videos, unlike the other samples iveseen it only plays the audio.

Mediainfo info reports webm files as webm, the webm output produced by his ffmpeg build is recognized as mkv in mediainfo

Can you suplly a build made by you?

Thanks

By: carson

carson — Thu, 20 May 2010 22:31:15 +0000

For people looking for pre-compiled binaries I've been beat to the punch. You can find them here along with some comments on the command line options: http://micksam7.com/blog/index.php/?p=743