I couldn't get the surround sound to work.
Stereo and mic do work fine, but I can't enjoy my movies in AC-3.
Maurice Kinal wrote to Berki Yenig}'un <=-
@MSGID: <63790C88.48984.linux@vert.synchro.net>
Hey Berki!
AC-3 is a problem for some apps due to licensing issues. Best to avoid
it if possible. Best of luck with that.
Thanks, and I have some good news: all the AC-3 patents expired.
Well, now back to fiddling with my headsets... It kinda feels
like the good old winmodem days :/
Maurice Kinal wrote to Berki Yenig}'un <=-
@MSGID: <637965D8.48986.linux@vert.synchro.net>
Hey Berki!
I haven't heard about that ... yet. I'll check later and see what the ffmpeg - and the like - people think about it.
Just out of curiousity, given you only have two ears ... errrr you do
have two no? ... why surround sound at all on headphones? Is it that
much better that it is worth the extra hoops one has to jump through?
The following open source libraries implement AC-3:
* libavcodec in ffmpeg (LGPLv2.1+) and libav (LGPLv2.1+)
* Decoder and encoder for AC-3
* To compile only the AC-3 decoder: --disable-everything
--enable-decoder=ac3
--enable-demuxer=ac3
--enable-parser=ac3
(then enable other parsers, demuxers, muxers, decoders, and
encoders that you need)
* To compile the AC-3 decoder and the AC-3 encoder:
--disable-everything
--enable-encoder=ac3
--enable-decoder=ac3
--enable-muxer=ac3
--enable-demuxer=ac3
--enable-parser=ac3
(then enable other parsers, demuxers, muxers, decoders, and
encoders that you need)
* Warning: When preparing to use libavcodec in any product,
you should always start by disabling all encoders, decoders,
parsers, muxers, demuxers, bitstream filters, protocols,
filters, and hwaccels, then selectively enabling the
ones that your product absolutely needs. To do this, use
--disable-everything as your first ./configure option. This
will help protect your product from unnecessary intellectual
property disputes as well as some security vulnerabilities.
If you have not added --disable-everything as your first
option, you should at least manually disable the encoders,
decoders, muxers, demuxers, and parsers for eac3, mlp, and
truehd.
* liba52 (GPLv2) used by VLC and others
* Decoder only for AC-3
* valib from AC3Filter (GPLv2)
* Decoder and encoder for AC-3. Note: Build process does not
allow easy removal of patented E-AC-3 code.
I was doubtful but after hearing it, it really made a difference.
As I don't want to bother neighbors and prefer headsets anyway, I
opted for one that supports virtual surround.
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