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Old 20th October 2007, 00:43   #1  |  Link
jruggle
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open source MLP/TrueHD decoder

Hi,

I just wanted to point out that there is a thread on FFmpeg-devel with a patch to decode MLP/TrueHD audio. It has not yet been included in FFmpeg and is still being revised by the author, Ian Caulfield, but it's still interesting to experiment with in the meantime.

Check out the thread here:
http://lists.mplayerhq.hu/pipermail/...ead.html#36628
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Old 20th October 2007, 00:55   #2  |  Link
madshi
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Wow, this is unexpected!!

Absolutely great - though...

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Old 20th October 2007, 12:05   #3  |  Link
Mc Onyx
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Awesome, that's really wonderfull news! I dream of FFDShow combined with E-AC3 and TruHD decoders from FFMPEG, someday...
Thanks for the news...
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Old 20th October 2007, 13:48   #4  |  Link
Thunderbolt8
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is eac3 already supported or is this "only" planned yet to be done?
any information about dts-hd? is there anything related planned to be able to decode the full track and not only the core sometime in the future? then the complete audio support for HD DVDs and Blue-Rays would be perfect with ffdshow

edit: just to be 100% sure, when the final version is done it is planned to work without applying DRC, downconverting to 16-bit and applying dialog normalization, right?

Last edited by Thunderbolt8; 20th October 2007 at 16:37.
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Old 21st October 2007, 14:00   #5  |  Link
Wilbert
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Great stuff! I was afraid we needed to wait a long time for this, but i guess Xmas is early this year
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Old 22nd October 2007, 02:51   #6  |  Link
patul
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What an excellent news.. the wait will finally over soon..

Thanks for the news..
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Old 22nd October 2007, 06:10   #7  |  Link
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yeah eac3 is supported through a patch to mplayer and ffmpeg, it just hasn't been added completely, and ffdshow still hasn't added it yet either. So it's there just not being used all of the way yet.
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Old 25th October 2007, 06:12   #8  |  Link
qyot27
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Awesome. I suppose that DVD-Audio tools can come to better fruition now as a result also.

On the flip side, I wonder how long it'll take to get a working open-source encoder for it.
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Old 28th October 2007, 00:08   #9  |  Link
qubic
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Hi

Anyone successfully patched ffmpeg/mplayer?

regards qubic
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Old 30th October 2007, 17:37   #10  |  Link
Kurtnoise
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Quote:
Originally Posted by qubic View Post
Anyone successfully patched ffmpeg/mplayer?
http://kurtnoise.free.fr/index.php?dir=misc/
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Old 30th October 2007, 19:34   #11  |  Link
Thunderbolt8
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wow, does that mean MLP and eac3 do work now already properly in this version, without applying DRC and normalization?

will DTS-HD also be supported in the future? would be great, then we got all new HD sounds covered
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Old 3rd December 2007, 18:14   #12  |  Link
nightcity
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I added Kurtnoise's eac3 code into ffdshow on my pc, it works, but there is noise in left channel, the other 4 channels are all ok(I tested it on 2 HD-DVD discs), does any one has any idea with the problem?
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Old 3rd December 2007, 19:34   #13  |  Link
Jjeje007
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Hi,

The ffmpeg team included the true-hd/mlp patch into the main branch five days ago

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Old 3rd December 2007, 21:40   #14  |  Link
Wilbert
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Quote:
The ffmpeg team included the true-hd/mlp patch into the main branch five days ago
They included the parser, not the decoder.
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Old 3rd December 2007, 22:17   #15  |  Link
Adub
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Why not include the decoder as well? What good is the parser without the decoder?

Is it that they don't think it is quite "ready"?
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Old 3rd December 2007, 22:53   #16  |  Link
Wilbert
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Quote:
Is it that they don't think it is quite "ready"?
Yes, indeed. They are still discussing and correcting it:

http://lists.mplayerhq.hu/pipermail/...er/038902.html
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Old 4th December 2007, 16:26   #17  |  Link
sl1pkn07
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Originally Posted by Kurtnoise13 View Post
thanks for the ffmpeg pach!
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Old 4th December 2007, 17:12   #18  |  Link
Jjeje007
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Quote:
Originally Posted by Wilbert View Post
They included the parser, not the decoder.
Oups i thought they included both
Any way, i think this will append soon (hope so)

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Old 4th December 2007, 18:37   #19  |  Link
sl1pkn07
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@kurtnoise13

your patch failed on rev. 11162

Code:
sl1pkn07@SpinFlo:~/aplicaciones/ffmpeg-svn$ cat ffmpeg_eac3_mlp_r11045.patch | patch -p0 --dry-run
patching file ffmpeg.c
Hunk #1 succeeded at 1621 (offset 1 line).
patching file libavcodec/aac_ac3_parser.c
patching file libavcodec/aac_ac3_parser.h
patching file libavcodec/aac_parser.c
patching file libavcodec/ac3.c
patching file libavcodec/ac3.h
patching file libavcodec/ac3_parser.c
patching file libavcodec/ac3dec.c
Hunk #2 FAILED at 66.
Hunk #6 FAILED at 230.
Hunk #8 FAILED at 368.
3 out of 25 hunks FAILED -- saving rejects to file libavcodec/ac3dec.c.rej
patching file libavcodec/ac3dec.h
patching file libavcodec/ac3enc.c
patching file libavcodec/ac3tab.c
patching file libavcodec/ac3tab.h
patching file libavcodec/allcodecs.c
Hunk #2 FAILED at 286.
1 out of 2 hunks FAILED -- saving rejects to file libavcodec/allcodecs.c.rej
patching file libavcodec/avcodec.h
Hunk #1 succeeded at 274 (offset 1 line).
patching file libavcodec/eac3.h
patching file libavcodec/eac3dec.c
patching file libavcodec/Makefile
Hunk #3 FAILED at 321.
1 out of 3 hunks FAILED -- saving rejects to file libavcodec/Makefile.rej
patching file libavcodec/mlp_parser.c
patching file libavcodec/mlp_parser.h
patching file libavcodec/mlpdec.c
patching file libavformat/allformats.c
Hunk #1 succeeded at 72 with fuzz 1 (offset -3 lines).
Hunk #2 succeeded at 94 (offset -3 lines).
patching file libavformat/Makefile
Hunk #1 succeeded at 41 (offset -2 lines).
Hunk #2 succeeded at 75 (offset -2 lines).
patching file libavformat/raw.c
patching file libavformat/wav.c
sl1pkn07@SpinFlo:~/aplicaciones/ffmpeg-svn$
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Old 5th December 2007, 16:10   #20  |  Link
Kurtnoise
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well...wait a couple of days. the decoder should be committed in the svn soon.
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