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This patch to opus-tools adds optional support to WavPack lossless format as input to opusenc. Like support to FLAC, it depends on an external library, libwavpack, and may be disabled on configure. Lucas Clemente Vella (1): Reading input from WavPack files. Makefile.am | 7 +- configure.ac | 37 ++++++++ src/audio-in.c | 71 ++++++++-------...

Hi, I have read this on a forum: 'FLAC supports 24-bit audio fine. My understanding is that the FLAC format also handles 32-bit ints, but the reference encoder does not implement it, and FLAC has no support for float data. WavPack handles all integer bitdepths up to 32-bit and also 32-bit floats. Both codecs handle all sampling rates.' I was wondering if there are plans to support 32-bit ints and float data in the future, like WavPack does. thanks in advance -------------- next part -------------- An HTML attachment w...

...ot; - I'd > like to request that you actually say what problem you're seeing, > along with a few details. Let's not start a rumor fest here. > I actually joined this list because I wanted to see if this problem could be addressed... oh well we just tell people to use WavPack... -Justin

...y Sound Consulting On Mar 29, 2007, at 10:24, Harry Sack wrote: Hi, I have read this on a forum: 'FLAC supports 24-bit audio fine. My understanding is that the FLAC format also handles 32-bit ints, but the reference encoder does not implement it, and FLAC has no support for float data. WavPack handles all integer bitdepths up to 32-bit and also 32-bit floats. Both codecs handle all sampling rates.' I was wondering if there are plans to support 32-bit ints and float data in the future, like WavPack does. thanks in advance

...er than the original. In other words, I have never been able to reproduce the problem. I have recorded about 90 live shows in 24-bit format, up to 18 channels multitrack, and have successfully compressed over 75 GB of 24-bit audio with absolutely no errors. Why would you tell people to use WavPack when FLAC is flawless? Brian Willoughby Sound Consulting On Mar 30, 2007, at 11:34, Justin Frankel wrote: > 2007/3/29, Brian Willoughby <brianw@sounds.wa.com > <mailto:brianw@sounds.wa.com>>: > There actually is no problem with 24-bit support, as I stated > earl...

...be heard and if yes, in what audio quality sources? I have just discovered FLAC and I'm not an audio professional, but I wanted to know what the "real" difference between 32 bit float and 24 bit int precission is when comparing audio quality. And I'm also guessing for reasons why WavPack actually uses 32 bit floats. Is it true then that FLAC is not completely lossless if you look at the encoder when using 24 bit int's vs. using 32 bit float's? Does this storage thing influences the audio quality of just regular Audio-CD quality (16 bits, 44.1kHz, stereo) after compression,...

...I have recorded > about 90 live shows in 24-bit format, up to 18 channels multitrack, > and have successfully compressed over 75 GB of 24-bit audio with > absolutely no errors. > Which version of FLAC are you using, and on what platform(s)? > Why would you tell people to use WavPack when FLAC is flawless? Because FLAC in 24 bit mode doesnt work with our application! We also posted our encoder setup calls etc, and I believe we heard back that it should be fine. And everything works hunky dory in 16 bit mode.. -Justin

> Hello FLAC list. > > As far as I know 24 bit FLAC support is broken. It often doesn't > compress the audio at all, but instead stores the chunks as verbatim > type (although the FLAC format supports 24 bit). Perhaps this is fixed? > If so, do let me know. Hi Josh Green, 24-bit FLAC works perfectly, and has done so for years. I regularly make live recordings in

...problem. I have recorded about 90 live shows in 24-bit > format, up to 18 channels multitrack, and have successfully compressed > over 75 GB of 24-bit audio with absolutely no errors. > Which version of FLAC are you using, and on what platform(s)? > Why would you tell people to use WavPack when FLAC is flawless? > Because FLAC in 24 bit mode doesnt work with our application! We also posted our encoder setup calls etc, and I believe we heard back that it should be fine. And everything works hunky dory in 16 bit mode.. -Justin > Brian Willoughby > Sound Consulting > &...

...ineers and not typically for > distribution, except perhaps in scientific circles. > > Note: there are non-linear DACs for 8-bit codes, but those are not true > floating point, even though the bit code has a mantissa and exponent. > > > And I'm also guessing for reasons why WavPack actually uses 32 bit floats. > Is it true then that FLAC is not completely lossless if you look at the > encoder when using 24 bit int's vs. using 32 bit float's? Does this storage > thing influences the audio quality of just regular Audio-CD quality (16 > bits, 44.1 kHz, stereo...

"Didier Dambrin" <didid at skynet.be> wrote: ... > I like FLAC on the paper because of its metadata preservation, in that riff > tag, which is critical for my needs. Try using WavPack, http://www.wavpack.com/ This can losslessly compress 32-bit floating point WAVE-EX files, and faithfully preserves every chunk (which FLAC does not do). It is also free. Regards, Martin -- Martin J Leese E-mail: martin.leese stanfordalumni.org Web: http://members.tripod.com/martin_leese/

...ut 90 live shows in 24-bit >> format, up to 18 channels multitrack, and have successfully >> compressed over 75 GB of 24-bit audio with absolutely no errors. >> > > Which version of FLAC are you using, and on what platform(s)? > >> Why would you tell people to use WavPack when FLAC is flawless? > > Because FLAC in 24 bit mode doesnt work with our application! We also > posted our encoder setup calls etc, and I believe we heard back that > it should be fine. And everything works hunky dory in 16 bit mode.. > > -Justin

...10:24, Harry Sack wrote: > > Hi, > > I have read this on a forum: > > 'FLAC supports 24-bit audio fine. My understanding is that the FLAC > format also handles 32-bit ints, but the reference encoder does not > implement it, and FLAC has no support for float data. WavPack handles > all integer bitdepths up to 32-bit and also 32-bit floats. > > Both codecs handle all sampling rates.' > > I was wondering if there are plans to support 32-bit ints and float > data in the future, like WavPack does. > > thanks in advance >

...es the FLAC format itself have trouble compressing these signals? My current thought (or rather hope) is that its an issue with the reference encoder. Below is a set of other tests I performed on various 24 bit stereo audio samples. As you can see, FLAC often has rather comparable compression as Wavpack (under 7% or so difference). There are some cases where this difference reaches 20% though, which seems like possible candidates exhibiting this issue. Analysis of these FLAC files showed that most chunks were encoded verbatim. There is of course the possibility that the Wavpack format is able t...

...e input is the same when you expect the output to be the same. My question is the following: For any encoding option (e.g. -5, default), does the flac encoder produce the same byte-for-byte output regardless of the CPU? Regards, Fernando PS: Here is the answer of David Bryant, the developer of WavPack: "The WavPack codec is hardware independent; the standard "C" encoder will produce the same byte-for-byte output regardless of the CPU it is running on (assuming a properly working C compiler, of course)." -------------- next part -------------- An HTML attachment was scrubbed....

> PS: Here is the answer of David Bryant, the developer of WavPack: "The WavPack codec is hardware independent; the standard "C" encoder will produce the same byte-for-byte output regardless of the CPU it is running on (assuming a properly working C compiler, of course)." The same is true of flac, as long as you're using the same version o...

...@@ YES (<a href="http://www.opensource.org/licenses/index.html">OSI</a> approved license) </td> <td> - YES (Winamp, XBMC, foobar2000, CorePlayer, DirectShow-based, libavcodec-based, <a href="http://wiki.hydrogenaudio.org/index.php?title=WavPack#Players">more</a>) + YES (Winamp, XBMC, foobar2000, CorePlayer, lavc¹, DS², <a href="http://wiki.hydrogenaudio.org/index.php?title=WavPack#Players">more</a>) </td> <td bgcolor="#D4D4C0&quot...

...is that "--best --no-padding" will not create a > file that is larger than the original. Perhaps the only reason > you're seeing the file grow when flac-compressed is that you're > allowing the default padding to add to the file size. I am not > familiar with WavPack, but perhaps it does not add empty padding for > metadata. > > One of the other volunteers looking at this problem produced a 3- > minute track that was supposed to have the same problem, but it ended > up compressing quite well ... 58% of the original size. He's looking...

...t used by audio engineers and not typically for distribution, except perhaps in scientific circles. Note: there are non-linear DACs for 8-bit codes, but those are not true floating point, even though the bit code has a mantissa and exponent. > And I'm also guessing for reasons why WavPack actually uses 32 bit > floats. Is it true then that FLAC is not completely lossless if you > look at the encoder when using 24 bit int's vs. using 32 bit > float's? Does this storage thing influences the audio quality of > just regular Audio-CD quality (16 bits, 44.1 kHz...

On Thu, 2007-03-29 at 12:53 -0700, Brian Willoughby wrote: > > Hello FLAC list. > > > > As far as I know 24 bit FLAC support is broken. It often doesn't > > compress the audio at all, but instead stores the chunks as verbatim > > type (although the FLAC format supports 24 bit). Perhaps this is > fixed? > > If so, do let me know. > > Hi