similar to: FLAC format

Hi Ingo, >It is just a WAVEFORMATEX with a GUID in it. For the ACM system it is just a format with the id >WAVE_FORMAT_EXTENSIBLE and since ACM drivers are not registered by wFormatTag it should be working. >For testing purposes I've written a Vorbis ACM driver, that uses a WAVEFORMATEXTENSIBLE and I experienced >a problem when opening files with Media Player. It spend quite some

On Dec 14, 2014, at 10:02 AM, lvqcl <lvqcl.mail at gmail.com> wrote: > Currently the header of a decoded WAV file can be different to the > original WAV file because FLAC doesn't preserve 'fmt ' chunk. > > For example: create a 24-bit stereo .wav file with WAVEFORMATEXTENSIBLE > header with channel mask == 3. Encode it to .flac then decode back to .wav. > FLAC

Hi, >That's what I wanted to say a month ago. Mr. Blum, I'm really sorry for misunderstanding you. My mistake. I choose an ACM codec because it's the only option that works on every Windows Platform, and since the DirectShow has a generic wrapper that allows it to use ACM codecs, it appeared a good idea. I didn't note that the file format was going to be a problem. But I think

At the risk of throwing more fuel on the fire, I found the following document on the Microsoft website. It appears to be the file format counterpart to the API documentation presented by Chris Wolf. I'm not familiar with the WAVE format, so I'll let you guys interpret it (or tell me it is irrelevant): http://www.microsoft.com/HWDEV/audio/multichaud.htm [As an aside: Why does Microsoft

Hi (again), I started to work on an ACM (Audio Compression Manager) for FLAC. I currently only have the canvas. The encoding/decoding is not done yet. So it's completely useless. But since the canvas is the harder thing to start, here it is. (just in case I don't have time to continue) http://mukoli.free.fr/flac-ACM.v0.1.0.zip

The commit http://git.xiph.org/?p=flac.git;a=commitdiff;h=99257e177eac96fa41a107b423080232f59ebe45 also requires some changes in write_iff_headers() function: currently flac don't write WAVEFORMATEXTENSIBLE header if decoder_session->channel_mask is equal to 0, 1 or 3. After the commit 99257e17 flac should do this for channel_mask equal to 0, 4 or 3. The patch fixes this.

On Sun, 14 Dec 2014 01:14:16 -0800 Erik de Castro Lopo <mle+la at mega-nerd.com> wrote: > > -------------------------- > > Also, I have a question. > > > > Currently flac complains about 24-bit .wav files if they have > > old WAVEFORMATEX header and not 'proper' WAVEFORMATEXTENSIBLE > > header. However it writes such files itself. > > >

On Sat, 11 Aug 2001 12:50:43 +0200, Ingo Ralf Blum wrote: >> It's a DirectShow SDK's interface. > >No, its a user mode multimedia driver. Direct Show uses filters (COM objects). > >> There's a lot of Software for Windows capable of using ACM codecs, like >> Windows Media Player, VirtualDub, VideoMach and others. > >Yes, but for Media Player you need a

A friend of mine recently had a problem with a "broken" .WAV file (as you call them) because oggenc first printed out a warning and then didn't accept the file because of a "unexpected EOF error". Because I was interested in the issue, I decided to take a look at the oggenc source, and in fact, it is your .WAV reader that's wrong. More precisely: there are two version

lvqcl wrote: ... > From FLAC 1.2.1 documentation: > > 0000-0111 : (number of independent channels)-1. Where defined, the channel > order follows SMPTE/ITU-R recommendations. The assignments are as follows: > 1 channel: mono > 2 channels: left, right > 3 channels: left, right, center > 4 channels: left, right, back left, back right > 5 channels: left, right, center,

Yep, that's the bad news, you need an ID from Microsoft to make sure this ID is only used for FLAC. But since it's a 16 bits value, you can probably put anything randomly (only few are reserved). And I don't think it's illegal to use a number like that. Ingo Ralf Blum wrote: >>WAVEFORMATEX >>yes, that's the way to know what the codec does. >>But no

Brian Willoughby wrote: > The ckSize field can be odd to represent the size of the valid data. > > However, the chunk itself must always be an even size. This requires a padding byte at the end of a chunk before the next chunk can begin, or before the end of file. The latter case is the one that most often occurs in buggy RIFF writing programs - the last chunk will have an odd ckSize and

Hi, Is there a defined format tag for Opus that should be used with the WAVEFORMATEX structure? See wFormatTag (http://msdn.microsoft.com/en-us/library/windows/desktop/dd390970.aspx). /John

Hello. I'm running the swfdec-extract tool built from the 0.6.0 source tarball under gentoo and I'm finding that it's not able to rip the MP3s from the SWF file. I'm getting this: SWFDEC: ERROR: swfdec_codec_gst.c(269): swfdec_gst_decoder_init: failed to create decoder It manages to save the file as a WAV file, but I'd prefer the MP3 to get at the ID3 info in the file.

Christian, I have successfully integrated your ACM codec in our applications, but I have run into one minor issue. In a code comment you imply that fmtnotice is an optional part of the WAVEFORMATEX extra data. I tried to play a file that had no fmtnotice but Windows did not recognize it as valid and did not play the audio. Your work is very much appreciated here and we are anxiously awaiting

Hi, how can I convert .wav files to .WAV: # file greet.* greet.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 8000 Hz greet.WAV: RIFF (little-endian) data, WAVE audio, GSM 6.10, mono 8000 Hz using 'sox'? Thanks -- Domenico Viggiani

Not sure if this belongs here or in flac-dev. I am subscribed to both, so flop it over if fits better over there. Looking at the Changelog for FLAC 1.2.1 (17-Sep-2007), it says: "With the new --keep-foreign-metadata in flac, non-audio RIFF and AIFF chunks can be stored in FLAC files and recreated when decoding." Where can I find more detail on what is a

This patch should fix ticket https://sourceforge.net/p/flac/bugs/419/ and its duplicate https://sourceforge.net/p/flac/support-requests/152/ some programs write odd value to ckSize of RIFF chunk. Not sure is it correct or not, but flac should read them anyway. -------------- next part -------------- A non-text attachment was scrubbed... Name: odd_riff_size.patch Type: application/octet-stream

>> Is there a defined format tag for Opus that should be used with the >> WAVEFORMATEX structure? See wFormatTag >> (http://msdn.microsoft.com/en-us/library/windows/desktop/dd390970.aspx). > > There isn't one. Putting Opus into RIFF is complicated by the fact that > it requires both variable-duration and variable-size frames, though I > suppose something could be

On Sun, Jun 08, 2003 at 02:06:18AM +0200, Paul Seelig wrote: > This is what i get when trying to encode a WAV file: > > ------------- snip ----------------- > [pseelig]/tmp > flac -o YouGotMail.flac YouGotMail.wav > > flac 1.1.0, Copyright (C) 2000,2001,2002,2003 Josh Coalson > flac comes with ABSOLUTELY NO WARRANTY. This is free software, and you > are welcome to