search for: vorbisinfo

Hi, Maybe this is documented somewhere, if so, please send me a link to the documentation. My question is: how to set up different (VBR, CBR, ABR) modes when calling the Ogg Vorbis API? Currently I do: CBR: ret = vorbis_encode_setup_managed( &vorbisInfo, getInChannel(), getOutSampleRate(), -1, getOutBitrate() * 1000, -1) || vorbis_encode_ctl(...

...while(!audiobufReady){ //1)try to decode some data while(!audiobufReady){ float **pcm; //if there's pending, decoded audio, grab it if((size=vorbis_synthesis_pcmout(&vorbisDspState,&pcm))>0){ int count=audiobufFill/2; int maxsamples=(fragsize-audiobufFill)/vorbisInfo.channels/2;// /2 int i; for(i=0; i<size && i<maxsamples; i++){ for(int j=0;j<vorbisInfo.channels;j++){ int val=(int) (pcm[j][i]*32767.f); if(val>32767) val=32767; if(val<-32768) val=-32768; audiobuf[count++]=val; } } vorbis_sy...

Hi, I'm experimenting with managed mode encoding with specifying maximum bitrate. I call: vorbis_encode_init( &vorbisInfo, 2, 44100, -1, 96000, 96000); to initialize the encoding. To my surprise, it seems the maxbitrate value of 96000 doesn't have an effect, the bitrate of the generated vorbis audio hovers a...

Hi, I'm experimenting with IceCast2, using DarkIce to generate the stream. I have found some peculiarities with the vorbis bitrates. In DarkIce, I call vorbis_encode_init() with about the following values: vorbis_encode_init( &vorbisInfo, 2, 44100, 96, 96, 96); which by all reasons should generate a 96 kb/s stream, as all max_bitrate, nominal_bitrate and min_bitrate are set to 96. Strangely enough, the generated stream's bitrate (according to XMMS and WinAmp) varies between 49 and 59. If I try to set the same bitrate to a low...

First off, I don't even know if this is the right place to ask these kind of questions, but I haven't been able to find answers anywhere else, so 1. I have found that "pcmTotal * vorbisInfo->channels * 2" gives the uncompressed size of every ogg vorbis file I have used. What is a more robust way of getting the full uncompressed file size? 2. How do I read a certain amount of ms of data? For example, I have been using sizeUncompressed / seconds / 4 (using the above method to g...

For those of you not of the commit mailing list, I wanted to point out that monty has checked the fixed-point 'tremor' vorbis decoder into xiph.org cvs, under the usual (free) xiph license. This was developed for use in embedded devices, so if you've been waiting for an interger-only (no fpu) implementation, you might want to give it a try. The code is in the 'Tremor' cvs

...and re-build all, so it's the same the project files for for both builds. Here the snippet of code that fails: int processOGG(FILE *inFile, char fileName [], int fileSize, int fileType) { ogg_int64_t dataLength = 0; PM3ULIST listBuff = 0; OggVorbis_File vf = {0}; vorbis_info *vorbisInfo = NULL; fseek(inFile, 0, SEEK_SET); if (debug > 0) { printf("About to open file as vorbis\n"); } if(ov_open(inFile, &vf, NULL, 0) < 0) { fprintf(stderr, "Failed to open file as vorbis. File ignored '%s'\n", fileName);...

Hi, It's a bit offtopic for this list, but you might be able to help. For libvorbis rc3, what is the correct bitrate parametrization for the call vorbis_encode_init()? For rc2, it worked calling it the following way: vorbis_encode_init( &vorbisInfo, 2, // two channels 44100, // 44.1kHz -1, 96000, // 96kb/s -1 ); And this produced an Ogg Vorbis stream of about 80 kbps on average. But in...

I'm not sure that this is not my fault, but here it goes: I'm trying to encode a 22 kHz Mono stream. I started with the encoder example and made it take dynamic channels etc. This is how I init it: vorbis_info_init(&VorbisInfo); vorbis_encode_init(&VorbisInfo, 1, 22050, -1, 128000, -1); then I get a crash in: _vp_quantize_couple(vorbis_look_psy * 0x01e6a6ec, vorbis_info_mapping0 * 0x017c1988, float * * 0x01ea3ce0, float * * 0x00120754, float * * 0x00120758, int * 0x00120760, int 0) line 1021 + 35 bytes mapping0_for...

Hello, I'm trying to encode a raw audio file (16kHz or 22050Hz, stereo) in an ogg file by using vorbis-java library. I always obtain an error when calling: encoder.vorbis_encode_init_vbr( vorbisInfo, 2, 22050, 1); The error is: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1 at org.xiph.libvorbis.vorbisenc.get_setup_template(vorbisenc.java:321) at org.xiph.libvorbis.vorbisenc.vorbis_encode_setup_vbr(vorbisenc.java:65) at org.xiph.libvorbis.vorbisenc.vorbis_...

> vorbis_encode_init( &vorbisInfo, 2, 44100, 96, 96, 96); > > which by all reasons should generate a 96 kb/s stream, as all > max_bitrate, nominal_bitrate and min_bitrate are set to 96. Strangely > enough, the generated stream's bitrate (according to XMMS and WinAmp) > varies between 49 and 59. Currently min an...

..., you wrote: >Hi, > >It's a bit offtopic for this list, but you might be able to help. For >libvorbis rc3, what is the correct bitrate parametrization for the call >vorbis_encode_init()? > >For rc2, it worked calling it the following way: > >vorbis_encode_init( &vorbisInfo, > 2, // two channels > 44100, // 44.1kHz > -1, > 96000, // 96kb/s > -1 ); > >And this produced an Ogg Vorbis stream of about...

...____________________________ #!/usr/bin/env python '''An example of encoding using the Python wave module''' import ogg.vorbis, wave fout = open('out.ogg', 'wb') inwav = wave.open('in.wav','rb') channels = inwav.getnchannels() vd = ogg.vorbis.VorbisInfo(channels = channels, rate = inwav.getframerate(), quality = 0.2).analysis_init() os = ogg.OggStreamState(5) map(os.packetin, vd.headerout()) og = os.flush() while og: og.writeout(fout) og = os.flush() nsamples = 1024 eos = 0 total = 0 w...