search for: bitrate_nomin

When I run ogginfo on a .ogg file I created with oggenc (RC3), it lists some things that I have questions about: 1. Ogginfo lists bitrate_average and bitrate_nominal. Now, bitrate_average (I assume) would mean the overall bitrate average for the entire file but what does bitrate_nominal mean? 2. How is the serial number created? Can I tell something specific about an .ogg file by looking at it? As a side note, a thank you to those developers working on Ogg...

...;ve simply taken the code and added a few headers). The command line equivalent for these tests would be: oggenc myfile.wav -b64 (or -b51, and so on) I set the nominal bitrate to 64 and start the encoding. I inspect the following variable, just after the above-mentioned line of code: vi.bitrate_nominal The value is 64000 as expected (ie 64 * 1000) If I now encode something else, with 51, the value for vi.bitrate_nominal is 50999, ie 1 less than expected. I could live with that if it was normal behaviour (though I expected it to be 51000), if it was not for the following: When I start ag...

...tions): http://www.geocities.com/mpxplay/oggenc.zip http://www.tar.hu/mpxplay/oggenc.zip http://www.extra.hu/galileog/oggenc.zip what's new or modified: - wav-header and wav-data-len handling - multichannel encoding - header update (after encoding) with an average bitrate value (into the vi.bitrate_nominal variable) - 64bit floating point precision (maybe you say that it is not important, but I'd like to compare with the 32bit verision) what's missing: - stream support (stdin/stdout) And I have a small request too: If somebody has a little time, please make an executable from this sour...

...lasses and want to verify that my data of the Java app matches that of C app. I'm pretty tired so instead of babbling an explanation basiclly what I am looking for from the vorbis encoder_example.c: vorbis_info_init(&vi); ret=vorbis_encode_init_vbr(&vi,2,44100,.5); printf( "long bitrate_nominal = %ld", vi.bitrate_nominal ); printf( "long blocksizes[0] = %ld", vi.codec_setup.blocksizes[0] ); printf( "long blocksizes[1] = %ld", vi.codec_setup.blocksizes[1] ); printf( "int modes = %d", vi.codec_setup.modes ); ... ... I know this is more of a C syntax q...

Hi all, I've got a question on regarding how to find out the duration of an ogg vorbis file. Sorry if it should already be mentioned somewhere in the docs, but I couldn't find out how to do it the best way. So, I can read the [bitrate_nominal] field from the identification header (if it is set), find out the size of the audio data (by subtracting the size of the three headers from the length of the file stream), and get the duration of the file with duration = audio size / nominal bitrate. However, is this the right way to go? What c...

...lets this norteamericano get his fill of BBC Radio 1's Essential Mix. Unfortunately, saved streams aren't seekable. Running ogginfo on the stream data gives: erial=1626603590 header_integrity=pass vendor=Xiphophorus libVorbis I 20011231 version=0 channels=2 rate=44100 bitrate_upper=none bitrate_nominal=128031 bitrate_lower=none stream_integrity=fail stream_truncated=true header_integrity=fail Reported length varies; Winamp seems to think this is 6653:18 in length, while most tools think it has zero length. One would think that, seeing as the stream decodes nicely, it should be fairly simple t...

...lets this norteamericano get his fill of BBC Radio 1's Essential Mix. Unfortunately, saved streams aren't seekable. Running ogginfo on the stream data gives: erial=1626603590 header_integrity=pass vendor=Xiphophorus libVorbis I 20011231 version=0 channels=2 rate=44100 bitrate_upper=none bitrate_nominal=128031 bitrate_lower=none stream_integrity=fail stream_truncated=true header_integrity=fail Reported length varies; Winamp seems to think this is 6653:18 in length, while most tools think it has zero length. One would think that, seeing as the stream decodes nicely, it should be fairly simple t...

...ould it? There's no CPU specific optimisations yet, e.g. selecting 3dnow instructions for the latter. Does 129 and 124kbit look about right for a -b setting, does one get that kind of range? Here I'm missing that "encoding parameters" tag. Hehe. Both have: bitrate_upper=none bitrate_nominal=128031 bitrate_lower=none Thanks, Hugo --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No s...

...ldn't be trusted too much. Just for reference, I saved a streamed ogg and got this: --------------------------------- E:\>ogginfo radio4.ogg filename=radio4.ogg erial=1037942235 header_integrity=pass vendor=Xiphophorus libVorbis I 20011217 version=0 channels=2 rate=44100 bitrate_upper=none bitrate_nominal=96016 bitrate_lower=none stream_integrity=pass bitrate_average=65 length=182692.561270 playtime=3044:52 stream_truncated=true total_length=182692.561270 total_playtime=3044:52 <----------------- what winamp also thinks. E:\> ---------------------------------- Wh...

After accidentally ogginfo-ing a WAV file, I'm wondering if there's any reason I shouldn't commit my fix that breaks out of the current file test if header integrity fails. Is there any case where the header integrity will fail but there is still any useful information to get out of the stream? I don't think so... -- Kenneth Arnold <ken@arnoldnet.net> - "Know

...vi->codec_setup; 197 if(!ci)return(OV_EFAULT); 198 199 vi->version=oggpack_read(opb,32); 200 if(vi->version!=0)return(OV_EVERSION); 201 202 vi->channels=oggpack_read(opb,8); 203 vi->rate=oggpack_read(opb,32); 204 205 vi->bitrate_upper=oggpack_read(opb,32); 206 vi->bitrate_nominal=oggpack_read(opb,32); 207 vi->bitrate_lower=oggpack_read(opb,32); 208 209 ci->blocksizes[0]=1<<oggpack_read(opb,4); 210 ci->blocksizes[1]=1<<oggpack_read(opb,4); 211 212 if(vi->rate<1)goto err_out; 213 if(vi->channels<1)goto err_out; 214 if(ci->bloc...

...te: 132.944968 kbps Logical stream 1 ended Warning: Hole in data found at approximate offset 3530268 bytes. Corrupted ogg. <p>---------- ogginfo rc3 erial=715851111 header_integrity=pass <snip> vendor=Xiphophorus libVorbis I 20010813 version=0 channels=2 rate=44100 bitrate_upper=none bitrate_nominal=128000 bitrate_lower=none stream_integrity=pass bitrate_average=132758 length=212.240000 playtime=3:32 stream_truncated=false total_length=212.240000 total_playtime=3:32 ----------------- What could cause this? (Other than physical data loss.) This file never went anywhere. Ripped with grip, d...

Hello folks I am encoding music to ogg vorbis format for the first time. From what i have researched, ogg vorbis is natively a vbr format. Also encoding using the -q switch is encouraged instead of specifying a bitrate through -b. Now, while encoding using -b i get this: Encoding "file.wav" to "file.ogg" at approximate bitrate 224 kbps (VBR encoding enabled) Notice

Just got around to compiling RC3 under beos and came across an anomaly when using managed bitrates. I haven't changed the code for the beos encoder but I now get double the bitrates so vorbis_encode_init(&vi,mediaFormat.u.raw_audio.channel_count,(long)mediaFormat.u.raw_audio.frame_rate , -1, 128000, -1); now gives me vorbis files that average around 325 - 350. Is this now the correct

I've been implementing Ogg FLAC support in an editor I'm working on, and I must admit to being frustrated by the lack of support for the codec on the Ogg layer... and this is more than lacking granulepos. The codec's I've worked with, and my own (Writ), use Page 0 for general information about the codec. Specifically, the samplerate, bitrate, quality, number of channels, all