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Questions tagged [vorbis]

Questions related to Vorbis audio compression standard. Vorbis is a free software / open source project headed by the Xiph.Org Foundation. The project produces an audio format specification and software implementation (codec) for lossy audio compression.

Vorbis is a free software / open source project headed by the Xiph.Org Foundation (formerly Xiphophorus company). The project produces an audio format specification and software implementation (codec) for lossy audio compression. Vorbis is most commonly used in conjunction with the Ogg container format and it is therefore often referred to as Ogg Vorbis.

More details at

  1. http://en.wikipedia.org/wiki/Vorbis
  2. http://www.vorbis.com/faq/
94 questions
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libvorbis audio decode from memory in C++

Given an encoded buffer in C++, what would be the steps using oggvorbis structs to decode the already in-memory data? OggVorbis_File cannot be used, because assets are within compressed archives. I'm trying to research the necessary structs and…
DubyaDubyaDubyaDot
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MAC OSX Intel LLVM Assembler bug (causes Vorbis OGG loader to crash)

I had mysterious bug in loading Vorbis Ogg files on Mac OSX. The first file is loaded correctly, the second crashes in some code that indicates the file is corrupted, the same happens even if I load the same exact file twice. After long hours of…
Auday
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3 answers

PCM Wave file - stereo to mono

I have an audio file which is stereo. Is converting it to mono just a case of skipping every other byte (after the header)? It's encoded in 16bit signed PCM format. I've got javax.sound.sampled available. Here's code I tried that didn't…
fredley
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ALSA buffer xrun induced by low quality source in ffmpeg capture

I am attempting to transfer some old Video 8 tapes to my computer, though an EasyCap USB stick and the motherboard's sound line-in, on Ubuntu. I believe the arguments are correctly laid out below to capture from two independent streams, and encode…
Peter Becich
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Audio Ogg Vorbis android default browser

I wonder what is the support of audio codecs in Android devices . Here I found that 2.3 and 4.0 support only mp3 codec: http://html5test.com/compare/browser/android23/android40/android22.html Although I tested android 2.3 on Galaxy S and I found…
Paul Brewczynski
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play ogg in Xcode projects

I am developing an application in Xcode that need the ogg and vorbis framework to play ogg files. I have googled for some information about this but i didn't get to any point, i dont know how to make this framework to work. I have already downloaded…
Xabier Arrabal
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Deinterleaving PCM (*.wav) stereo audio data

I understand that PCM data is stored as [left][right][left][right].... Am trying to convert a stereo PCM to mono Vorbis (*.ogg) which I understand is achievable by halving the left and the right channels ((left+right)*0.5). I have actually achieved…
MOHW
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How to play xiph.org audio codecs in iPhone/iOS?

I have music encoded in Vorbis format and also starded encoding some of my albums to the new Opus format. Is there a way I can copy and play them to my iPhone ? xiph.org wiki page states about vorbis support, that in the free software side, it's…
hdante
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How to lossless concatenate ogg vorbis files?

I'm trying to concatenate multiple ogg vorbis files into one. I know that theoretically it should be enough to do: cat 1.ogg 2.ogg > combined.ogg But this has disadvantages: not all players support files created like this (gstreamer doesn't) the…
josch
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Converting mp4 audio to webm with ffmpeg - unable to find suitable output for webm

I have a custom heroku buildpack that is installing ffmpeg, libvorbis, etc. When I run ffmpeg I get the following output: FFmpeg version SVN-r0.5.9-4:0.5.9-0ubuntu0.10.04.3, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration:…
JDStraughan
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How to decode ogg audio file to raw audio data?

I have .ogg file and I want to decode it to raw audio data. I read documentation to libvorbis, but it's very brief and not clear. I don't understand it! What Should i use libvorbis or libogg? Or something else?
user2487382
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1 answer

Can't Stream Ogg From ffmpeg Through stdout

To get the the crux of it, why does the first command work, but the second command does not. They produce slightly differently sized files with different contents: ffmpeg -i test.wav -f ogg -acodec libvorbis test.a.ogg ffmpeg -i test.wav -f ogg…
dave mankoff
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Extract cover image from OGG file

I need to extract cover from OGG file. I'm tries to decode base64 string stored in METADATA_BLOCK_PICTURE tag, which I'm getting with following command: vorbiscomment -R -e 1.ogg Base64 decoding is working without errors, but resulting binary file…
Beer Brother
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How ogg radio streaming works?

Recently I tried to understand how ogg vorbis works inside, so I wrote simple encoder/decoder for ogg vorbis. And now I'm trying to understand how all internet ogg radiostations work. And the thing I do not understand: if you need to process all 3…
user2487382
4
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1 answer

Using Vorbis and NAudio to play OGG files

I'm trying to play OGG file stream with NVorbis and NAudio, as described in the documention i'm trying to access VorbisWaveReader class, without success, here is my code: using System; using System.Collections.Generic; using System.Text; using…
Shai Katz
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