ogg://

ogg:// — Audio streams

Beschreibung

Files opened for reading via the ogg:// wrapper are treated as compressed audio encoded using the OGG/Vorbis codec. Similarly, files opened for writing or appending via the ogg:// wrapper are writen as compressed audio data. stream_get_meta_data(), when used on an OGG/Vorbis file opened for reading will return various details about the stream including the vendor tag, any included comments, the number of channels, the sampling rate, and the encoding rate range described by: bitrate_lower, bitrate_upper, bitrate_nominal, and bitrate_window.

ogg:// PHP 4.3.0 and up (PECL)

Hinweis: This wrapper is not enabled by default
In order to use the ogg:// wrapper you must install the » OGG/Vorbis extension available from » PECL.

Optionen

ogg://soundfile.ogg
ogg:///path/to/soundfile.ogg
ogg://http://www.example.com/path/to/soundstream.ogg

Optionen

Wrapper Summary

Attribute Supported

Restricted by allow_url_fopen No

Allows Reading Yes

Allows Writing Yes

Allows Appending Yes

Allows Simultaneous Reading and Writing No

Supports stat() No

Supports unlink() No

Supports rename() No

Supports mkdir() No

Supports rmdir() No

**Wrapper Summary**
Attribute	Supported
Restricted by allow_url_fopen	No
Allows Reading	Yes
Allows Writing	Yes
Allows Appending	Yes
Allows Simultaneous Reading and Writing	No
Supports stat()	No
Supports unlink()	No
Supports rename()	No
Supports mkdir()	No
Supports rmdir()	No

Context options

Name Usage Default Mode

pcm_mode PCM encoding to apply while reading, one of: OGGVORBIS_PCM_U8, OGGVORBIS_PCM_S8, OGGVORBIS_PCM_U16_BE, OGGVORBIS_PCM_S16_BE, OGGVORBIS_PCM_U16_LE, and OGGVORBIS_PCM_S16_LE. (8 vs 16 bit, signed or unsigned, big or little endian) OGGVORBIS_PCM_S16_LE Read

rate Sampling rate of input data, expressed in Hz 44100 Write/Append

bitrate When given as an integer, the fixed bitrate at which to encode. (16000 to 131072) When given as a float, the variable bitrate quality to use. (-1.0 to 1.0) 128000 Write/Append

channels The number of audio channels to encode, typically 1 (Mono), or 2 (Stero). May range as high as 16. 2 Write/Append

comments An array of string values to encode into the track header. Write/Append

**Context options**
Name	Usage	Default	Mode
pcm_mode	PCM encoding to apply while reading, one of: `OGGVORBIS_PCM_U8`, `OGGVORBIS_PCM_S8`, `OGGVORBIS_PCM_U16_BE`, `OGGVORBIS_PCM_S16_BE`, `OGGVORBIS_PCM_U16_LE`, and `OGGVORBIS_PCM_S16_LE`. (8 vs 16 bit, signed or unsigned, big or little endian)	OGGVORBIS_PCM_S16_LE	Read
rate	Sampling rate of input data, expressed in Hz	44100	Write/Append
bitrate	When given as an integer, the fixed bitrate at which to encode. (16000 to 131072) When given as a float, the variable bitrate quality to use. (-1.0 to 1.0)	128000	Write/Append
channels	The number of audio channels to encode, typically 1 (Mono), or 2 (Stero). May range as high as 16.	2	Write/Append
comments	An array of string values to encode into the track header.		Write/Append

Beispiele

Ein BenutzerBeitrag:
- Beiträge aktualisieren...

martin dot leese at stanfordalumni dot org
18.02.2008 19:04


Note that although "ogg:" is the wrapper name, the stream is restricted to Ogg files containing a single stream encoded using the Vorbis audio codec.  An Ogg container can, in fact, contain multiple streams: audio, video, anything.  (Also, the audio streams in an Ogg contaner can use codecs such as FLAC and OggPCM.)  The wrapper name is therefore misleading.

Ein Service von Reinhard Neidl - Webprogrammierung.

ogg://

Beschreibung

Optionen

Optionen

Beispiele