Android支援的媒體格式
Android支援的媒體格式
Android平臺支援的基本媒體格式列表如下表:
Type |
Format |
Encoder |
Decoder |
Details |
File Type(s) Supported |
Audio |
AAC LC/LTP |
X |
Mono/Stereo content in any combination of standard bit rates up to 160 kbps and sampling rates from 8 to 48kHz |
3GPP (.3gp) and MPEG-4 (.mp4, .m4a). No support for raw AAC (.aac) |
|
HE-AACv1 (AAC+) |
X |
||||
HE-AACv2 (enhanced AAC+) |
X |
||||
AMR-NB |
X |
X |
4.75 to 12.2 kbps sampled @ 8kHz |
3GPP (.3gp) |
|
AMR-WB |
X |
9 rates from 6.60 kbit/s to 23.85 kbit/s sampled @ 16kHz |
3GPP (.3gp) |
||
MP3 |
X |
Mono/Stereo 8-320Kbps constant (CBR) or variable bit-rate (VBR) |
MP3 (.mp3) |
||
MIDI |
X |
MIDI Type 0 and 1. DLS Version 1 and 2. XMF and Mobile XMF. Support for ringtone formats RTTTL/RTX, OTA, and iMelody |
Type 0 and 1 (.mid, .xmf, .mxmf). Also RTTTL/RTX (.rtttl, .rtx), OTA (.ota), and iMelody (.imy) |
||
Ogg Vorbis |
X |
Ogg (.ogg) |
|||
PCM/WAVE |
X |
8- and 16-bit linear PCM (rates up to limit of hardware) |
WAVE (.wav) |
||
Image |
JPEG |
X |
X |
Base+progressive |
JPEG (.jpg) |
GIF |
X |
GIF (.gif) |
|||
PNG |
X |
PNG (.png) |
|||
BMP |
X |
BMP (.bmp) |
|||
Video |
H.263 |
X |
X |
3GPP (.3gp) and MPEG-4 (.mp4) |
|
H.264 AVC |
X |
3GPP (.3gp) and MPEG-4 (.mp4) |
|||
MPEG-4 SP |
X |
3GPP (.3gp) |
除了上面列出的基本的媒體格式外,不同硬體的手機還可能具有自己特有的一些媒體格式的編解碼能力,這一點需要開發者留意。
T-Mobile G1 額外支援的媒體格式:
Type |
Format |
Encoder |
Decoder |
Comment |
File Type(s) Supported |
Audio |
WMA |
X |
Supports WMA standard L1-L3: ·L1: 64 kbps - 161 kbps @ 44.1kHz ·L2: <=161 kbps <=48 kHz ·L3: <385 kbps <=48 kHz Mono and stereo profiles with 16-bits per sample. Decoder does not support WMA Pro, Lossless, or Speech codecs. |
Windows Media Audio (.wma) |
|
Video |
WMV |
X |
Versions 7, 8 and 9. Simple profile only |
Windows Media Video (.wmv) |
|
H.264 AVC |
X |
On the G1, this decoder is limited to baseline profile up to 480x320, and 600 kbps average bitrate for the video stream. |
3GPP (.3gp) and MPEG-4 (.mp4) |
參考資料:
Android1.5SDK官方文件:android-sdk-windows-1.5_r3/docs/guide/appendix/media-formats.html