android支持的codec一览

虽然各个机型都对多媒体的支持做了定制，但是了解android平台默认支持的格式，可以让自己的多媒体应用做的更通用。本文主要对目前主流的android平台的支持情况做个介绍。

android默认支持的多媒体格式：集装箱运费

一.对网络多媒体的协议支持

主要由如下三种：

• RTSP (RTP, SDP)  实时的流媒体协议，主流的web应用应该都用的这个吧。
• HTTP 非完全的，支持部分流媒体播放发型123

• HTTP live streaming draft protocol (Android 3.0 以上)

二.主流平台中支持的多媒体格式

Type	Format / Codec	Encoder	Decoder	Details	Supported File Type(s) / Container Formats
Audio	AAC LC/LTP	•	•	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). ADTS raw AAC (.aac, decode only, ADIF not supported, Android 3.1+).
	HE-AACv1 (AAC+)		•
	HE-AACv2 (enhanced AAC+)		•
	AMR-NB	•	•	4.75 to 12.2 kbps sampled @ 8kHz	3GPP (.3gp)
	AMR-WB	•	•	9 rates from 6.60 kbit/s to 23.85 kbit/s sampled @ 16kHz	3GPP (.3gp)
	FLAC		• (Android 3.1+)	Mono/Stereo (no multichannel). Sample rates up to 48 kHz (but up to 44.1 kHz is recommended on devices with 44.1 kHz output, as the 48 to 44.1 kHz downsampler does not include a low-pass filter). 16-bit recommended; no dither applied for 24-bit.	FLAC (.flac) only
	MP3		•	Mono/Stereo 8-320Kbps constant (CBR) or variable bit-rate (VBR)	MP3 (.mp3)
	MIDI		•	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		•		Ogg (.ogg)
	PCM/WAVE		•	8- and 16-bit linear PCM (rates up to limit of hardware)	WAVE (.wav)
Image	JPEG	•	•	Base+progressive	JPEG (.jpg)
	GIF		•		GIF (.gif)
	PNG	•	•		PNG (.png)
	BMP		•		BMP (.bmp)
Video	H.263	•	•		3GPP (.3gp) and MPEG-4 (.mp4)
	H.264 AVC	• (Android 3.0+)	•	Baseline Profile (BP)	3GPP (.3gp) and MPEG-4 (.mp4). MPEG-TS (.ts, AAC audio only, not seekable, Android 3.0+)
	MPEG-4 SP		•		3GPP (.3gp)
	VP8		• (Android 2.3.3+)		WebM (.webm)

对于手机版的Web应用可以考虑采用H.264的codec