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JMF媒体格式(1)
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JMF介绍
JMF的全称是Java Media Framework API,她可以帮助开发者把音频、视频和其他一些基于时间的媒体放到Java应用程序或applet小程序中去，为多媒体开发者提供了捕捉、回放、编解码等工具，是一个弹性的、跨平台的多媒体解决方案。
http://java.sun.com/javase/technologies/desktop/media/jmf/reference/docs/index.html
JMF 2.1.1 - Supported Formats
http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/formats.html
JMF 2.1.1支持的媒体格式
JMF支持音频采样率从8KHz到48KHz，而跨平台的版本只支持以下几种采样率:
8,11.025,11.127,16,22.05,22.254,32,44.1和48KHz.
JMF 2.1.1各个实现版本中对媒体类型的支持：
下表中
D表示媒体可以被解码和呈现.
E表示媒体流可以被编码
read表示媒体类型可以作为输入
write表示媒体类型可以作为输出 （写入文件）
媒体类型 | JMF 2.1.1
跨平台版本 | JMF 2.1.1
Solaris/Linux Performance Pack | JMF 2.1.1
Windows Performance Pack |
|---|
AIFF (.aiff) | read/write | read/write | read/write |
8-bit mono/stereo linear | D,E | D,E | D,E |
16-bit mono/stereo linear | D,E | D,E | D,E |
G.711 (U-law) | D,E | D,E | D,E |
A-law | D | D | D |
IMA4 ADPCM | D,E | D,E | D,E |
AVI (.avi) | read/write | read/write | read/write |
Audio: 8-bit mono/stereo linear | D,E | D,E | D,E |
Audio: 16-bit mono/stereo linear | D,E | D,E | D,E |
Audio: DVI ADPCM compressed | D,E | D,E | D,E |
Audio: G.711 (U-law) | D,E | D,E | D,E |
Audio: A-law | D | D | D |
Audio: GSM mono | D,E | D,E | D,E |
Audio: ACM** | - | - | D,E |
Video: Cinepak | D | D,E | D |
Video: MJPEG (422) | D | D,E | D,E |
Video: RGB | D,E | D,E | D,E |
Video: YUV | D,E | D,E | D,E |
Video: VCM** | - | - | D,E |
GSM (.gsm) | read/write | read/write | read/write |
GSM mono audio | D,E | D,E | D,E |
HotMedia (.mvr) | read only | read only | read only |
IBM HotMedia | D | D | D |
MIDI (.mid) | read only | read only | read only |
Type 1 & 2 MIDI | - | D | D |
MPEG-1 Video (.mpg) | - | read only | read only |
Multiplexed System stream | - | D | D |
Video-only stream | - | D | D |
MPEG Layer II Audio (.mp2) | read only | read/write | read/write |
MPEG layer 1, 2 audio | D | D,E | D,E |
QuickTime (.mov) | read/write | read/write | read/write |
Audio: 8 bits mono/stereo linear | D,E | D,E | D,E |
Audio: 16 bits mono/stereo linear | D,E | D,E | D,E |
Audio: G.711 (U-law) | D,E | D,E | D,E |
Audio: A-law | D | D | D |
Audio: GSM mono | D,E | D,E | D,E |
Audio: IMA4 ADPCM | D,E | D,E | D,E |
Video: Cinepak | D | D,E | D |
Video: H.261 | - | D | D |
Video: H.263 | D | D,E | D,E |
Video: JPEG (420, 422, 444) | D | D,E | D,E |
Video: RGB | D,E | D,E | D,E |
Sun Audio (.au) | read/write | read/write | read/write |
8 bits mono/stereo linear | D,E | D,E | D,E |
16 bits mono/stereo linear | D,E | D,E | D,E |
G.711 (U-law) | D,E | D,E | D,E |
A-law | D | D | D |
Wave (.wav) | read/write | read/write | read/write |
8-bit mono/stereo linear | D,E | D,E | D,E |
16-bit mono/stereo linear | D,E | D,E | D,E |
G.711 (U-law) | D,E | D,E | D,E |
A-law | D | D | D |
GSM mono | D,E | D,E | D,E |
DVI ADPCM | D,E | D,E | D,E |
MS ADPCM | D | D | D |
ACM** | - | - | D,E |
Notes:
ACM** - Window's Audio Compression Manager support. Tested for these formats: A-law, GSM610, MSNAudio, MSADPCM, Truespeech, mp3, PCM, Voxware AC8, Voxware AC10.
VCM** - Window's Video Compression Manager support. Tested for these formats: IV41, IV51, VGPX, WINX, YV12, I263, CRAM, MPG4.
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