失眠网 > android 录音的格式 Android录制声音录音输输出格式

android 录音的格式 Android录制声音录音输输出格式

时间：2022-06-14 05:22:42

Table 1. Core media format and codec support.

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)

• MPEG-4 (.mp4, .m4a)

• ADTS raw AAC (.aac, decode in Android 3.1+, encode in Android 4.0+, ADIF not supported)

• MPEG-TS (.ts, not seekable, Android 3.0+)

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)

• RTTTL/RTX (.rtttl, .rtx)

• OTA (.ota)

• iMelody (.imy)

Vorbis

•

• Ogg (.ogg)

• Matroska (.mkv, Android 4.0+)

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)

WEBP

•

(Android 4.0+)

•

(Android 4.0+)

WebP (.webp)

Video

H.263

•

• 3GPP (.3gp)

• MPEG-4 (.mp4)

H.264 AVC

•

(Android 3.0+)

•

Baseline Profile (BP)

• 3GPP (.3gp)

• MPEG-4 (.mp4)

• MPEG-TS (.ts, AAC audio only, not seekable, Android 3.0+)

MPEG-4 SP

•

3GPP (.3gp)

VP8

•

(Android 2.3.3+)

Streamable only in Android 4.0 and above

• WebM (.webm)

• Matroska (.mkv, Android 4.0+)

Video Encoding Recommendations

Table 2, below, lists examples of video encoding profiles and parameters that the Android media framework supports for playback. In addition to these encoding parameter recommendations, a device’s availablevideo recording profiles can be used as a proxy for media playback capabilities. These profiles can be inspected using the[CamcorderProfile](/zqiang_55/reference/android/media/CamcorderProfile.html) class, which is available since API level 8.

Table 2. Examples of supported video encoding parameters.

SD (Low quality)

SD (High quality)

HD (Not available on all devices)

Video codec

H.264 Baseline Profile

Video resolution

176 x 144 px

480 x 360 px

1280 x 720 px

Video frame rate

12 fps