ios 几种格式录音大小
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Here are the results for few encoding supported by iPhone. Size of audio file in KB of duration 10 sec.
kAudioFormatMPEG4AAC : 164,
kAudioFormatAppleLossles
kAudioFormatAppleIMA4 : 475,
kAudioFormatULaw : 889,
kAudioFormatALaw : 889,
Among these
iOs系统支持视频音频格式
iOs系统支持视频格式及编码要求:
The video technologies in iOS support the playback of movie files with the .mov, .mp4, .m4v, and .3gp filename extensions and using the following compression standards:
H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats
H.264 video, up to 768 Kbps, 320 by 240 pixels, 30 frames per second, Baseline Profile up to Level 1.3 with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats
MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats
iOs系统支持音频格式及编码要求:
AAC (16 至 320 Kbps)、Protected AAC (来自 iTunes Store)、MP3 (16 至 320 Kbps)、MP3 VBR、Audible (formats 2、3、4)、Apple Lossless、AIFF 及 WAV
The audio technologies in iOS support the following audio formats:
• AAC
• Apple Lossless (ALAC)
• A-law
• IMA/ADPCM (IMA4)
• Linear PCM
• µ-law
• DVI/Intel IMA ADPCM
• Microsoft GSM 6.10
• AES3-2003
H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats
H.264 video, up to 768 Kbps, 320 by 240 pixels, 30 frames per second, Baseline Profile up to Level 1.3 with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats
MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats
iOs系统支持音频格式及编码要求:
AAC (16 至 320 Kbps)、Protected AAC (来自 iTunes Store)、MP3 (16 至 320 Kbps)、MP3 VBR、Audible (formats 2、3、4)、Apple Lossless、AIFF 及 WAV
The audio technologies in iOS support the following audio formats:
• AAC
• Apple Lossless (ALAC)
• A-law
• IMA/ADPCM (IMA4)
• Linear PCM
• µ-law
• DVI/Intel IMA ADPCM
• Microsoft GSM 6.10
• AES3-2003
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