2014/10/15 下午 10:05:11

iphone Programming Glossary: codecs

playing a .caf file: works fine in simulator but not in iPhone

http://stackoverflow.com/questions/1363972/playing-a-caf-file-works-fine-in-simulator-but-not-in-iphone

iphone avaudioplayer caf share improve this question The iPhone OS on device does not have the same audio codecs available to it that the iPhone OS in simulator does. In my projects I have had problems playing back .caf files encoded..

iPhone - convert mp3 to wav?

http://stackoverflow.com/questions/1478030/iphone-convert-mp3-to-wav

conversion services and the convenient use of ExtAudioFiles. Also be sure to understand the difference between codecs and file formats and what codec format combinations are legal. I was surprised the first time I found out that PCM must..

MPMoviePlayerController & .m3u8 playlist

http://stackoverflow.com/questions/1665151/mpmovieplayercontroller-m3u8-playlist

the fact that the transport stream is part of the MPEG 2 spec the contents should be H.264 and AAC the audio and video codecs usually associated with MPEG 4 . You sometimes see other contents like .aac for audio only streams. A server will segment..

How can I record AMR audio format on the iPhone?

http://stackoverflow.com/questions/276644/how-can-i-record-amr-audio-format-on-the-iphone

of PCM AMR Format Sampling Frequency 8 kHz 13 bit 160 samples for 20 ms frames filtered to 200 3400 Hz eight source codecs 12.2 1.2 7.95 7.40 6.70 5.90 5.15 4.75 kbit s generated frame length 244 204 159 148 134 118 103 95 bits per frame format..

Encoding images to video with ffmpeg

http://stackoverflow.com/questions/3334939/encoding-images-to-video-with-ffmpeg

solution but its doesn't works the colors is not green but very strange so thats the code Register all formats and codecs av_register_all AVCodec codec AVCodecContext c NULL int i out_size size outbuf_size FILE f AVFrame picture uint8_t outbuf..

ExtAudioFileWrite to m4a/aac failing on dual-core devices (ipad 2, iphone 4s)

http://stackoverflow.com/questions/8719865/extaudiofilewrite-to-m4a-aac-failing-on-dual-core-devices-ipad-2-iphone-4s

UInt32 codecManf just before you set the client data format. This would lead me to believe that Apple's hardware codecs can only support very specific encoding but the software codecs can more reliably do what you want. In my case the software.. This would lead me to believe that Apple's hardware codecs can only support very specific encoding but the software codecs can more reliably do what you want. In my case the software codec translation to m4a takes 50 longer than writing the exact..