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2014/10/15 ¤U¤È 10:09:56
iphone Programming Glossary: h.264HTTP Live Streaming, FFMPEG & FFSERVER, and iPhone OS 3 http://stackoverflow.com/questions/1093667/http-live-streaming-ffmpeg-ffserver-and-iphone-os-3 10 test test.m3u8 http example.com path to your files i.e. Bring an input file or stream into ffmpeg and pipe an H.264 video with MP3 audio into Apple's segmenter. The segmenter spits out segmented video files and M3U playlists pointing to..
Video file formats supported in iPhone http://stackoverflow.com/questions/1535836/video-file-formats-supported-in-iphone 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.. 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 48kHz stereo audio in .m4v .mp4 and .mov file formats H.264 video up to.. of the H.264 Baseline Profile with AAC LC audio up to 160 Kbps 48kHz 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..
MPMoviePlayerController & .m3u8 playlist http://stackoverflow.com/questions/1665151/mpmovieplayercontroller-m3u8-playlist muxed audio and video despite 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..
Upload live streaming video from iPhone like Ustream or Qik http://stackoverflow.com/questions/1960782/upload-live-streaming-video-from-iphone-like-ustream-or-qik
What video formats are compatible with the assets library? http://stackoverflow.com/questions/3257224/what-video-formats-are-compatible-with-the-assets-library videos of various sizes as requested in this question. iPhone iPhone iPad non Retina Retina 6119419764_orig.mov H.264 1 920 x 1 080 NO NO NO Linear PCM 16 bit little endian signed integer 48000 Hz Stereo L R 35.33 Mbit s 6119419764_hd.mp4.. AVC Coding 568 x 320 YES YES YES AAC 32000 Hz Mono 775.14 kbit s 6121206003_orig.mov Taken with iPhone 3Gs H.264 480 x 360 YES YES YES AAC 44100 Hz Mono 865.94 kbit s 30 fps 6110638568_reformat.mov H.264 640 x 360 YES YES YES AAC 44100.. Taken with iPhone 3Gs H.264 480 x 360 YES YES YES AAC 44100 Hz Mono 865.94 kbit s 30 fps 6110638568_reformat.mov H.264 640 x 360 YES YES YES AAC 44100 Hz Mono 3.57 Mbit s Based on this limited testing for a given format and device it looks..
What's the best way of live streaming iphone camera to a media server? http://stackoverflow.com/questions/4474871/whats-the-best-way-of-live-streaming-iphone-camera-to-a-media-server post a user suggest setting up the callback to deliver encoded frames. As far as I am aware this is not possible for H.264 streams. The capture delegate will deliver images encoded in a specific pixel format. It is the Movie Writers and AVAssetWriter..
How do I stream video and play it? http://stackoverflow.com/questions/464732/how-do-i-stream-video-and-play-it for iPhone or a native application In the first case your only option is to transcode your video files to Quicktime H.264 m4v or mp4 extension . You can use Quicktime Pro use the export menu or VLC as a free alternative . Then simply add a hyperlink..
Can use AVCaptureVideoDataOutput and AVCaptureMovieFileOutput at the same time? http://stackoverflow.com/questions/4944083/can-use-avcapturevideodataoutput-and-avcapturemoviefileoutput-at-the-same-time into my own code AVAssetWriter AVAssetWriterInput and AVAssetWriterInputPixelBufferAdaptor to write frames out to an H.264 encoded movie file That's without investigating audio. I end up getting CMSampleBuffers from the capture session and then.. format with me as the delegate and a suitable dispatch queue affixed. to prepare for output I'll output 640x480 in H.264 via an asset writer NSDictionary outputSettings NSDictionary dictionaryWithObjectsAndKeys NSNumber numberWithInt 640 AVVideoWidthKey.. going to go somewhere I imagine you've got the URL for that sorted so create a suitable asset writer we'll put our H.264 within the normal MPEG4 container AVAssetWriter assetWriter AVAssetWriter alloc initWithURL URLFromSomwhere fileType..
Uploading live streaming video from iPhone [duplicate] http://stackoverflow.com/questions/5062266/uploading-live-streaming-video-from-iphone
Realtime Audio/Video Streaming FROM iPhone to another device (Browser, or iPhone) http://stackoverflow.com/questions/5719538/realtime-audio-video-streaming-from-iphone-to-another-device-browser-or-iphone to encode the video and stream it to a server most likely over a standard streaming format RTSP RTMP . There is an H.264 encoder chip on the iPhone 3GS. The problem is that it is not stream oriented. That is it outputs the metadata required.. the raw data and use FFmpeg to encode on the phone will use a ton of CPU and battery . Write your own parser for the H.264 AAC output very hard Record and process in chunks will add latency equal to the length of the chunks and drop around 1 4..
http://stackoverflow.com/questions/6691147/h-264-over-rtp-rtsp-iphone over RTP RTSP iPhone Is it possible to view video stream H.264 live feed over RTP RTSP in iPhone natively If not is it.. over RTP RTSP iPhone Is it possible to view video stream H.264 live feed over RTP RTSP in iPhone natively If not is it possible to write an application for this purpose iphone ios h.264..
iPhone headphone jack - read in data? http://stackoverflow.com/questions/7192473/iphone-headphone-jack-read-in-data for the audio input using the FFT library to demodulate QAM audio modulated video back into digital video like H.264 probably at 1 4 VGA resolution. NTSC Composite video is already QAM but at a much higher bandwidth about 5 MHz. If you search..
Hardware accelerated h.264 decoding to texture, overlay or similar in iOS http://stackoverflow.com/questions/10646657/hardware-accelerated-h-264-decoding-to-texture-overlay-or-similar-in-ios accelerated h.264 decoding to texture overlay or similar in iOS Is it possible and supported to use the iOS hardware accelerated h.264 decoding.. h.264 decoding to texture overlay or similar in iOS Is it possible and supported to use the iOS hardware accelerated h.264 decoding API to decode a local not streamed video file and then compose other objects on top of it I would like to make.. in here was mistaken feel free to delete or downvote this question to your heart's contempt. iphone ios opengl es h.264 share improve this question Yes you can do this and I think your question was specific enough to belong here. You're..
using ffmpeg to display video on iPhone http://stackoverflow.com/questions/17606933/using-ffmpeg-to-display-video-on-iphone comes to iOS apps. Second performance will be very very poor. Third iOS already includes APIs that have access to the h.264 hardware on the device. You can find my example Xcode project at AVDecodeEncode this is an example of using my library to..
Select videos using UIImagePickerController in 2G/3G http://stackoverflow.com/questions/2758466/select-videos-using-uiimagepickercontroller-in-2g-3g being picked the raw video recorder files are very big and the 2G 3G models not being able to hardware encode decode h.264 they left it out of the UIImagePickerController API. That is unfortunate as we all would love to pick videos on those devices..
iPhone “cannot play” .mp4 H.264 video file http://stackoverflow.com/questions/3285529/iphone-cannot-play-mp4-h-264-video-file on the link iPhone says Movie cannot be played. and doesn't tell me why. Any help Thanks in advance. iphone video h.264 mp4 share improve this question I figured this out finally. The problem was partially to do with encoding but more to..
iPhone Smooth Transition from One Video To Another http://stackoverflow.com/questions/3410003/iphone-smooth-transition-from-one-video-to-another Steve the short answer is that you are not going to be able to get the kind of results you want using AVPlayer. The h.264 video logic included in iOS is really great at playing video and video audio together but it really sucks at starting stopping.. clip to another. The reason is that there is a lot of buffering that needs to happen to load up and start playing a h.264 video in hardware. Basically you need to roll your own code that sets UIImage CGImageRef for your views in a way that makes..
What h.264 format loads on android AND IOS? http://stackoverflow.com/questions/6364190/what-h-264-format-loads-on-android-and-ios h.264 format loads on android AND IOS Theoretically both IOS and ANDROID will play h.264 files but I can't figure out a setting.. h.264 format loads on android AND IOS Theoretically both IOS and ANDROID will play h.264 files but I can't figure out a setting to encode them so they actually work cross platform. Does anybody know how to encode.. want to encode and host a new video for every device that comes down the pike. iphone android ffmpeg html5 video h.264 share improve this question Here's the ffmpeg command line we use to transcode to MPEG 4 h.264 in our production environment...
http://stackoverflow.com/questions/6691147/h-264-over-rtp-rtsp-iphone live feed over RTP RTSP in iPhone natively If not is it possible to write an application for this purpose iphone ios h.264 rtp share improve this question Sure it is possible in fact others have done it already see e.g. IPVision from TTrix..
iPhone - Separating audio from a video file and saving it to a separate file http://stackoverflow.com/questions/7042120/iphone-separating-audio-from-a-video-file-and-saving-it-to-a-separate-file and saving it to a separate file Does anyone know if it is possible to separate the audio from a video file such as h.264 encode mpeg or other such formats and than save that audio data to a separate file such as an mp3 file This relates to the..
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