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avassetwriter - Audio (`AVAssetWriterInput ...
https://stackoverflow.com/questions/66845463/audio-avassetwriterinput-avaudiorecorder-optimal-settings
I'm currently building an app with video and audio recording (foreground and background). There are some reports from my clients that some of the recordings are failing, now I've checked with their...
Apple Developer Documentation
https://developer.apple.com/documentation/avfoundation/avassetwriterinput
class AVAssetWriterInput: NSObject. Overview. Create an asset writer input to write a single track of media, and optional track-level metadata, to the output file. ... An object that builds audio and video output settings dictionaries. class AVAsset Writer. An object that writes media data to …
Apple Developer Documentation
https://developer.apple.com/documentation/avfoundation/avassetwriterinput/1385912-initwithmediatype
The system doesn’t support specifying a value for AVSample Rate Converter Audio Quality Key in audio output settings. Configuring Video Settings. A video output settings dictionary must request a compressed video format, which means that the value you specify must follow the rules for compressed video output.
Apple Developer Documentation
https://developer.apple.com/documentation/avfoundation/avassetwriterinput/1449091-assetwriterinputwithmediatype
The input uses the source format hint to fill in missing output settings. If you specify a hint, you only need to specify AVFormatIDKey for the audio output settings, and AVVideoCodecKey is the only required key for video output settings. The system raises an error if the format description isn’t valid for the indicated media type. Return Value
Writing video and audio via AVAsse… | Apple Developer …
https://developer.apple.com/forums/thread/3655
A. The working file ie. video only no audio, written via my application using AVFoundation. B. The broken file ie video and audio, written via my applpication using AVFoundation. C. A working file created with FinalCutPro (legacy) and exported using …
[Swift] Using AVAssetWriter to compress video ... - Medium
https://medium.com/samkirkiles/swift-using-avassetwriter-to-compress-video-files-for-network-transfer-4dcc7b4288c5
AVAssetWriter — Writes an audio or video file at a specified destination on the devices filesystem while giving us complete control over the asset’s settings such as size, file type, color grading,...
Why is my AVAssetWriterInput faili… | Apple Developer Forums
https://developer.apple.com/forums/thread/683994
*** -[AVAssetWriterInput appendSampleBuffer:] Cannot append sample buffer: Input buffer must be in an uncompressed format when outputSettings is not nil. You're reading from a compressed file, so the incoming sample buffers contain compressed data, and you cannot pass those directly to an asset writer that's re-compressing.
Recording video with AVAssetWriter · GitHub
https://gist.github.com/yusuke024/b5cd3909d9d7f9e919291491f6b381f0
let input = AVAssetWriterInput (mediaType: . video, outputSettings: settings) // [AVVideoCodecKey: AVVideoCodecType.h264, AVVideoWidthKey: 1920, AVVideoHeightKey: 1080]) input. mediaTimeScale = CMTimeScale ( bitPattern : 600 )
How can I reduce the file size of a video created with ...
https://newbedev.com/how-can-i-reduce-the-file-size-of-a-video-created-with-uiimagepickercontroller
With AVCaptureSession and AVAssetWriter you can set the compression settings as such: NSDictionary *settings = @ {AVVideoCodecKey:AVVideoCodecH264, AVVideoWidthKey:@ (video_width), AVVideoHeightKey:@ (video_height), AVVideoCompressionPropertiesKey: @ {AVVideoAverageBitRateKey:@ (desired_bitrate), …
AVOutputSettingsAssistant Class (AVFoundation) | Microsoft ...
https://docs.microsoft.com/en-us/dotnet/api/avfoundation.avoutputsettingsassistant
Use any of the static Preset properties in this class to access the defaults, and then one of the instance properties to get the audio and video settings. // // Get the 640x480 audio settings // var audioSettings = AVOutputSettingsAssistant.Preset640x80.AudioSettings;
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