Recent questions tagged avfoundation

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avfoundation - Determine the corners of a sheet of paper with iOS 5 AV Foundation and core-image in realtime

I am currently building a camera app prototype which should recognize sheets of paper lying on a table. The ... Any help would be appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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382 views

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avfoundation - How to convert AudioBufferList to CMSampleBuffer?

I have an AudioTapProcessor attached to AVPlayerItem. which will call static void tap_ProcessCallback(MTAudioProcessingTapRef tap, ... ") } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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avfoundation - iOS AVAudioSession interruption notification not working as expected

I want to know when my AVAudioRecorder is inaccessible (e.g when music starts playing). As ... is in the foreground? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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avfoundation - iOS AVAudioSession interruption notification not working as expected

I want to know when my AVAudioRecorder is inaccessible (e.g when music starts playing). As ... is in the foreground? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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517 views

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avfoundation - Making CIContext.render(CIImage, CVPixelBuffer) work with AVAssetWriter

I want to use Core Image for processing a bunch of CGImage objects and turning them into a QuickTime movie ... official documentation on this. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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329 views

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avfoundation - Implementing long running tasks in background IOS

I have been working on an app in which user can record video using AVFoundation and send to the server, video ... the video on the main thread? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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637 views

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avfoundation - How to add external WebVTT subtitles into HTTP Live Stream on iOS client

We have videos encoded via bitmovin.com and provided as HTTP Live Streams (Fairplay HLS), but subtitles although in ... .player?.play() } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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445 views

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avfoundation - How to overlay one video on another in iOS?

I am trying to crop an already taken video into a circle in iOS. How might I go about doing this. I ... transparent background as well. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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568 views

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avfoundation - Subtitles for AVPlayer/MPMoviePlayerController

I am using m3u8 video format for streaming the video and now I need to display subtitles for the same. ... ? Any help is appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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356 views

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avfoundation - compressing a video in iOS

I've looked at this question and this question, neither have been able to help. I have tried the following: - ... What am I doing wrong exactly? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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