Добавьте закругленные углы + прозрачный фон из импортированного видео (.mp4) в экспортированное видео (.mov) в Swift.

Добавьте закругленные углы + прозрачный фон из импортированного видео (.mp4) в экспортированное видео (.mov) в Swift. ⇐ IOS

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Anonymous

Добавьте закругленные углы + прозрачный фон из импортированного видео (.mp4) в экспортированное видео (.mov) в Swift.

Цитата

Сообщение Anonymous » 02 мар 2024, 15:19

Problem

I have a .mp4 file in which I want to add rounded corners and make the background (behind the rounded corners) transparant. I got two issues with my current code:

For some reason, the CALayer I apply with the rounded corners, remains black, despite setting the backgroundColor to clear. Adding a large borderWidth helps, but I am curious if there is a better alternative. Link to code: https://github.com/Jasperav/VideoWithRo ... swift#L277
The background of the rounded corners is black, not transparant. How to make it transparant?

This is an example of the output video when having a borderWidth of 50 on the CALayer property maskLayer (having no borderWidth makes the entire video black):

Setting the borderWidth to greatestFiniteMagnitude fixes the problem, but it's ugly.

I also do not know how to make the edges transparant instead of black.

Reproduction

To reproduce the problem fairly easy, I created this repo with a single test. Running that test will create the .mov file with the problems described above. Below is the code as well.

Repo (just run the test, check the logging for output and play the video): https://github.com/Jasperav/VideoWithRo ... rnersTests

Code (VideoEditor.swift):
import AVFoundation import Foundation import Photos import AppKit import QuartzCore import OSLog let logger = Logger() class VideoEditor { func export( url: URL, outputDir: URL, size: CGSize ) async -> String? { do { let (asset, video) = try await resizeVideo(videoAsset: AVURLAsset(url: url), targetSize: size, isKeepAspectRatio: false, isCutBlackEdge: false) try await exportVideo(outputPath: outputDir, asset: asset, videoComposition: video) return nil } catch let error as YGCVideoError { switch error { case .videoFileNotFind: return NSLocalizedString("video_error_video_file_not_found", comment: "") case .videoTrackNotFind: return NSLocalizedString("video_error_no_video_track", comment: "") case .audioTrackNotFind: return NSLocalizedString("video_error_no_audio_track", comment: "") case .compositionTrackInitFailed: return NSLocalizedString("video_error_could_not_create_composition_track", comment: "") case .targetSizeNotCorrect: return NSLocalizedString("video_error_wrong_size", comment: "") case .timeSetNotCorrect: return NSLocalizedString("video_error_wrong_time", comment: "") case .noDir: return NSLocalizedString("video_error_no_dir", comment: "") case .noExportSession: return NSLocalizedString("video_error_no_export_session", comment: "") case .exporterError(let exporterError): return String.localizedStringWithFormat(NSLocalizedString("video_error_exporter_error", comment: ""), exporterError) } } catch { assertionFailure() return error.localizedDescription } } private enum YGCVideoError: Error { case videoFileNotFind case videoTrackNotFind case audioTrackNotFind case compositionTrackInitFailed case targetSizeNotCorrect case timeSetNotCorrect case noDir case noExportSession case exporterError(String) } private enum YGCTimeRange { case naturalRange case secondsRange(Double, Double) case cmtimeRange(CMTime, CMTime) func validateTime(videoTime: CMTime) -> Bool { switch self { case .naturalRange: return true case let .secondsRange(begin, end): let seconds = CMTimeGetSeconds(videoTime) if end > begin, begin >= 0, end < seconds { return true } else { return false } case let .cmtimeRange(_, end): if CMTimeCompare(end, videoTime) == 1 { return false } else { return true } } } } private enum Way { case right, left, up, down } private func orientationFromTransform(transform: CGAffineTransform) -> (orientation: Way, isPortrait: Bool) { var assetOrientation = Way.up var isPortrait = false if transform.a == 0, transform.b == 1.0, transform.c == -1.0, transform.d == 0 { assetOrientation = .right isPortrait = true } else if transform.a == 0, transform.b == -1.0, transform.c == 1.0, transform.d == 0 { assetOrientation = .left isPortrait = true } else if transform.a == 1.0, transform.b == 0, transform.c == 0, transform.d == 1.0 { assetOrientation = .up } else if transform.a == -1.0, transform.b == 0, transform.c == 0, transform.d == -1.0 { assetOrientation = .down } return (assetOrientation, isPortrait) } private func videoCompositionInstructionForTrack(track: AVCompositionTrack, videoTrack: AVAssetTrack, targetSize: CGSize) async throws -> AVMutableVideoCompositionLayerInstruction { let instruction = AVMutableVideoCompositionLayerInstruction(assetTrack: track) let transform = try await videoTrack.load(.preferredTransform) let naturalSize = try await videoTrack.load(.naturalSize) let assetInfo = orientationFromTransform(transform: transform) var scaleToFitRatio = targetSize.width / naturalSize.width if assetInfo.isPortrait { scaleToFitRatio = targetSize.width / naturalSize.height let scaleFactor = CGAffineTransform(scaleX: scaleToFitRatio, y: scaleToFitRatio) instruction.setTransform(transform.concatenating(scaleFactor), at: CMTime.zero) } else { let scaleFactor = CGAffineTransform(scaleX: scaleToFitRatio, y: scaleToFitRatio) var concat = transform.concatenating(scaleFactor).concatenating(CGAffineTransform(translationX: 0, y: targetSize.width / 2)) if assetInfo.orientation == .down { let fixUpsideDown = CGAffineTransform(rotationAngle: CGFloat.pi) let yFix = naturalSize.height + targetSize.height let centerFix = CGAffineTransform(translationX: naturalSize.width, y: yFix) concat = fixUpsideDown.concatenating(centerFix).concatenating(scaleFactor) } instruction.setTransform(concat, at: CMTime.zero) } return instruction } private func exportVideo(outputPath: URL, asset: AVAsset, videoComposition: AVMutableVideoComposition?) async throws { let fileExists = FileManager.default.fileExists(atPath: outputPath.path()) logger.debug("Output dir: \(outputPath), exists: \(fileExists)") if fileExists { do { try FileManager.default.removeItem(atPath: outputPath.path()) } catch { logger.error("remove file failed") } } let dir = outputPath.deletingLastPathComponent().path() logger.debug("Will try to create dir: \(dir)") try? FileManager.default.createDirectory(atPath: dir, withIntermediateDirectories: true) var isDirectory = ObjCBool(false) guard FileManager.default.fileExists(atPath: dir, isDirectory: &isDirectory), isDirectory.boolValue else { logger.error("Could not create dir, or dir is a file") throw YGCVideoError.noDir } guard let exporter = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetHighestQuality) else { logger.error("generate export failed") throw YGCVideoError.noExportSession } exporter.outputURL = outputPath exporter.outputFileType = .mov exporter.shouldOptimizeForNetworkUse = false if let composition = videoComposition { exporter.videoComposition = composition } await exporter.export() logger.debug("Status: \(String(describing: exporter.status)), error: \(exporter.error)") if exporter.status != .completed { throw YGCVideoError.exporterError(exporter.error?.localizedDescription ?? "NO SPECIFIC ERROR") } } private func resizeVideo(videoAsset: AVURLAsset, targetSize: CGSize, isKeepAspectRatio: Bool, isCutBlackEdge: Bool) async throws -> (AVMutableComposition, AVMutableVideoComposition) { guard let videoTrack = try await videoAsset.loadTracks(withMediaType: .video).first else { throw YGCVideoError.videoTrackNotFind } guard let audioTrack = try await videoAsset.loadTracks(withMediaType: .audio).first else { throw YGCVideoError.audioTrackNotFind } let resizeComposition = AVMutableComposition(urlAssetInitializationOptions: nil) guard let compositionVideoTrack = resizeComposition.addMutableTrack(withMediaType: AVMediaType.video, preferredTrackID: videoTrack.trackID) else { throw YGCVideoError.compositionTrackInitFailed } guard let compostiionAudioTrack = resizeComposition.addMutableTrack(withMediaType: AVMediaType.audio, preferredTrackID: audioTrack.trackID) else { throw YGCVideoError.compositionTrackInitFailed } let duration = try await videoAsset.load(.duration) try compositionVideoTrack.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: duration), of: videoTrack, at: CMTime.zero) try compostiionAudioTrack.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: duration), of: audioTrack, at: CMTime.zero) let originTransform = try await videoTrack.load(.preferredTransform) let info = orientationFromTransform(transform: originTransform) let naturalSize = try await videoTrack.load(.naturalSize) let videoNaturaSize: CGSize = if info.isPortrait, info.orientation != .up { CGSize(width: naturalSize.height, height: naturalSize.width) } else { naturalSize } if videoNaturaSize.width < targetSize.width, videoNaturaSize.height < targetSize.height { throw YGCVideoError.targetSizeNotCorrect } let fitRect: CGRect = if isKeepAspectRatio { AVMakeRect(aspectRatio: videoNaturaSize, insideRect: CGRect(origin: CGPoint.zero, size: targetSize)) } else { CGRect(origin: CGPoint.zero, size: targetSize) } let mainInstruction = AVMutableVideoCompositionInstruction() mainInstruction.timeRange = CMTimeRange(start: CMTime.zero, end: duration) let layerInstruction = AVMutableVideoCompositionLayerInstruction(assetTrack: videoTrack) let finalTransform: CGAffineTransform = if info.isPortrait { if isCutBlackEdge { originTransform.concatenating(CGAffineTransform(scaleX: fitRect.width / videoNaturaSize.width, y: fitRect.height / videoNaturaSize.height)) } else { originTransform.concatenating(CGAffineTransform(scaleX: fitRect.width / videoNaturaSize.width, y: fitRect.height / videoNaturaSize.height)).concatenating(CGAffineTransform(translationX: fitRect.minX, y: fitRect.minY)) } } else { if isCutBlackEdge { originTransform.concatenating(CGAffineTransform(scaleX: fitRect.width / videoNaturaSize.width, y: fitRect.height / videoNaturaSize.height)) } else { originTransform.concatenating(CGAffineTransform(scaleX: fitRect.width / videoNaturaSize.width, y: fitRect.height / videoNaturaSize.height)).concatenating(CGAffineTransform(translationX: fitRect.minX, y: fitRect.minY)) } } layerInstruction.setTransform(finalTransform, at: CMTime.zero) mainInstruction.layerInstructions = [layerInstruction] let videoComposition = AVMutableVideoComposition() videoComposition.frameDuration = CMTimeMake(value: 1, timescale: 30) let videoLayer = CALayer() videoLayer.frame = CGRect(x: 0, y: 0, width: targetSize.width, height: targetSize.height) videoLayer.backgroundColor = .clear let maskLayer = CALayer() maskLayer.frame = videoLayer.bounds maskLayer.cornerRadius = 100 maskLayer.masksToBounds = true maskLayer.borderWidth = 50 maskLayer.backgroundColor = .clear videoLayer.mask = maskLayer videoComposition.animationTool = AVVideoCompositionCoreAnimationTool(postProcessingAsVideoLayer: videoLayer, in: videoLayer) if isCutBlackEdge, isKeepAspectRatio { videoComposition.renderSize = fitRect.size } else { videoComposition.renderSize = targetSize } videoComposition.instructions = [mainInstruction] return (resizeComposition, videoComposition) } }

Источник: https://stackoverflow.com/questions/780 ... -to-export

1709381949

Anonymous


[b]Problem[/b]
 
I have a .mp4 file in which I want to add rounded corners and make the background (behind the rounded corners) transparant. I got two issues with my current code:
 [list] [*]For some reason, the CALayer I apply with the rounded corners, remains black, despite setting the backgroundColor to clear. Adding a large borderWidth helps, but I am curious if there is a better alternative. Link to code: https://github.com/Jasperav/VideoWithRoundedTransparantCorners/blob/fdc534a7a4541c58e04d48c1ed5c62fe9ad6e497/VideoWithRoundedTransparantCornersTests/VideoEditor.swift#L277 [*]The background of the rounded corners is black, not transparant. How to make it transparant? [/list] 
This is an example of the output video when having a borderWidth of 50 on the CALayer property maskLayer (having no borderWidth makes the entire video black):
 

[img]https://i.stack.imgur.com/S2iIIm.png[/img]

 
Setting the borderWidth to greatestFiniteMagnitude fixes the problem, but it's ugly.
 
I also do not know how to make the edges transparant instead of black.
 
[b]Reproduction[/b]
 
To reproduce the problem fairly easy, I created this repo with a single test. Running that test will create the .mov file with the problems described above.  Below is the code as well.
 
Repo (just run the test, check the logging for output and play the video): https://github.com/Jasperav/VideoWithRoundedTransparantCorners/tree/main/VideoWithRoundedTransparantCornersTests
 
Code (VideoEditor.swift):
 import AVFoundation import Foundation import Photos import AppKit import QuartzCore import OSLog let logger = Logger() class VideoEditor {     func export(         url: URL,         outputDir: URL,         size: CGSize     ) async -> String? {         do {             let (asset, video) = try await resizeVideo(videoAsset: AVURLAsset(url: url), targetSize: size, isKeepAspectRatio: false, isCutBlackEdge: false)                          try await exportVideo(outputPath: outputDir, asset: asset, videoComposition: video)             return nil         } catch let error as YGCVideoError {             switch error {             case .videoFileNotFind:                 return NSLocalizedString("video_error_video_file_not_found", comment: "")             case .videoTrackNotFind:                 return NSLocalizedString("video_error_no_video_track", comment: "")             case .audioTrackNotFind:                 return NSLocalizedString("video_error_no_audio_track", comment: "")             case .compositionTrackInitFailed:                 return NSLocalizedString("video_error_could_not_create_composition_track", comment: "")             case .targetSizeNotCorrect:                 return NSLocalizedString("video_error_wrong_size", comment: "")             case .timeSetNotCorrect:                 return NSLocalizedString("video_error_wrong_time", comment: "")             case .noDir:                 return NSLocalizedString("video_error_no_dir", comment: "")             case .noExportSession:                 return NSLocalizedString("video_error_no_export_session", comment: "")                 case .exporterError(let exporterError):                 return String.localizedStringWithFormat(NSLocalizedString("video_error_exporter_error", comment: ""), exporterError)             }         } catch {             assertionFailure()             return error.localizedDescription         }     }     private enum YGCVideoError: Error {         case videoFileNotFind         case videoTrackNotFind         case audioTrackNotFind         case compositionTrackInitFailed         case targetSizeNotCorrect         case timeSetNotCorrect         case noDir         case noExportSession         case exporterError(String)     }     private enum YGCTimeRange {         case naturalRange         case secondsRange(Double, Double)         case cmtimeRange(CMTime, CMTime)         func validateTime(videoTime: CMTime) -> Bool {             switch self {             case .naturalRange:                 return true             case let .secondsRange(begin, end):                 let seconds = CMTimeGetSeconds(videoTime)                 if end > begin, begin >= 0, end < seconds {                     return true                 } else {                     return false                 }             case let .cmtimeRange(_, end):                 if CMTimeCompare(end, videoTime) == 1 {                     return false                 } else {                     return true                 }             }         }     }     private enum Way {         case right, left, up, down     }     private func orientationFromTransform(transform: CGAffineTransform) -> (orientation: Way, isPortrait: Bool) {         var assetOrientation = Way.up         var isPortrait = false         if transform.a == 0, transform.b == 1.0, transform.c == -1.0, transform.d == 0 {             assetOrientation = .right             isPortrait = true         } else if transform.a == 0, transform.b == -1.0, transform.c == 1.0, transform.d == 0 {             assetOrientation = .left             isPortrait = true         } else if transform.a == 1.0, transform.b == 0, transform.c == 0, transform.d == 1.0 {             assetOrientation = .up         } else if transform.a == -1.0, transform.b == 0, transform.c == 0, transform.d == -1.0 {             assetOrientation = .down         }         return (assetOrientation, isPortrait)     }     private func videoCompositionInstructionForTrack(track: AVCompositionTrack, videoTrack: AVAssetTrack, targetSize: CGSize) async throws ->  AVMutableVideoCompositionLayerInstruction {         let instruction = AVMutableVideoCompositionLayerInstruction(assetTrack: track)         let transform = try await videoTrack.load(.preferredTransform)         let naturalSize = try await videoTrack.load(.naturalSize)         let assetInfo = orientationFromTransform(transform: transform)         var scaleToFitRatio = targetSize.width / naturalSize.width         if assetInfo.isPortrait {             scaleToFitRatio = targetSize.width / naturalSize.height             let scaleFactor = CGAffineTransform(scaleX: scaleToFitRatio, y: scaleToFitRatio)             instruction.setTransform(transform.concatenating(scaleFactor), at: CMTime.zero)         } else {             let scaleFactor = CGAffineTransform(scaleX: scaleToFitRatio, y: scaleToFitRatio)             var concat = transform.concatenating(scaleFactor).concatenating(CGAffineTransform(translationX: 0, y: targetSize.width / 2))             if assetInfo.orientation == .down {                 let fixUpsideDown = CGAffineTransform(rotationAngle: CGFloat.pi)                 let yFix = naturalSize.height + targetSize.height                 let centerFix = CGAffineTransform(translationX: naturalSize.width, y: yFix)                 concat = fixUpsideDown.concatenating(centerFix).concatenating(scaleFactor)             }             instruction.setTransform(concat, at: CMTime.zero)         }         return instruction     }     private func exportVideo(outputPath: URL, asset: AVAsset, videoComposition: AVMutableVideoComposition?) async throws {         let fileExists = FileManager.default.fileExists(atPath: outputPath.path())         logger.debug("Output dir: \(outputPath), exists: \(fileExists)")         if fileExists {             do {                 try FileManager.default.removeItem(atPath: outputPath.path())             } catch {                 logger.error("remove file failed")             }         }         let dir = outputPath.deletingLastPathComponent().path()         logger.debug("Will try to create dir: \(dir)")         try? FileManager.default.createDirectory(atPath: dir, withIntermediateDirectories: true)         var isDirectory = ObjCBool(false)         guard FileManager.default.fileExists(atPath: dir, isDirectory: &isDirectory), isDirectory.boolValue else {             logger.error("Could not create dir, or dir is a file")             throw YGCVideoError.noDir         }         guard let exporter = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetHighestQuality) else {             logger.error("generate export failed")             throw YGCVideoError.noExportSession         }         exporter.outputURL = outputPath         exporter.outputFileType = .mov         exporter.shouldOptimizeForNetworkUse = false         if let composition = videoComposition {             exporter.videoComposition = composition         }         await exporter.export()         logger.debug("Status: \(String(describing: exporter.status)), error: \(exporter.error)")         if exporter.status != .completed {             throw YGCVideoError.exporterError(exporter.error?.localizedDescription ?? "NO SPECIFIC ERROR")         }     }     private func resizeVideo(videoAsset: AVURLAsset,                              targetSize: CGSize,                              isKeepAspectRatio: Bool,                              isCutBlackEdge: Bool) async throws ->  (AVMutableComposition, AVMutableVideoComposition)     {         guard let videoTrack = try await videoAsset.loadTracks(withMediaType: .video).first else {             throw YGCVideoError.videoTrackNotFind         }         guard let audioTrack = try await videoAsset.loadTracks(withMediaType: .audio).first else {             throw YGCVideoError.audioTrackNotFind         }         let resizeComposition = AVMutableComposition(urlAssetInitializationOptions: nil)         guard let compositionVideoTrack = resizeComposition.addMutableTrack(withMediaType: AVMediaType.video, preferredTrackID: videoTrack.trackID) else {             throw YGCVideoError.compositionTrackInitFailed         }         guard let compostiionAudioTrack = resizeComposition.addMutableTrack(withMediaType: AVMediaType.audio, preferredTrackID: audioTrack.trackID) else {             throw YGCVideoError.compositionTrackInitFailed         }         let duration = try await videoAsset.load(.duration)         try compositionVideoTrack.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: duration), of: videoTrack, at: CMTime.zero)         try compostiionAudioTrack.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: duration), of: audioTrack, at: CMTime.zero)         let originTransform = try await videoTrack.load(.preferredTransform)         let info = orientationFromTransform(transform: originTransform)         let naturalSize = try await videoTrack.load(.naturalSize)         let videoNaturaSize: CGSize = if info.isPortrait, info.orientation != .up {             CGSize(width: naturalSize.height, height: naturalSize.width)         } else {             naturalSize         }         if videoNaturaSize.width < targetSize.width, videoNaturaSize.height < targetSize.height {             throw YGCVideoError.targetSizeNotCorrect         }         let fitRect: CGRect = if isKeepAspectRatio {             AVMakeRect(aspectRatio: videoNaturaSize, insideRect: CGRect(origin: CGPoint.zero, size: targetSize))         } else {             CGRect(origin: CGPoint.zero, size: targetSize)         }         let mainInstruction = AVMutableVideoCompositionInstruction()         mainInstruction.timeRange = CMTimeRange(start: CMTime.zero, end: duration)         let layerInstruction = AVMutableVideoCompositionLayerInstruction(assetTrack: videoTrack)         let finalTransform: CGAffineTransform = if info.isPortrait {             if isCutBlackEdge {                 originTransform.concatenating(CGAffineTransform(scaleX: fitRect.width / videoNaturaSize.width, y: fitRect.height / videoNaturaSize.height))             } else {                 originTransform.concatenating(CGAffineTransform(scaleX: fitRect.width / videoNaturaSize.width, y: fitRect.height / videoNaturaSize.height)).concatenating(CGAffineTransform(translationX: fitRect.minX, y: fitRect.minY))             }         } else {             if isCutBlackEdge {                 originTransform.concatenating(CGAffineTransform(scaleX: fitRect.width / videoNaturaSize.width, y: fitRect.height / videoNaturaSize.height))             } else {                 originTransform.concatenating(CGAffineTransform(scaleX: fitRect.width / videoNaturaSize.width, y: fitRect.height / videoNaturaSize.height)).concatenating(CGAffineTransform(translationX: fitRect.minX, y: fitRect.minY))             }         }         layerInstruction.setTransform(finalTransform, at: CMTime.zero)         mainInstruction.layerInstructions = [layerInstruction]         let videoComposition = AVMutableVideoComposition()                  videoComposition.frameDuration = CMTimeMake(value: 1, timescale: 30)                  let videoLayer = CALayer()                  videoLayer.frame = CGRect(x: 0, y: 0, width: targetSize.width, height: targetSize.height)         videoLayer.backgroundColor = .clear                  let maskLayer = CALayer()                  maskLayer.frame = videoLayer.bounds         maskLayer.cornerRadius = 100         maskLayer.masksToBounds = true         maskLayer.borderWidth = 50         maskLayer.backgroundColor = .clear         videoLayer.mask = maskLayer                  videoComposition.animationTool = AVVideoCompositionCoreAnimationTool(postProcessingAsVideoLayer: videoLayer, in: videoLayer)                  if isCutBlackEdge, isKeepAspectRatio {             videoComposition.renderSize = fitRect.size         } else {             videoComposition.renderSize = targetSize         }         videoComposition.instructions = [mainInstruction]         return (resizeComposition, videoComposition)     } }  

Источник: [url]https://stackoverflow.com/questions/78092637/add-rounded-corners-transparency-background-from-import-video-mp4-to-export[/url]

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Добавьте закругленные углы + прозрачный фон из импортированного видео (.mp4) в экспортированное видео (.mov) в Swift.

Последнее сообщение Anonymous « 02 мар 2024, 19:17
Добавлено в форуме IOS

Anonymous » 02 мар 2024, 19:17 » в форуме IOS

Problem

I have a .mp4 file in which I want to add rounded corners and make the background (behind the rounded corners) transparant. I got two issues with my current code:
For some reason, the CALayer I apply with the rounded corners makes the...

0 Ответы

77 Просмотры

Последнее сообщение Anonymous
02 мар 2024, 19:17
Добавьте закругленные углы + прозрачный фон из импортированного видео (.mp4) в экспортированное видео (.mov) в Swift.

Последнее сообщение Anonymous « 03 мар 2024, 14:46
Добавлено в форуме IOS

Anonymous » 03 мар 2024, 14:46 » в форуме IOS

Problem

I have a .mp4 file in which I want to add rounded corners and make the background (behind the rounded corners) transparant. I got two issues with my current code:
For some reason, the CALayer I apply with the rounded corners makes the...

0 Ответы

69 Просмотры

Последнее сообщение Anonymous
03 мар 2024, 14:46
Закругленные углы UILabel Swift

Последнее сообщение Anonymous « 18 дек 2024, 03:12
Добавлено в форуме IOS

Anonymous » 18 дек 2024, 03:12 » в форуме IOS

Я создаю UILabel программно. Но приведенный ниже фрагмент кода не дает мне закругленных углов. Я думаю, что упускаю что-то очень важное.

var textLabel:UILabel? = UILabel()
textLabel?.text = text
textLabel?.frame = CGRect(x:point.x, y:point.y,...

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Последнее сообщение Anonymous
18 дек 2024, 03:12
FFMPEG не удается при конверсии с .mov в .mp4 не удается на 98%

Последнее сообщение Anonymous « 26 фев 2025, 06:19
Добавлено в форуме Php

Anonymous » 26 фев 2025, 06:19 » в форуме Php

Наш код ниже. При преобразовании загруженного .mov в .mp4 преобразование останавливается на уровне 98%.

Почти все другие наши предпочтительные форматы кодируют безупречно. У кого -нибудь есть подсказка о том, где мы ошиблись? Мы боремся за это...

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Последнее сообщение Anonymous
26 фев 2025, 06:19
Почему фон не удаляется, хотя у моего PNG прозрачный фон?

Последнее сообщение Anonymous « 02 июл 2024, 20:09
Добавлено в форуме C#

Anonymous » 02 июл 2024, 20:09 » в форуме C#

У меня есть изображение в формате PNG без фона и с альфа-каналом. Несмотря на pawn.BackColor = Color.Transparent;, фон все еще существует. О чем речь?
Вот весь мой код:
///
namespace ludo_game
{
public partial class Form1 : Form
{
public Form1()
{...

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Последнее сообщение Anonymous
02 июл 2024, 20:09

Вернуться в «IOS»