AVAssetWriter codec type hevc

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I a trying to transcode an H264 video to HEVC using AVAssetWriter and it fails on iPhone 6s. Supposedly, iPhone 6s supports HEVC for transcoding, not real time video encoding. The same code works on iPhone 7 and above. If iPhone 6s doesn't supports hevc codec, how do we programmatically determine supported codecs at runtime?

                let bitrate = trackBitrate/5 

                let trackDimensions = trackSize

                let compressionSettings: [String: Any] = [



                    AVVideoAverageBitRateKey: bitrate,

                    AVVideoMaxKeyFrameIntervalKey: 30,

                    AVVideoProfileLevelKey: kVTProfileLevel_HEVC_Main_AutoLevel

                ]

                var videoSettings: [String : Any] = [

                    AVVideoWidthKey: trackDimensions.width,

                    AVVideoHeightKey: trackDimensions.height,

                    AVVideoCompressionPropertiesKey: compressionSettings

                ]



                videoSettings[AVVideoCodecKey] =  AVVideoCodecType.hevc

asked Oct 11 '18 at 19:26

Deepak Sharma

1,4442038

add a comment |

                let bitrate = trackBitrate/5 

                let trackDimensions = trackSize

                let compressionSettings: [String: Any] = [



                    AVVideoAverageBitRateKey: bitrate,

                    AVVideoMaxKeyFrameIntervalKey: 30,

                    AVVideoProfileLevelKey: kVTProfileLevel_HEVC_Main_AutoLevel

                ]

                var videoSettings: [String : Any] = [

                    AVVideoWidthKey: trackDimensions.width,

                    AVVideoHeightKey: trackDimensions.height,

                    AVVideoCompressionPropertiesKey: compressionSettings

                ]



                videoSettings[AVVideoCodecKey] =  AVVideoCodecType.hevc

asked Oct 11 '18 at 19:26

Deepak Sharma

1,4442038

add a comment |

                let bitrate = trackBitrate/5 

                let trackDimensions = trackSize

                let compressionSettings: [String: Any] = [



                    AVVideoAverageBitRateKey: bitrate,

                    AVVideoMaxKeyFrameIntervalKey: 30,

                    AVVideoProfileLevelKey: kVTProfileLevel_HEVC_Main_AutoLevel

                ]

                var videoSettings: [String : Any] = [

                    AVVideoWidthKey: trackDimensions.width,

                    AVVideoHeightKey: trackDimensions.height,

                    AVVideoCompressionPropertiesKey: compressionSettings

                ]



                videoSettings[AVVideoCodecKey] =  AVVideoCodecType.hevc

asked Oct 11 '18 at 19:26

Deepak Sharma

1,4442038

                let bitrate = trackBitrate/5 

                let trackDimensions = trackSize

                let compressionSettings: [String: Any] = [



                    AVVideoAverageBitRateKey: bitrate,

                    AVVideoMaxKeyFrameIntervalKey: 30,

                    AVVideoProfileLevelKey: kVTProfileLevel_HEVC_Main_AutoLevel

                ]

                var videoSettings: [String : Any] = [

                    AVVideoWidthKey: trackDimensions.width,

                    AVVideoHeightKey: trackDimensions.height,

                    AVVideoCompressionPropertiesKey: compressionSettings

                ]



                videoSettings[AVVideoCodecKey] =  AVVideoCodecType.hevc

ios avfoundation avassetwriter hevc avassetwriterinput

asked Oct 11 '18 at 19:26

Deepak Sharma

1,4442038

asked Oct 11 '18 at 19:26

Deepak Sharma

1,4442038

asked Oct 11 '18 at 19:26

Deepak Sharma

1,4442038

asked Oct 11 '18 at 19:26

Deepak Sharma

1,4442038

asked Oct 11 '18 at 19:26

Deepak Sharma

1,4442038

add a comment |

1 Answer
1

active

oldest

votes

I ended up doing it this way

if #available(iOS 11.0, *),  AVCaptureVideoDataOutput().availableVideoCodecTypes.contains(.hevc) {

            //use .hevc settings here

        } else {

            //use .h264 settings here

        }

The #available check is needed to make the compiler happy if your app is targeting < iOS 11

edited Mar 18 at 12:37

ugur

2,19831439

answered Jan 3 at 11:54

Ehab Amer

35218

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

I ended up doing it this way

if #available(iOS 11.0, *),  AVCaptureVideoDataOutput().availableVideoCodecTypes.contains(.hevc) {

            //use .hevc settings here

        } else {

            //use .h264 settings here

        }

The #available check is needed to make the compiler happy if your app is targeting < iOS 11

edited Mar 18 at 12:37

ugur

2,19831439

answered Jan 3 at 11:54

Ehab Amer

35218

add a comment |

I ended up doing it this way

if #available(iOS 11.0, *),  AVCaptureVideoDataOutput().availableVideoCodecTypes.contains(.hevc) {

            //use .hevc settings here

        } else {

            //use .h264 settings here

        }

The #available check is needed to make the compiler happy if your app is targeting < iOS 11

edited Mar 18 at 12:37

ugur

2,19831439

answered Jan 3 at 11:54

Ehab Amer

35218

add a comment |

I ended up doing it this way

if #available(iOS 11.0, *),  AVCaptureVideoDataOutput().availableVideoCodecTypes.contains(.hevc) {

            //use .hevc settings here

        } else {

            //use .h264 settings here

        }

The #available check is needed to make the compiler happy if your app is targeting < iOS 11

edited Mar 18 at 12:37

ugur

2,19831439

answered Jan 3 at 11:54

Ehab Amer

35218

I ended up doing it this way

if #available(iOS 11.0, *),  AVCaptureVideoDataOutput().availableVideoCodecTypes.contains(.hevc) {

            //use .hevc settings here

        } else {

            //use .h264 settings here

        }

The #available check is needed to make the compiler happy if your app is targeting < iOS 11

edited Mar 18 at 12:37

ugur

2,19831439

answered Jan 3 at 11:54

Ehab Amer

35218

edited Mar 18 at 12:37

ugur

2,19831439

edited Mar 18 at 12:37

ugur

2,19831439

edited Mar 18 at 12:37

ugur

2,19831439

answered Jan 3 at 11:54

Ehab Amer

35218

answered Jan 3 at 11:54

Ehab Amer

35218

answered Jan 3 at 11:54

Ehab Amer

35218

add a comment |

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