Error merging videos that have been generated from images with no audio

[rtvanals]

I'm generating a handful of videos from images using this:

    static func makeVideo(image: UIImage, success: ((URL) -> Void)?, failure: ((Error) -> Void)?) {
        VideoGenerator.shouldOptimiseImageForVideo = true
        VideoGenerator.fileName = UUID().uuidString
        VideoGenerator.videoDurationInSeconds = 3

        VideoGenerator.current.generate(withImages: [image], andAudios: [], andType: .single, { _ in

        }, success: { url in
            success?(url)
        }) { error in
            failure?(error)
        }
    }

Then, when I try to merge the videos with this method:

    static func mergeVideos(urls: [URL], success: @escaping ((URL) -> Void), failure: @escaping ((Error) -> Void)) {
        VideoGenerator.presetName = AVAssetExportPresetPassthrough
        VideoGenerator.fileName = UUID().uuidString
        VideoGenerator.mergeMovies(videoURLs: urls, success: success, failure: failure)
    }

where I pass the file URLs of the generated videos, I get the following error:

Error Domain=AVFoundationErrorDomain Code=-11838 "Operation Stopped" UserInfo={NSLocalizedFailureReason=The operation is not supported for this media., NSLocalizedDescription=Operation Stopped, NSUnderlyingError=0x6000010fc900 {Error Domain=NSOSStatusErrorDomain Code=-16976 "(null)"}}

If I add an audio file to the VideoGenerator.current.generate method, I can merge them without any issue. Here is the updated makeVideo method that works:

    static func makeVideo(image: UIImage, success: ((URL) -> Void)?, failure: ((Error) -> Void)?) {
        guard let audioURL = Bundle.main.url(forResource: "audio" , withExtension: "mp3") else {
            let err = NSError(domain: "VideoGenDomain", code: 10001, userInfo: [NSLocalizedDescriptionKey : "Unable to find audio file"])
            failure?(err)
            return
        }
        
        VideoGenerator.shouldOptimiseImageForVideo = true
        VideoGenerator.fileName = UUID().uuidString
        VideoGenerator.videoDurationInSeconds = 3
        
        VideoGenerator.current.generate(withImages: [image], andAudios: [audioURL], andType: .single, { _ in

        }, success: { url in
            success?(url)
        }) { error in
            failure?(error)
        }
    }

[tgeorgieva]

@rtvanals The merge video functionality doesn't support videos without audio.

[hezhez]

Hi @tgeorgieva, merging videos without sound is going to be possible ahead ? or is there any other option for that ? it is really necessary for my project :)

[tgeorgieva]

@hezhez At the moment, I don’t have any plans to implement this. But you can easily fork the project and use it as a starting point for your solution.

[hezhez]

@tgeorgieva Thanks :)