IOS UIImagePicker with mp4 format - uiimagepickercontroller

Question

Is it possible to save video and add it to custom ALAsset, captured from UIImagePicker in mp4 format? Or I have to save it in .mov and make compression by AVAssetExportSession?

Answer 1

Yes, you can compress video using AVAssetExportSession. Here you can specify video type, quality and output url for compress video.
See below methods:
- (void) saveVideoToLocal:(NSURL *)videoURL {
#try {
NSArray *documentsDirectory = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docPath = [documentsDirectory objectAtIndex:0];
NSString *videoName = [NSString stringWithFormat:#"sampleVideo.mp4"];
NSString *videoPath = [docPath stringByAppendingPathComponent:videoName];
NSURL *outputURL = [NSURL fileURLWithPath:videoPath];
NSLog(#"Loading video");
[self convertVideoToLowQuailtyWithInputURL:videoURL outputURL:outputURL handler:^(AVAssetExportSession *exportSession) {
if (exportSession.status == AVAssetExportSessionStatusCompleted) {
NSLog(#"Compression is done");
}
[self performSelectorOnMainThread:#selector(doneCompressing) withObject:nil waitUntilDone:YES];
}];
}
#catch (NSException *exception) {
NSLog(#"Exception :%#",exception.description);
[self performSelectorOnMainThread:#selector(doneCompressing) withObject:nil waitUntilDone:YES];
}
}
//---------------------------------------------------------------
- (void)convertVideoToLowQuailtyWithInputURL:(NSURL*)inputURL outputURL:(NSURL*)outputURL handler:(void (^)(AVAssetExportSession*))handler {
[[NSFileManager defaultManager] removeItemAtURL:outputURL error:nil];
AVURLAsset *asset = [AVURLAsset URLAssetWithURL:inputURL options:nil];
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:asset presetName:AVAssetExportPresetPassthrough];
exportSession.outputURL = outputURL;
exportSession.outputFileType = AVFileTypeMPEG4;
[exportSession exportAsynchronouslyWithCompletionHandler:^(void) {
handler(exportSession);
}];
}
Here I saved compress video to document directory of application. You can check detail working of this in below sample code:
Sample demo:

Answer 2

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])
{
picker.dismiss(animated: true, completion: nil)
guard let mediaType = info[UIImagePickerControllerMediaType] as? String else
{
return
}
if mediaType == "public.movie"
{
if let videoURL = info[UIImagePickerControllerMediaURL] as? URL
{
var videoData:Data!
do {
videoData = try Data(contentsOf: videoURL, options: [Data.ReadingOptions.alwaysMapped])
}
catch
{
print(error.localizedDescription)
return
}
if videoData != nil
{
let writePath = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("vid1.mp4")
print("writePath - \(writePath)")
do{
try videoData.write(to: writePath)
}catch{
print("Error - \(error.localizedDescription)")
}
}
}
}
}