Gpuimage Video Recording plus filters

Creating Cameras and filters

-(void) Createvideocamera: (avcapturedeviceposition) frontorback{

[Videocamera Removealltargets];

Videocamera = nil;

Videocamera = [[Gpuimagevideocamera alloc] initwithsessionpreset:avcapturesessionpreset1280x720 cameraPosition: Frontorback];

Videocamera.outputimageorientation = uiinterfaceorientationportrait;

Horizontallymirrorfrontfacingcamera Property YES means the front is not mirrored

Videocamera.horizontallymirrorfrontfacingcamera = YES;

Videocamera.horizontallymirrorrearfacingcamera = NO;

Crop Filter

Cropfilter = [[Gpuimagecropfilter alloc] Initwithcropregion:cgrectmake (0, (1280-720)/2/1280.0, 1,720/1280.0)];

Custom Beauty Filters

Beautyfilter = [[Gpuimagebeautyfilter alloc] init];

Filter grouping

Filtergroup = [[Gpuimagefiltergroup alloc] init];

No beauty.

if (!isbeauty) {

[Videocamera Addtarget:cropfilter];

Preview Layer/* Preview layer can omit */

[Cropfilter Addtarget:preview];

}

else{///Beauty and cropping filters are added to the filter group.

[Cropfilter Addtarget:beautyfilter];

[Filtergroup Addtarget:cropfilter];

[Filtergroup Addtarget:beautyfilter];

[Filtergroup Setinitialfilters:[nsarray Arraywithobject:cropfilter];

[Filtergroup Setterminalfilter:beautyfilter];

[Filtergroup forceProcessingAtSize:preView.frame.size];

[Filtergroup Usenextframeforimagecapture];

[Videocamera Addtarget:filtergroup];

[Filtergroup Addtarget:preview];

}

Start capturing

[Videocamera Startcameracapture];

}

Start recording a segmented recording to instantiate one Moviewriter at a time

-(void) Startphoto {

Videos recorded based on the time generation path are stored in the path to be unique

NSString *pathtomovie = [self getvideomergefilepathstring];

[Videoarray Addobject:pathtomovie];

NSLog (@ "%@", Pathtomovie);

Unlink ([Pathtomovie utf8string]);

Nsurl *movieurl = [Nsurl Fileurlwithpath:pathtomovie];

Moviewriter = [[Gpuimagemoviewriter alloc] Initwithmovieurl:movieurl size:cgsizemake (720, 720) FileType:AVFileTypeQ Uicktimemovie Outputsettings:videosettings];

Moviewriter = [[Gpuimagemoviewriter alloc] Initwithmovieurl:movieurl size:cgsizemake (720, 720)];

Audiosettings Some audio configurations

/*

Audiochannellayout channellayout;

memset (&channellayout, 0, sizeof (audiochannellayout));

Channellayout.mchannellayouttag = Kaudiochannellayouttag_stereo;

Audiosettings = [Nsdictionary Dictionarywithobjectsandkeys:

[NSNumber NUMBERWITHINT:KAUDIOFORMATMPEG4AAC], avformatidkey,//developing the coding algorithm

[NSNumber Numberwithint:2], avnumberofchannelskey,//Channel

[NSNumber numberwithfloat:16000.0], avsampleratekey,//sample rate

[NSData datawithbytes:&channellayout length:sizeof (audiochannellayout)], Avchannellayoutkey,

[NSNumber numberwithint:32000], avencoderbitratekey,//encoding rate

NIL];

*/

[Moviewriter Sethasaudiotrack:yes audiosettings:audiosettings];

Moviewriter.hasaudiotrack = YES;

[Videocamera addaudioinputsandoutputs];

Videocamera.audioencodingtarget = Moviewriter;

if (!isbeauty) {

[Cropfilter Addtarget:moviewriter];

}

else {

[Filtergroup Addtarget:moviewriter];

}

[Moviewriter startrecording];

}

Finish recording

-(void) endrecording {

[Moviewriter finishrecording];

[Cropfilter Removetarget:moviewriter];

[Beautyfilter Removetarget:moviewriter];

[Filtergroup Removetarget:moviewriter];

Videocamera.audioencodingtarget = nil;

[Self savePhotoCmare:videoArray.lastObject];

}

Write a recorded video to a photo album

-(void) Savephotocmare: (NSString *) Pathtomovie {

Nsurl *url = [[Nsurl alloc] initfileurlwithpath:pathtomovie];

Alassetslibrary *library = [[Alassetslibrary alloc] init];

if ([library Videoatpathiscompatiblewithsavedphotosalbum:url]) {

[Library Writevideoatpathtosavedphotosalbum:url

completionblock:^ (Nsurl *asseturl, Nserror *error) {

Dispatch_async (Dispatch_get_main_queue (), ^{

if (Error) {

Uialertview *alert = [[Uialertview alloc] initwithtitle:@ "Error" message:@ "Video saving Failed" Delegate:nil Cancelbutto ntitle:@ "OK" otherbuttontitles:nil, nil];

[Alert show];

}else{

Uialertview *alert = [[Uialertview alloc] initwithtitle:@ "Video Saved" message:@ "Saved to Photo Album" Delegate:self Canc elbuttontitle:@ "OK" otherbuttontitles:nil];

[Alert show];

}

});

}];

}

}

Gpuimage Video Recording plus filters