Latest 0.1.2
License MIT
Platforms ios 10.0, requires ARC

A set of utility classes for reversing AVAsset video and audio. These classes will reverse video, audio and videos with audio. Video reversal is based heavily on Chris Sung’s CSVideoReverse class.


If you are using cocoapods:

pod 'ILABReverseVideoExporter'

Otherwise, you can drag the files in the Source directory into your project.

I don’t use carthage, so shrug.


Usage is pretty simple. All processing happens in on a separate thread and, thanks to Chris, is very memory performant.

#import <ILABReverseVideoExporter/ILABReverseVideoExporter.h>

ILABReverseVideoExportSession *exportSession = [ILABReverseVideoExportSession exportSessionWithURL:sourceAssetURL outputURL:outputAssetURL];

ILABProgressBlock progressBlock = ^(NSString *currentOperation, float progress) {
    // If progress == INFINITY then the class is performing
    // a process whose progress can't be tracked
    NSLog(@"Progress: %f", (progress == INFINITY) ? '0' : progress * 100.);

ILABCompleteBlock completeBlock = ^(BOOL complete, NSError *error) {

[exportSession exportAsynchronously:progressBlock complete:completeBlock];


To get the video running, simply open up a terminal to the demo’s directory and type:

pod install


Again, special thanks to Chris Sung for the video reversing code.

Latest podspec

    "name": "ILABReverseVideoExporter",
    "version": "0.1.2",
    "summary": "Utility class for exporting reversed AVAssets.  Based on CSVideoReverse by Chris Sung.",
    "homepage": "",
    "license": {
        "type": "MIT",
        "file": "LICENSE"
    "authors": {
        "Jon Gilkison": "[email protected]"
    "source": {
        "git": "",
        "tag": "0.1.2"
    "platforms": {
        "ios": "10.0"
    "requires_arc": true,
    "source_files": "Source"

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