- (void) startEffect:(TXEffectType)type  startTime:(float)startTime;
- (void) stopEffect:(TXEffectType)type  endTime:(float)endTime;

// The special effect type (`type` parameter) is defined in the `TXEffectType` constant:
typedef  NS_ENUM(NSInteger,TXEffectType)
{
    TXEffectType_ROCK_LIGHT,  // Dynamic light-wave
    TXEffectType_DARK_DRAEM,  // Dark dream
    TXEffectType_SOUL_OUT,    // Soul out
    TXEffectType_SCREEN_SPLIT,// Screen split
    TXEffectType_WIN_SHADOW,  // Window blinds
    TXEffectType_GHOST_SHADOW,// Ghost shadow
    TXEffectType_PHANTOM,     // Phantom
    TXEffectType_GHOST,       // Ghost
    TXEffectType_LIGHTNING,   // Lightening
    TXEffectType_MIRROR,      // Mirror
    TXEffectType_ILLUSION,    // Illusion
};

- (void) deleteLastEffect;
- (void) deleteAllEffect;

// Use the first special effect filter between the first and second seconds
[_ugcEdit startEffect:TXEffectType_SOUL_OUT startTime:1.0];
[_ugcEdit stopEffect:TXEffectType_SOUL_OUT startTime:2.0)];
// Use the second special effect filter between the third and fourth seconds
[_ugcEdit startEffect:TXEffectType_SPLIT_SCREEN startTime:3.0];
[_ugcEdit stopEffect:TXEffectType_SPLIT_SCREEN startTime:4.0];
// Delete the special effect filter set between the third and fourth seconds
[_ugcEdit deleteLastEffect];

- (void) setSpeedList:(NSArray *)speedList;

// The `TXSpeed` parameters are as follows:
@interface TXSpeed: NSObject
@property (nonatomic, assign) CGFloat               startTime;      // Speed change start time in s
@property (nonatomic, assign) CGFloat               endTime;        // Speed change end time in s
@property (nonatomic, assign) TXSpeedLevel          speedLevel;     // Speed change level
@end

Currently, multiple speed change levels are supported, which are defined in the `TXSpeedLevel` constant:
typedef NS_ENUM(NSInteger, TXSpeedLevel) {
    SPEED_LEVEL_SLOWEST,       // Ultra-slow 0.25x of the source video's speed
    SPEED_LEVEL_SLOW,          // Slow 0.5x of the source video's speed
    SPEED_LEVEL_NOMAL,         // Normal 1x of the source video's speed
    SPEED_LEVEL_FAST,          // Fast 1.5x of the source video's speed
    SPEED_LEVEL_FASTEST,       // Ultra-fast 2x of the source video's speed
};

// The SDK supports speed change of multiple video segments. This demo only shows slow playback of one video segment.
  TXSpeed *speed =[[TXSpeed alloc] init];
  speed.startTime = 1.0;
  speed.endTime = 3.0;
  speed.speedLevel = SPEED_LEVEL_SLOW;
  [_ugcEdit setSpeedList:@[speed]];

- (void) setReverse:(BOOL)isReverse;

[_ugcEdit setReverse:YES];

- (void) setRepeatPlay:(NSArray *)repeatList;

// The `TXRepeat` parameters are as follows:
@interface TXRepeat: NSObject
@property (nonatomic, assign) CGFloat               startTime;      // Loop start time in s
@property (nonatomic, assign) CGFloat               endTime;        // Loop end time in s
@property (nonatomic, assign) int                   repeatTimes;    // Number of repeats
@end

TXRepeat *repeat = [[TXRepeat alloc] init];
repeat.startTime = 1.0;  
repeat.endTime = 3.0;
repeat.repeatTimes = 3;  // Number of repeats
[_ugcEdit setRepeatPlay:@[repeat]];