Unexpected behaviour using seek in react-native-video - react-native

Question

In react-native-video, whenever I click on the (custom) progress bar on a value less than 50% (half of it), the video jumps to start instead of seeking to the right time. When I click above 50%, it goes to 50%. It's not actually 50, more like 55-60 but whatever. This is really weird, was not able to find anything online!
import Video from 'react-native-video';
import ProgressBar from "react-native-progress/Bar";
class Welcome extends React.Component {
player;
constructor(props) {
super(props)
//this.player = React.createRef();
this.state = {
paused: false,
loaded: false,
progress: 0,
duration: 0,
pressed:false,
screenType: 'contain',
};
console.log("--- Screen --- Welcome")
}
componentDidMount = () => {
setTimeout(() => {
this.player.seek(8)
},8000)
}
handleMainButtonTouch = () => {
console.log("inside handleMainButtonTouch")
console.log(this.state.progress)
if (this.state.progress >= 1) {
this.player.seek(0);
}
this.setState(state => {
return {
paused: !state.paused,
};
});
};
handleProgressPress = e => {
const position = e.nativeEvent.locationX;
const progress = parseFloat(position / 250) * this.state.duration;
const isPlaying = !this.state.paused;
this.player.seek(progress);
};
handleProgress = progress => {
this.setState({
progress: parseFloat(progress.currentTime) / parseFloat(this.state.duration),
});
};
handleEnd = () => {
this.setState({
paused: true ,
progress: 0 ,
});
this.player.seek(0);
};
handleLoad = meta => {
this.setState({
loaded: true,
duration: meta.duration,
});
};
handleFullScreen = () => {
if (this.state.screenType == 'contain')
this.setState({ screenType: 'cover' });
else this.setState({ screenType: 'contain' });
};
render() {
return (
<View style={styles.container}>
<View style={this.handleOuterViewStyle()}>
<Video
paused={this.state.paused}
source={{uri: "https://res.cloudinary.com/dy6bbey4u/video/upload/v1565532579/fam/videos/sample.mp4"}}
resizeMode={this.state.screenType}
onLoad={this.handleLoad}
onProgress={this.handleProgress}
onEnd={this.handleEnd}
ref={ref => {
this.player = ref;
}}
/>
{ this.state.loaded &&
<View style={styles.controls}>
<TouchableWithoutFeedback onPress={this.handleMainButtonTouch}>
<Text>Play</Text>
</TouchableWithoutFeedback>
<TouchableWithoutFeedback onPress={this.handleProgressPress}>
<View>
<ProgressBar
animated={false}
progress={this.state.progress}
color="#FFF"
borderColor="#FFF"
width={250}
height={20}
/>
</View>
</TouchableWithoutFeedback>
<TouchableWithoutFeedback onPress={this.handleFullScreen}>
<Text style={styles.fullscreenButton}>Full</Text>
</TouchableWithoutFeedback>
</View>
}
</View>
</View>
)
}
}
export default Welcome

Answer 1

I was also facing the same problem. Whenever i backward the video, it goes forward. The problem is depending on the video format. I was using the Webm format. Now the mp4 format solved the problem.
P.S. Sorry for the late reply.

Answer 2

ffmpeg -i input.mp4 -force_key_frames "expr:gte(t,n_forced*1)" output.mp4
Solved by forcing adding keyframes to the video.

Answer 3

So the solution for me was changing line 640 from android/src/main/java/com/brentvatne/react/ReactVideoView.java
- super.seekTo(msec);
+ mMediaPlayer.seekTo(msec,3);
Original response: https://github.com/react-native-video/react-native-video/issues/2230#issuecomment-892982288