I am designing an android video editor app and one of the feature is to trim video, selected from gallery. I can give an option to select the range using the RangeSlider, displayed at the bottom of the VideoView, to the user and then use FFMPEG library to trim the video.
But i am not able to show the progress of the video being played, within the selected range, on the RangeSlider.
Not sure if i am approaching properly, hence please provide me a solution to achieve this.
When you change the bounds of the RangeSlider, you need to calculate the startTime and endTime of the video. Once you are able to calculate the startTime and endTime, you need to create a ClippingMediaSource instance.
public ClippingMediaSource(MediaSource mediaSource, long startPositionUs, long endPositionUs)
ClippingMediaSource takes three paramters:
MediaSource
startPositionUs
endPositionUs
You can create media source by following the below snippet:
fun getMediaSource(file: String): MediaSource {
return ProgressiveMediaSource.Factory(DefaultDataSourceFactory(context, userAgent))
.createMediaSource(MediaItem.fromUri(Uri.parse(file)))
}
After creating the MediaSource you can pass on the values for start and end time you had calculated.
Note: startPositionUs and endPositionUs are in micro-seconds.
Once done, you can pass this media source to your ExoPlayer and it will play only the selected/trimmed part of your video.
Related
I need to set duration of a video for a thumbnail to 5 seconds and loop it. I got the loop part, but I can't find documentation for setting specific duration
I tried exoPlayer.seek(duration) but that didn't work
You may use ClippingMediaSource:
ClippingMediaSource​(MediaSource mediaSource, long startPositionUs, long endPositionUs)
Creates a new clipping source that wraps the specified source and provides samples between the specified start and end position.
You can convert to have a new media source and set this new media source for your ExoPlayer:
// Create a new media source with your specified period
val newMediaSource = ClippingMediaSource(mediaSource, 0, 5_000_000)
Is there a way to get the current frame number of the video while video is playing, or when the video has paused? using videoview.
With the VideoWiew, you can retrieve the playback time in milliseconds with getCurrentPosition. Then you have to make some calculations based on the frame rate of the video itself, for which I invite you to read here.
You should be able to get it by calling getCurrentPosition() on your videoView. Such as(videoView.getCurrentPosition). and place that inside a pause button or something along those lines.
getCurrentPosition() – Returns an integer value indicating the current position of playback.
Source: https://www.techotopia.com/index.php/Kotlin_Android_Video_Playback_using_the_VideoView_and_MediaController_Classes
How do you get the current time for a live video(rtmp) when using Exoplayer?
I tried
player.getCurrentPosition()
but the values start from 0 and not the actual time of the live stream. Is it possible to get the actual video time?
In this case, I implement with subtraction between date now with user start date playing like this. dateStartPlaying is initialized when we want to play some content / change the content.
private long getCurrentTimeLiveStreaming(){
return new Date().getTime() - dateStartPlaying.getTime();
}
I want to change current playing video to another seamlessly. But there is a little bit delay before the next video will be playing. I don't know what the next video will be. How I can do this?
You can use playlists with ExoPlayer. This way the playback transitions at the end of item 1 to 2 without buffering.
DynamicConcatenatingMediaSource mainSource = new DynamicConcatenatingMediaSource();
mainSource.addMediaSource(mediaSource1);
player.prepare(mainSource);
// later...
mainSource.addMediaSource(mediaSource2);
As soon as you know the second media you can add it while the player is playing.
https://medium.com/google-exoplayer/dynamic-playlists-with-exoplayer-6f53e54a56c0
I am working on an Android project that involves the use of Google's ExoPlayer.
I have a list of video sources which I build a playlist from using the following code:
for (int i = 0; i < vidList.length(); i++) {
MediaSource source = new ExtractorMediaSource(Uri.parse(vidList.getJSONObject(i).getString("url")),
buildDataSourceFactory(bandwidthMeter), extractorsFactory, mainHandler, HomeFragment.this);
mediaSources.add(source);
captions.add(vidList.getJSONObject(i).getString("caption"));
}
mediaSource = new ConcatenatingMediaSource(mediaSources.toArray(new MediaSource[mediaSources.size()]));
I then call
exoplayer.prepare(mediasource, false, false)
and the videos play in succession fine. I would like to display the caption of the currently playing video in a textView and so I have a separate list that holds the "caption" values for each video.
From scouring through the code I see that I can get the currently playing video in the playlist like this;
exoPlayer.getCurrentPeriodIndex()
Which seems to work and returns the index except for one problem. It returns the value of 0 twice as playback starts. That is video at index 0 returns period 0 as well as video at index 1. This only occurs at indexes 0 and 1 and thereafter everything else looks fine except that the getCurrentPeriodIndex() will return theAccurateIndex - 1.
I see this also happening in the demo Exoplayer application.
Is there a better way to determine what track is currently playing in the playlist?
Thanks.
To find the currently playing track, you need to reference currentWindowIndex exoPlayer field. Looks like this in Java...
exoPlayer.getCurrentWindowIndex()
I'm not sure what getCurrentPeriodIndex() does, and the docs don't elaborate, and I don't like speculating.
exoPlayer.getCurrentWindowIndex() is Deprecated.
Use exoPlayer.getCurrentMediaItemIndex() instead.