ExoPlayer cache | 易学教程

问题

I'm traying to use ExoPlayer for playback video over http. And I want to save video after video was loaded and play it from cache. How Do implement cache and playback from cache? Can give me any samples.

回答1:

You use cacheDataSource created using cache and dataSource. This cacheDataSource is then used by ExtractorSampleSource.Below is the code for audioRenderer, similarly can be done for videoRender; passing to exoplayerInstance.prepare(renderers).

Cache cache = new SimpleCache(mCtx.getCacheDir(), new LeastRecentlyUsedCacheEvictor(1024 * 1024 * 10));
DataSource dataSource = new DefaultUriDataSource(mCtx, "My Player");
CacheDataSource cacheDataSource = new CacheDataSource(cache, dataSource, false, false);
Allocator allocator = new DefaultAllocator(BUFFER_SEGMENT_SIZE);
ExtractorSampleSource extractorSampleSource = new ExtractorSampleSource(trackURI, cacheDataSource, allocator, BUFFER_SEGMENT_COUNT*BUFFER_SEGMENT_SIZE, new Mp3Extractor());
MediaCodecAudioTrackRenderer audioTrackRenderer = new MediaCodecAudioTrackRenderer(extractorSampleSource);

回答2:

What protocol are you using mpeg-dash or plain http.

You can override HttpDataSource and write incoming bytes to a file and when playing again check if file exists at the desired location and change the InputStream fed to the player from your file instead of HttpDataSource.

回答3:

I use exoplayer with this library: https://github.com/danikula/AndroidVideoCache It helps you cache the video from a resource (URL, file)...

This is my sample code:

String mediaURL = "https://my_cool_vid.com/vi.mp4";
SimpleExoPlayer exoPlayer = ExoPlayerFactory.newSimpleInstance(getContext());
HttpProxyCacheServer proxyServer = HttpProxyCacheServer.Builder(getContext()).maxCacheSize(1024 * 1024 * 1024).build();

String proxyURL = proxyServer.getProxyUrl(mediaURL);


DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(getContext(),
                Util.getUserAgent(getContext(), getActivity().getApplicationContext().getPackageName()));


exoPlayer.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory)
                .createMediaSource(Uri.parse(proxyURL)););

来源：https://stackoverflow.com/questions/26095261/exoplayer-cache

标签

android

exoplayer