This works and can tell you if it is basically working and a separate audio file is synced, but only appears to show the first adaptation. Local testing of DASH can be done with the GPAC MP4Client: MP4Client stream.mpd Some players appear like they’re trying to play HLS, but I haven’t found a Linux GUI player yet that can play the stream directly from the file sytem like this yet.
In the case of HLS it looks like VLC is not respecting relative paths the way it needs to. Neither does this for an HLS-TS manifest: vlc master.m3u8 So this doesn’t work for a DASH manifest (Media Presentation Description): vlc stream.mpd
Assume for this post that I’m already in a directory with the video manifest files: cd /directory/with/video I’ve had very little luck using these directly from the file system. Players like VLC and other desktop players have limited support for these formats, so even when they don’t work in these players that doesn’t mean the streams won’t play in a browser or on a mobile device. Here’s what I discovered about playing the files without a web server. I had hoped that it would be fairly easy to test these formats directly without putting them behind a web server. Support for captions in these formats is lacking for many HTML5 players.Īlso note that all this testing is being done on Ubuntu 16.04.1 LTS though the Xubuntu variant and it is possible I’ve compiled some of these tools myself (like ffmpeg) rather than using the version in the Ubuntu repositories. They can also include links to text tracks like captions and subtitles. Also, all of these files are intended to be served up over HTTP.
Radiant media player full screen problems how to#
For instance it is possible to create a separate initialization MP4 file that includes the metadata that allows a client to know how to play back each of the segment files that lack this information. In fact depending on how the actual video files are created they may even lack data necessary to play back independent of another file. In some cases the video files will be self-contained, muxed video and audio and byte range requests will be used to serve up segments, but in other cases the video is segmented with the audio in either a separate single file or again the audio segmented similar to the video. So what we want to accomplish is the ability to play back video by referring to the manifest file instead of any particular video file or files. Instead these formats use a manifest file which lists out the various adaptations–different resolutions and bitrates–that a client can choose to play based on bandwidth and other factors. The important thing to remember is that you’re not playing back a video file directly. So I’ll break down testing by DASH, HLS TS, and HLS fMP4 when applicable. While DASH can use any codec I’ll only be testing fragmented MP4s (though maybe not fully conformant to DASH-IF AVC/264 interoperability points). Until uptake of iOS 10 is greater you likely still need to deliver video with HLS-TS as well (or go with an HLS-TS everywhere approach). This now allows you to use the same fragmented MP4 files for both DASH and HLS streaming. Since mid-2016 and iOS 10+ HLS segments can be delivered as fMP4. While I’m writing about testing both DASH and HLS adaptive bitrate formats, really we need to consider 3 formats as HLS can be delivered as MPEG-2 TS segments or fragmented MP4 (fMP4). I’ll list both the local and online players that you can try. I keep forgetting how I can effectively test DASH and HLS adaptive bitrate streams I’ve created, so I’m jotting down some notes here as a reminder. As I’ve gone along trying different approaches for creating these streams, I’ve wanted reliable ways to test them on a Linux desktop. MediaPlayer.OnPreparedListener onpreparedlistener = new MediaPlayer.I’m developing a script to process some digitized and born digital video into adaptive bitrate formats. Using OnPrepared so we can use the mediaPlayer.getDuration() and to avoid further problems Video_file = new File(video_file_string) Video_file_string = getIntent().getStringExtra("video_file")
preparing the Video file for the VideoView
Radiant media player full screen problems code#
The full code is like this: // Activity OnCreated In other words, i divided the video in 10 pieces, with MILISECONDS_TO_JUMP from the beginning of the video.Īfter that i use the seekTo from ekTo(video_seek) in the method onPrepared to start each of the VideoViews in a different time. There're 9 VideoViews in the interface each one being change with a seekTo with value calculated by this variable: video_frames_to_jump = (mediaPlayer.getDuration() - MILISECONDS_TO_JUMP)/10 So what i did was make an activity to record the video and send the URI from the video to another activity that will show 9 frames from that recorded video. My goal is to show the user 9 frames video that was recorded so he can select one of them.
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