blocks|key|3017929|text|你有没有尝试在URL中给播放器一个start参数？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3017930|如下所示：|3017931|"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8?start=0“|offset|length|3017932|entityMap|0|LINK|mutability|MUTABLE|url|http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8?start=0^0|0|0|1|1Z|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@$F|S|G|T|1|U]]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

Did you try to give the Player a start parameter in the URL?

Like this:

"<a href="http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8?start=0" rel="nofollow">http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8?start=0</a>"

blocks|key|185483|text|+++<?xml+version="1.0"+encoding="utf-8"+?>+
++++-+<RelativeLayout+xmlns:android="http://schemas.android.com/apk/res/android"+android:orientation="vertical"+android:layout_width="fill_parent"+android:layout_height="fill_parent">
++++++<VideoView+android:id="@%2Bid/surface_view"+android:layout_width="fill_parent"+android:layout_height="300dp"+android:layout_gravity="center"+/>+
++++++<Button+android:id="@%2Bid/button1"+android:layout_width="wrap_content"+android:layout_height="wrap_content"+android:layout_alignParentRight="true"+android:layout_below="@%2Bid/surface_view"+android:layout_marginRight="62dp"+android:layout_marginTop="16dp"+android:text="Stop"+/>+
++++++<Button+android:id="@%2Bid/button"+android:layout_width="wrap_content"+android:layout_height="wrap_content"+android:layout_alignBaseline="@%2Bid/button1"+android:layout_alignBottom="@%2Bid/button1"+android:layout_alignParentLeft="true"+android:layout_marginLeft="34dp"+android:text="Start"+/>+
++++++</RelativeLayout>

*******************************************************************
+++++startB.setOnClickListener(new+View.OnClickListener()+{
@Override
++++++++++++public+void+onClick(View+v)+{
+++++++++++++++++mVideoView+=+(VideoView)+findViewById(R.id.surface_view);
+++++++++++++++++++mVideoView.setVideoURI(Uri.parse("http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"));++++++++++++++++
+++++++++++++++++++mVideoView.setMediaController(new+++++MediaController(MainActivity.this));
+++++++++++++++++++mVideoView.requestFocus();++++++++++++++
+++++++++++++++++++mVideoView.postInvalidateDelayed(100);++
++++++++++++++++++new+Thread(new+Runnable()+{
++++++++++++++++++++++public+void+run()+{
++++++++++++++++++++++++++mVideoView.start();

++++++++++++++++++++++}
++++++++++++++++++}).start();
++++++++++++}
++++++++});|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|185484|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code> &lt;?xml version="1.0" encoding="utf-8" ?&gt; 
 - &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt;
 &lt;VideoView android:id="@+id/surface_view" android:layout_width="fill_parent" android:layout_height="300dp" android:layout_gravity="center" /&gt; 
 &lt;Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_below="@+id/surface_view" android:layout_marginRight="62dp" android:layout_marginTop="16dp" android:text="Stop" /&gt; 
 &lt;Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBaseline="@+id/button1" android:layout_alignBottom="@+id/button1" android:layout_alignParentLeft="true" android:layout_marginLeft="34dp" android:text="Start" /&gt; 
 &lt;/RelativeLayout&gt;

*******************************************************************
 startB.setOnClickListener(new View.OnClickListener() {
@Override
 public void onClick(View v) {
 mVideoView = (VideoView) findViewById(R.id.surface_view);
 mVideoView.setVideoURI(Uri.parse("http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8")); 
 mVideoView.setMediaController(new MediaController(MainActivity.this));
 mVideoView.requestFocus(); 
 mVideoView.postInvalidateDelayed(100); 
 new Thread(new Runnable() {
 public void run() {
 mVideoView.start();

 }
 }).start();
 }
 });
</code></pre>

blocks|key|3017964|text|经过进一步的调查，我发现了以下信息，希望能帮助其他人在Android上使用HLS流媒体。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3017965|Android编码-视频编码和分割设置会对视频支持的版本产生很大影响。我最终使用HandBrake创建了一个视频，设置如下：|offset|length|style|BOLD|3017966|3017967|MP4+|unordered-list-item|3017968|H.264；Baseline+Profile；Level+3|3017969|AAC音频；44.1k；128bit+(注意：我发现JellyBean在音频方面比ICS/Honeycomb挑剔得多。一些音频比特率会创建Jellybean根本不会播放的视频。一般来说，单声道和低比特率音频似乎在Jellybean上工作得更好)。|3017970|3017971|Segmentation+-使用苹果MediaFileSegmenter，我发现添加“-no-Segmentation-point-duration”和"-z+none“标志可以创建一个可以在Android3.0->4.2上运行的视频|3017972|姜饼-我无法让Android2.3开箱即用，但我发现使用Vitamio库工作得很好(有关更多信息，请参阅this+question+)|3017973|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/11898643/stream-live-video-to-android^0|0|Q|10|0|0|0|4|0|0|U|0|0|3F|0|0|0|39|0|0|1V|1G|D|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@$D|14|E|15|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|16|8|@]|9|@]|A|$]]|$1|I|3|J|5|K|7|17|8|@$D|18|E|19|F|G]]|9|@]|A|$]]|$1|L|3|M|5|K|7|1A|8|@$D|1B|E|1C|F|G]]|9|@]|A|$]]|$1|N|3|O|5|K|7|1D|8|@$D|1E|E|1F|F|G]]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1H|8|@$D|1I|E|1J|F|G]]|9|@]|A|$]]|$1|S|3|T|5|6|7|1K|8|@$D|1L|E|1M|F|G]]|9|@$D|1N|E|1O|1|1P]]|A|$]]|$1|U|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]]]

Following some further investigation, I've found the following information that can hopefully help other people get HLS streaming on Android working.

Encoding
 - The video encoding, and the segmentation setup can have a large impact on the Android versions that the video supports. I ended up creating a video using HandBrake, with the following settings:

<ul>
<li>MP4 File</li>
<li>H.264; Baseline Profile; Level 3</li>
<li>AAC Audio; 44.1k; 128bit (Note: I found that JellyBean was a lot more picky about the audio than ICS/Honeycomb. Some audio bitrates would create videos that Jellybean would not play at all. In general Mono and low bitrate audio seemed to work better on Jellybean).</li>
</ul>

Segmentation - Using the Apple MediaFileSegmenter, I found adding the "-no-floating-point-duration" and "-z none" flags allowed me to create a video that worked across Android 3.0->4.2

Gingerbread - I was unable to get Android 2.3 to work with HLS out of the box, but I did find that using the Vitamio library worked pretty well (see <a href="https://stackoverflow.com/questions/11898643/stream-live-video-to-android">this question</a> for further info)

blocks|key|187543|text|一些版本的Android似乎将http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8上的HLS解释为live+HLS而不是VOD+HLS，因此媒体播放器在接近"live“点时开始播放，接近内容结束时，大约29分钟。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|187544|原因如下:在4.3之前，HLS播放列表文件中的最后一行不会被解析，除非它以'\n‘结尾。|187545|查看该文件的更改历史：http://androidxref.com/4.3_r2.1/history/frameworks/av/media/libstagefright/httplive/M3UParser.cpp，在12/31/12，有一些更改修复了该问题。这个问题在4.4上已经不存在了。|187546|因此，解决旧版本问题的一种方法是在服务器上播放列表的最后一行之后添加换行符，或者在应用程序中实现一个HTTP代理来有效地添加该换行符，这可能不是微不足道的……|187547|entityMap|0|LINK|mutability|MUTABLE|url|http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8|1|http://androidxref.com/4.3_r2.1/history/frameworks/av/media/libstagefright/httplive/M3UParser.cpp^0|F|1R|0|0|0|B|2P|1|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|E|5|6|7|X|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|H|3|I|5|6|7|12|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|M|N|O|C|$P|S]]]]

Some versions of Android seem to interpret the HLS at <a href="http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8" rel="nofollow">http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8</a> as live HLS rather than VOD HLS, and thus media player starts close to the "live" point, close to the content end, around 29 minutes into the content.

And here's why: prior to 4.3, the last line in an HLS playlist file was not parsed unless it ended in '\n'. 

See the history of changes on that file: <a href="http://androidxref.com/4.3_r2.1/history/frameworks/av/media/libstagefright/httplive/M3UParser.cpp" rel="nofollow">http://androidxref.com/4.3_r2.1/history/frameworks/av/media/libstagefright/httplive/M3UParser.cpp</a> , on 12/31/12, there is change that fixed the problem. The issue is gone on 4.4.

So, one way to solve the problem on older versions is to add newline after the last line of the playlist on the server, or implement an HTTP proxy in your app that effectively adds that newline, which may not be trivial...

I realise that there are some issues in terms of level of support of HLS in Android. I'm trying to write a small videoplayer demo (to work on as many devices as possible); preferably without using a third party library; that can stream HLS video.

NOTE: I'm currently testing on JellyBean 4.2.2, but have access to other versions

I have managed to use the MediaPlayer class so that my app is able to start playing a stream (eg Apple's test video <a href="http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8">BipBopAll</a>), but it seems to be loading the wrong section of the stream, as the video seems to start at 29 minutes in (and so it finishes after about thirty seconds).

The code that I've used is pretty basic:

<pre><code>private void playTrack()
{ 
 player = new MediaPlayer();

 try 
 { 
 player.setDisplay(holder);
 player.setDataSource("http://devimages.apple.com/iphone/samples/bipbop
 /bipbopall.m3u8");
 player.prepare();

 } 
 catch (...) 
 {
 }
 player.start();
}
</code></pre>

Update: I've tested the same code on ICS 4.0.4, and it works correctly. Testing in 3.0.1, loads the stream at 15 minutes, and then runs correctly from there.

What can I do to ensure that the stream starts at the beginning, and plays correctly on multiple Android versions?

Or, is there a better implementation that I should use?

Android HLS Streaming - Different Android Versions Load Different Location in Stream

服务器

Android

我意识到在Android对HLS的支持程度方面存在一些问题。我正在尝试编写一个小的videoplayer演示程序(以在尽可能多的设备上工作)；最好不要使用第三方库；它可以流式传输HLS视频。注释：我目前正在JellyBean 4.2.2上测试，但可以访问其他版本我已经设法使用了MediaPlayer类，以便我的应用程序...

问Android HLS Streaming -不同的Android版本在Stream中加载不同的位置
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Android HLS Streaming -不同的Android版本在Stream中加载不同的位置EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Android HLS Streaming -不同的Android版本在Stream中加载不同的位置
EN