如何使用flutters video_player或chewie或video_viewer插件播放m3u8链接？

Question

我注意到使用flutters video_player插件的一些链接在iOS设备上不起作用，但是如果我使用下面的示例链接，它在所有设备上都可以正常工作，即使在android和iOS上也是如此。

https://sfux-ext.sfux.info/hls/chapter/105/1588724110/1588724110.m3u8

以下链接不适用于 iOS 设备，但适用于 Android 设备，

https://5421175365ea3.streamlock.net/live/smil:switch.smil/playlist.m3u8

https://dcunilive28-lh.akamaihd.net/i/dclive_1@533583/master.m3u8

有什么线索可以让它发挥作用吗？

Answer 1

如果您使用的是 video_player，您应该注释下面的 ios 代码

// The player may be initialized but still needs to determine the duration.
if ([self duration] == 0) {
  return;
}

在第 315 行

YOUR_SDK_FOLDER\flutter\.pub-cache\hosted\pub.dartlang.org\video_player-your_player_version_no\Classes\FLTVideoPlayerPlugin.m

似乎实时 hls 流总是返回 duration=0

Answer 2

您的 HLS 播放列表非常简陋，有很多问题，最大的问题是缺少编解码器信息。

使用Apples HTTP Livestreaming 工具验证您的播放列表。

第一个链接的摘录：

Must Fix Issues
1. Measured peak bitrate compared to master playlist declared value exceeds error tolerance

    Master Playlist Stream Definition for All Variants

2. I-frame playlists ( EXT-X-I-FRAME-STREAM-INF ) MUST be provided to support scrubbing and scanning UI

    Master Playlist

3. Your EXT-X-STREAM-INF and EXT-X-I-FRAME-STREAM-INF tags MUST always provide CODECS attribute

    Master Playlist Stream Definition for All Variants

4. Your EXT-X-STREAM-INF and EXT-X-I-FRAME-STREAM-INF tags MUST always provide the RESOLUTION attribute if the rendition(s) include video

    Master Playlist Stream Definition for All Variants

5. You MUST include the AVERAGE-BANDWIDTH attribute

    Master Playlist Stream Definition for All Variants

6. Each EXT-X-STREAM-INF tag MUST have a FRAME-RATE attribute

    Master Playlist Stream Definition for All Variants

7. The server MUST deliver playlists using gzip content-encoding

    All Variants
    Master Playlist

8. The EXT-X-PROGRAM-DATE-TIME tag MUST be present in every live/linear media playlist

    All Variants

9. You MUST provide at least 6 segments in a live/linear playlist

    All Variants

10. If EXT-X-INDEPENDENT-SEGMENTS is not in master playlist, then you MUST use the EXT-X-INDEPENDENT-SEGMENTS tag in all video media playlists

    All Variants

所有这些问题都会阻止 HLS 在 Apple 设备上播放，Android 可能会更宽松一些。