在 Android TV 上升级 Android WebView 后，hls 264 视频不再播放答案

【问题标题】：After upgrading Android WebView on Android TV, hls 264 videos are not being played anymore在 Android TV 上升级 Android WebView 后，hls 264 视频不再播放
【发布时间】：2020-05-28 14:23:39
【问题描述】：

将 Android WebView 升级到 80.0.3987.99 版本后，Android TV 不再在基于 WebView 的应用 (ionic 4) 上播放 HLS 直播视频 (h264)。

操作系统：Android TV 9（Android TV 独有）内核版本：4.9.113

重现步骤：

(1) 只需尝试在使用 WebView 80.0.3987.99 的 Android TV 设备上基于 WebView 的应用上打开 HLS h264 实时视频（m3u8 清单）。您可以使用随附的 APK。

预期结果：视频未播放。

将 WebView 降级为次要版本（例如，75.0.03770.143）并重新启动应用程序，视频实际上播放没有问题。

APK下载测试：

https://bugs.chromium.org/p/chromium/issues/attachment?aid=433346&signed_aid=j3jgAQISOSoCW4DBQcRFXw==

登录 logcat：

2020-02-12 15:57:40.206 24233-24336/com.eninetworks.enitvtester I/cr_MediaCodecBridge: create MediaCodec video decoder, mime video/avc

2020-02-12 15:57:40.277 24233-24349/com.eninetworks.enitvtester I/OMXClient: IOmx service obtained

2020-02-12 15:57:40.373 24233-24348/com.eninetworks.enitvtester I/MediaCodec: MediaCodec will operate in async mode
2020-02-12 15:57:40.382 24233-24348/com.eninetworks.enitvtester D/SurfaceUtils: connecting to surface 0xd1a7f008, reason connectToSurface

2020-02-12 15:57:40.383 24233-24348/com.eninetworks.enitvtester I/MediaCodec: [OMX.amlogic.avc.decoder.awesome] setting surface generation to 24814593

2020-02-12 15:57:40.383 24233-24348/com.eninetworks.enitvtester D/SurfaceUtils: disconnecting from surface 0xd1a7f008, reason connectToSurface(reconnect)

2020-02-12 15:57:40.383 24233-24348/com.eninetworks.enitvtester D/SurfaceUtils: connecting to surface 0xd1a7f008, reason connectToSurface(reconnect)

2020-02-12 15:57:40.386 24233-24349/com.eninetworks.enitvtester I/AmAVUtils: AmAVUtils::getComponentRole isEncoder :0 mime:video/avc 

2020-02-12 15:57:40.386 24233-24349/com.eninetworks.enitvtester V/AVUtils: AVUtils::getComponentRole

2020-02-12 15:57:40.393 24233-24349/com.eninetworks.enitvtester E/ACodec: [OMX.amlogic.avc.decoder.awesome] setPortMode on output to DynamicANWBuffer failed w/ err -2147483648

2020-02-12 15:57:40.403 24233-24349/com.eninetworks.enitvtester I/AmAVUtils: AmAVUtils::isAudioExtendFormat input = video/avc


2020-02-12 15:57:40.470 24233-24349/com.eninetworks.enitvtester D/SurfaceUtils: disconnecting from surface 0xd1a7f008, reason setNativeWindowSizeFormatAndUsage

2020-02-12 15:57:40.470 24233-24349/com.eninetworks.enitvtester D/SurfaceUtils: connecting to surface 0xd1a7f008, reason setNativeWindowSizeFormatAndUsage

2020-02-12 15:57:40.470 24233-24349/com.eninetworks.enitvtester D/SurfaceUtils: set up nativeWindow 0xd1a7f008 for 1920x1080, color 0x11, rotation 0, usage 0x402b00

2020-02-12 15:57:40.471 24233-24349/com.eninetworks.enitvtester W/ACodec: [OMX.amlogic.avc.decoder.awesome] setting nBufferCountActual to 10 failed: -1010

2020-02-12 15:57:40.472 24233-24349/com.eninetworks.enitvtester W/ACodec: [OMX.amlogic.avc.decoder.awesome] setting nBufferCountActual to 9 failed: -1010

2020-02-12 15:57:40.473 24233-24349/com.eninetworks.enitvtester W/ACodec: [OMX.amlogic.avc.decoder.awesome] setting nBufferCountActual to 8 failed: -1010

2020-02-12 15:57:40.475 24233-24349/com.eninetworks.enitvtester W/ACodec: [OMX.amlogic.avc.decoder.awesome] setting nBufferCountActual to 7 failed: -1010

2020-02-12 15:57:40.475 24233-24349/com.eninetworks.enitvtester E/ACodec: Failed to allocate buffers after transitioning to IDLE state (error 0xfffffc0e)

2020-02-12 15:57:40.475 24233-24349/com.eninetworks.enitvtester E/ACodec: signalError(omxError 0x80001001, internalError -1010)

2020-02-12 15:57:40.478 24233-24348/com.eninetworks.enitvtester E/MediaCodec: Codec reported err 0xfffffc0e, actionCode 0, while in state 5

2020-02-12 15:57:40.478 24233-24348/com.eninetworks.enitvtester E/libc: Access denied finding property "media.metrics.enabled"

2020-02-12 15:57:40.492 24233-24349/com.eninetworks.enitvtester W/AHierarchicalStateMachine: Warning message AMessage(what = 'omxI') = {
      int32_t type = 0
      int32_t event = 0
      int32_t data1 = 0
      int32_t data2 = 1
    } unhandled in root state.

2020-02-12 15:57:40.506 24233-24348/com.eninetworks.enitvtester D/SurfaceUtils: disconnecting from surface 0xd1a7f008, reason disconnectFromSurface

**2020-02-12 15:57:40.518 24233-24336/com.eninetworks.enitvtester E/cr_MediaCodecBridge: Cannot start the media codec**

android.media.MediaCodec$CodecException: start failed
at android.media.MediaCodec.native_start(Native Method)
at android.media.MediaCodec.start(MediaCodec.java:2068)
at org.chromium.media.MediaCodecBridge.c(PG:8)
at org.chromium.media.MediaCodecBridgeBuilder.createVideoDecoder(PG:68)

2020-02-12 15:57:40.521 24233-24336/com.eninetworks.enitvtester W/cr_MediaCodecBridge: Releasing: OMX.amlogic.avc.decoder.awesome

2020-02-12 15:57:40.528 24233-24336/com.eninetworks.enitvtester W/cr_MediaCodecBridge: Codec released

2020-02-12 15:57:40.545 24233-24282/com.eninetworks.enitvtester D/AudioTrack: stop() called with 16940 frames delivered

2020-02-12 15:57:45.549 24233-24282/com.eninetworks.enitvtester E/libc: Access denied finding property "media.metrics.enabled"

2020-02-12 15:57:45.544 24233-24233/com.eninetworks.enitvtester W/AudioThread: type=1400 audit(0.0:48242): avc: denied { read } for name="u:object_r:media_prop:s0" dev="tmpfs" ino=2183 scontext=u:r:untrusted_app:s0:c47,c256,c512,c768 tcontext=u:object_r:media_prop:s0 tclass=file permissive=0

【问题讨论】：

您不是唯一遇到此问题的人。我也在面对。甚至 Facebook TV 应用程序也无法使用此 webview 播放视频：/。我很高兴看到解决方案

标签： webview ionic4 android-tv

【解决方案1】：

所以，我取得了一点进展。 h.264 在 Android TV 上的最新 webview 存在问题。它甚至在前一个上有。我玩过 ffmpeg，显然 h.265 main 4.1 编码的 mp4 并没有导致这个问题。对我来说，新编解码器仍然存在three.js 纹理问题。尝试转换视频，也许它会给你带来好运和工作:)

【讨论】：

【解决方案2】：

对于那些有这种行为的人，WebKit 80 中存在一个错误，该错误已被接受，并在计划于 3 月 17 日发布的版本中得到修复。

我向 Chromium 团队报告了该错误，您可以在此处阅读更多信息：

https://bugs.chromium.org/p/chromium/issues/detail?id=1051705

【讨论】：