哪些android设备/解码器支持自适应视频播放 [英] What android devices/decoder has supported adaptive video playback

问题描述

我已经在Nexus 5上进行了测试

I've tested on Nexus 5 that

codecInfo.isFeatureSupported(MediaCodecInfo.CodecCapabilities.FEATURE_AdaptivePlayback)

返回假.

有人知道什么芯片组/软件编解码器支持该功能吗?

Does anyone know what chipset/software codec has supported the feature?

https://developer.android.com/reference/android/media/MediaCodecInfo.CodecCapabilities.html#FEATURE_AdaptivePlayback

谢谢

推荐答案

KK MR1之后的大多数Nexus设备都支持此功能.请注意，它仅是硬件视频解码器.

This is supported on most Nexus devices past KK MR1. Note, that it is HW video decoders only.

Nexus 5(KK MR1)://高通Snapdragon 800

Nexus 5 (KK MR1): // Qualcomm Snapdragon 800

• OMX.qcom.video.decoder.avc
• OMX.qcom.video.decoder.mpeg4
• OMX.qcom.video.decoder.h263
• OMX.qcom.video.decoder.vp8

Nexus 4和Nexus 7 v2013(KK MR1)://高通Snapdragon S4 Pro APQ8064

Nexus 4 and Nexus 7 v2013 (KK MR1): // Qualcomm Snapdragon S4 Pro APQ8064

• OMX.qcom.video.decoder.avc
• OMX.qcom.video.decoder.mpeg4
• OMX.qcom.video.decoder.h263

Nexus 10(KK MR1)//三星Exynos 5250

Nexus 10 (KK MR1) // Samsung Exynos 5250

• OMX.Exynos.MPEG4.Decoder
• OMX.Exynos.H263.Decoder
• OMX.Exynos.AVC.Decoder

值得注意的例外:

• Nexus 7 v2012(KK MR1中没有编解码器支持它)

对于非Nexus设备，您需要自己查询编解码器.这是我为查询所做的代码段.

For non-Nexus devices you need to query the codecs yourself. Here is my code-snippet that I did for the query.

int numCodecs = MediaCodecList.getCodecCount();
for (int i = 0; i < numCodecs; i++) {
    MediaCodecInfo codecInfo = MediaCodecList.getCodecInfoAt(i);
    String name = codecInfo.getName();
    Log.i(TAG, "Examinig " + (codecInfo.isEncoder() ? "encoder" : "decoder") + ": " + name);
    for(String type: codecInfo.getSupportedTypes()) {
        boolean ap = codecInfo.getCapabilitiesForType(type).isFeatureSupported(MediaCodecInfo.CodecCapabilities.FEATURE_AdaptivePlayback);
        Log.i(TAG, "supports adaptive playback: " + ap);
    }
}

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