视频场景编解码低功耗规则

• 视频应用需使用视频硬件编解码器。
• 视频场景应使用专用硬件解码器(VDEC)，其功耗效率显著优于CPU软解码。因此，应使用平台的视频硬件编解码器进行视频播放。

调用OH_AVCodec相关接口，使用视频硬件编解码器处理视频。

// To create a decoder using a codec name, if the application has special requirements, such as selecting a decoder that supports a certain resolution specification, 
// the capability can be queried first, and then the decoder can be created based on the codec name.
OH_AVCapability *capability = OH_AVCodec_GetCapability(OH_AVCODEC_MIMETYPE_VIDEO_AVC, false);
const char *name = OH_AVCapability_GetName(capability);
// Create a decoder through mimetype
// Hard solution: Create H264 decoder. When there are multiple optional decoders, the system will create the most suitable decoder
OH_AVCodec *videoDec = OH_VideoDecoder_CreateByMime(OH_AVCODEC_MIMETYPE_VIDEO_AVC);
// Hard solution: Create H265 decoder
OH_AVCodec *videoDecH = OH_VideoDecoder_CreateByMime(OH_AVCODEC_MIMETYPE_VIDEO_HEVC);