我读到Apple要求流式HTTP直播以满足此要求
When authoring your content for HTTP Live Streaming over cellular, you must provide a baseline stream with a maximum measured bitrate of 192 kbps in addition to any other higher bitrate streams.
我使用AWS Elastic Transcoder使用预设的HLS 1k转换视频文件，这表示这是比特率
Bit Rate
872
我使用过Apple的mediafilevalidator，这是输出
Discontinuity: sequence: 0, parsed segment count: 3 of 3, duration: 9.067 sec, average: 1013.71 kb/s, max: 1176.55 kb/s
Track ID: 1
Audio Codec: AAC-LC
Audio sample rate: 44100 Hz
Audio channel layout: Stereo (L R)
Track ID: 2
Video Codec: avc1
Video profile: Main
Video level: 3.1
Video resolution: 243x432
Video average IDR interval: 3.000000, Standard deviation: 0.000000
Video frame rate: 30.000
HLS 1M流是否符合Apple的192kpbs要求？我无法根据信息告诉我。
如果HLS 1k满足1MB / s，那么HLS 400k满足400kpbs，那么没有更低的选项，我需要包含纯音频流吗？
谢谢！