Dear Experts,

I hope this message finds you well. I am currently encountering a couple of issues related to the usage of AMediaExtractor and MediaCodec and seeking for your guidance.

The first question is regarding the "Safe abstraction of the AMediaExtractor". I'm wondering if there is a specific reason as to why this does not exist? Are there perhaps alternative methods that could act as a suitable replacement?

The second question revolves around the running modes of MediaCodec. I found that MediaCodec operates normally in synchronous mode but not in asynchronous mode. Could you kindly guide me as where I might locate detailed usage documentation related to these modes?

I would really appreciate any help or insights you could provide on these topics.

Thank you very much for your time and assistance.

Best regards,