nightly

Show current codec in menu when auto codec is chosen (#7942)

* change negotiated codec name to negotiated codec format

Signed-off-by: 21pages <pages21@163.com>

* fallback to vp9 directly if failed to create encoder

Current fallback method is clear hwcodec config

Signed-off-by: 21pages <pages21@163.com>

* show current codec in menu when auto codec is chosen

Signed-off-by: 21pages <pages21@163.com>

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Signed-off-by: 21pages <pages21@163.com>