The judiciary said on Tuesday it will start webcasting some proceedings at Hong Kong's top court from April 1, as part of a pilot scheme.

It said certain types of Court of Final Appeal hearings will not be part of the two-year scheme.

These include cases involving national security, commercial confidentiality, children or the mentally disabled, as well as those deemed to be "highly politically charged" or "high-profile public order cases".

"Open justice is a key to maintaining public confidence in the judicial system and upholding the rule of law," the judiciary said in a statement.

"Live broadcasting of judicial proceedings beyond court premises will enhance the transparency of court procedures and strengthen public confidence in the judicial process."

People will be able to watch the livestreams on the top court's website, but they are not allowed to record them or use the footage for any purpose, it said, adding that the media is no exception to this rule.

Hearings will be kept online for a month.

The upcoming pilot scheme comes after the top court conducted four webcast test runs last year.