Constant AV_PKT_DATA_NEW_EXTRADATA

pub const AV_PKT_DATA_NEW_EXTRADATA: u32 = 1; // 1u32

The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was changed and the receiving side should act upon it appropriately. The new extradata is embedded in the side data buffer and should be immediately used for processing the current frame or packet.