Revert "vpx use webrtc parameter"

This reverts commit d23fd902d7.

libs/scrap/examples/record-screen.rs

@@ -101,8 +101,10 @@ fn main() -> io::Result<()> {
     let mut vpx = vpx_encode::VpxEncoder::new(EncoderCfg::VPX(vpx_encode::VpxEncoderConfig {
         width,
         height,
+        timebase: [1, 1000],
         bitrate: args.flag_bv,
         codec: vpx_codec,
+        num_threads: 0,
     }))
     .unwrap();