fix: avoid mismatch with avc1 and hvc1 codec (#400)

Author: omochi

lib/mp4/probe.js

@@ -299,7 +299,7 @@ getTracks = function(init) {
 
       if (codecBox) {
         // https://tools.ietf.org/html/rfc6381#section-3.3
-        if ((/^[a-z]vc[1-9]$/i).test(track.codec)) {
+        if ((/^[asm]vc[1-9]$/i).test(track.codec)) {
           // we don't need anything but the "config" parameter of the
           // avc1 codecBox
           codecConfig = codecBox.subarray(78);