diff --git a/packager/media/filters/h264_parser.cc b/packager/media/filters/h264_parser.cc
index ef51ea4129..afc91ad9ef 100644
--- a/packager/media/filters/h264_parser.cc
+++ b/packager/media/filters/h264_parser.cc
@@ -32,25 +32,12 @@ bool ExtractResolutionFromDecoderConfig(const uint8_t* avc_decoder_config_data,
   RCHECK(reader.Read1(&value));
   RCHECK(value == 1);
 
-  // avc profile. No value check.
-  RCHECK(reader.Read1(&value));
+  // Skip avc profile, profile compatibility, avc level, and length size.
+  RCHECK(reader.SkipBytes(4));
 
-  // profile compatibility. No value check.
+  // Reserved and num sps.
   RCHECK(reader.Read1(&value));
 
-  // avc level indication. No value check.
-  RCHECK(reader.Read1(&value));
-
-  // reserved and length sized minus one.
-  RCHECK(reader.Read1(&value));
-  // upper 6 bits are reserved and must be 111111.
-  RCHECK((value & 0xFC) == 0xFC);
-
-  // reserved and num sps.
-  RCHECK(reader.Read1(&value));
-  // upper 3 bits are reserved for 0b111.
-  RCHECK((value & 0xE0) == 0xE0);
-
   const uint8_t num_sps = value & 0x1F;
   if (num_sps < 1) {
     LOG(ERROR) << "No SPS found.";
diff --git a/packager/media/formats/mp4/box_definitions.cc b/packager/media/formats/mp4/box_definitions.cc
index 2f0e2fb82b..89d41fe6da 100644
--- a/packager/media/formats/mp4/box_definitions.cc
+++ b/packager/media/formats/mp4/box_definitions.cc
@@ -902,12 +902,11 @@ bool AVCDecoderConfigurationRecord::ParseData(BufferReader* reader) {
          reader->Read1(&avc_level));
 
   uint8_t length_size_minus_one;
-  RCHECK(reader->Read1(&length_size_minus_one) &&
-         (length_size_minus_one & 0xfc) == 0xfc);
+  RCHECK(reader->Read1(&length_size_minus_one));
   length_size = (length_size_minus_one & 0x3) + 1;
 
   uint8_t num_sps;
-  RCHECK(reader->Read1(&num_sps) && (num_sps & 0xe0) == 0xe0);
+  RCHECK(reader->Read1(&num_sps));
   num_sps &= 0x1f;
 
   sps_list.resize(num_sps);