Predator could not provide any possible suspects.

From the below CL observing some changes related to MP4, hence suspecting the same
https://chromium.googlesource.com/chromium/src/+log/0a707c2a1200365fa32192a8728c81b10a86824d..163cd2ca687a58b9918a7e5b4f696322a2286f79?pretty=fuller&n=10000

Suspect CL: https://chromium.googlesource.com/chromium/src/+/0b378819e3b3925e0eabd34e73d3972a19b4a46d

wolenetz@ -- Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Note: Please duplicate if this is similar to  issue 806580 

Thanks!

ClusterFuzz has detected this issue as fixed in range 555126:555147.

Detailed report: https://clusterfuzz.com/testcase?key=5992267236769792

Fuzzer: libFuzzer_mediasource_MP4_AVC1_pipeline_integration_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Out-of-memory (exceeds 2048 MB)
Crash Address: 
Crash State:
  mediasource_MP4_AVC1_pipeline_integration_fuzzer
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=497057:497112
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=555126:555147

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5992267236769792

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 5992267236769792 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.