diff --git a/services/mediacodec/seccomp_policy/mediacodec-arm.policy b/services/mediacodec/seccomp_policy/mediacodec-arm.policy
index 0aa5acc..9bdd4c8 100644
--- a/services/mediacodec/seccomp_policy/mediacodec-arm.policy
+++ b/services/mediacodec/seccomp_policy/mediacodec-arm.policy
@@ -14,6 +14,7 @@
 mmap2: 1
 getrandom: 1
 memfd_create: 1
+ftruncate: 1
 ftruncate64: 1
 
 # mremap: Ensure |flags| are (MREMAP_MAYMOVE | MREMAP_FIXED) TODO: Once minijail
diff --git a/services/mediacodec/seccomp_policy/mediacodec-x86.policy b/services/mediacodec/seccomp_policy/mediacodec-x86.policy
index 6d88c84..a48cedb 100644
--- a/services/mediacodec/seccomp_policy/mediacodec-x86.policy
+++ b/services/mediacodec/seccomp_policy/mediacodec-x86.policy
@@ -55,6 +55,9 @@
 nanosleep: 1
 sched_setscheduler: 1
 uname: 1
+memfd_create: 1
+ftruncate: 1
+ftruncate64: 1
 
 # Required by AddressSanitizer
 gettid: 1
diff --git a/services/mediacodec/seccomp_policy/mediaswcodec-arm.policy b/services/mediacodec/seccomp_policy/mediaswcodec-arm.policy
index b9adbd9..02cedba 100644
--- a/services/mediacodec/seccomp_policy/mediaswcodec-arm.policy
+++ b/services/mediacodec/seccomp_policy/mediaswcodec-arm.policy
@@ -22,6 +22,7 @@
 mprotect: arg2 in ~PROT_EXEC || arg2 in ~PROT_WRITE
 mmap2: arg2 in ~PROT_EXEC || arg2 in ~PROT_WRITE
 memfd_create: 1
+ftruncate: 1
 ftruncate64: 1
 
 # mremap: Ensure |flags| are (MREMAP_MAYMOVE | MREMAP_FIXED) TODO: Once minijail
diff --git a/services/mediacodec/seccomp_policy/mediaswcodec-arm64.policy b/services/mediacodec/seccomp_policy/mediaswcodec-arm64.policy
index 7abb432..78ecaf5 100644
--- a/services/mediacodec/seccomp_policy/mediaswcodec-arm64.policy
+++ b/services/mediacodec/seccomp_policy/mediaswcodec-arm64.policy
@@ -27,6 +27,7 @@
 newfstatat: 1
 fstatfs: 1
 memfd_create: 1
+ftruncate: 1
 ftruncate64: 1
 
 # mremap: Ensure |flags| are (MREMAP_MAYMOVE | MREMAP_FIXED) TODO: Once minijail