diff --git a/.github/workflows/build-ffmpeg.yml b/.github/workflows/build-ffmpeg.yml
index bb17aee2..9d798b3f 100644
--- a/.github/workflows/build-ffmpeg.yml
+++ b/.github/workflows/build-ffmpeg.yml
@@ -104,7 +104,7 @@ jobs:
       matrix:
         build: [ "manylinux_", "musllinux_" ]
         # arch: [ "loongarch64", "ppc64le", "riscv64", "s390x" ]
-        arch: [ "ppc64le" ]
+        arch: [ "ppc64le", "riscv64" ]
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
diff --git a/patches/ffmpeg.patch b/patches/ffmpeg.patch
index 1f3bb770..631cef2f 100644
--- a/patches/ffmpeg.patch
+++ b/patches/ffmpeg.patch
@@ -1,8 +1,8 @@
 diff --git a/configure b/configure
-index 732de59292..136347a0d2 100755
+index 8f9fb04115..a70c24378d 100755
 --- a/configure
 +++ b/configure
-@@ -1886,8 +1886,6 @@ EXTERNAL_LIBRARY_GPL_LIST="
+@@ -1996,8 +1996,6 @@ EXTERNAL_LIBRARY_GPL_LIST="
      libdvdread
      librubberband
      libvidstab
@@ -11,12 +11,24 @@ index 732de59292..136347a0d2 100755
      libxavs
      libxavs2
      libxvid
-@@ -1900,6 +1898,8 @@ EXTERNAL_LIBRARY_NONFREE_LIST="
+@@ -2010,6 +2008,8 @@ EXTERNAL_LIBRARY_NONFREE_LIST="
  "
-
+ 
  EXTERNAL_LIBRARY_VERSION3_LIST="
 +    libx264
 +    libx265
      gmp
      libaribb24
      liblensfun
+diff --git a/libavutil/riscv/cpu.c b/libavutil/riscv/cpu.c
+index 8cc91625c7..481d63a39f 100644
+--- a/libavutil/riscv/cpu.c
++++ b/libavutil/riscv/cpu.c
+@@ -36,6 +36,7 @@
+ #include <sys/hwprobe.h>
+ #elif HAVE_ASM_HWPROBE_H
+ #include <asm/hwprobe.h>
++#include <asm/unistd.h>
+ #include <sys/syscall.h>
+ #include <unistd.h>
+ 
diff --git a/scripts/build-ffmpeg.py b/scripts/build-ffmpeg.py
index 32a51139..447af2ac 100644
--- a/scripts/build-ffmpeg.py
+++ b/scripts/build-ffmpeg.py
@@ -280,11 +280,12 @@ def main():
 
     machine = platform.machine().lower()
     is_arm = machine in {"arm64", "aarch64"}
+    is_riscv = machine in {"riscv64"}
 
     use_alsa = plat == "Linux"
     # CUDA, AMF, and Intel VPL are not available on ARM64 Windows
-    use_cuda = plat in {"Linux", "Windows"} and not is_arm
-    use_amf = plat in {"Linux", "Windows"} and not is_arm
+    use_cuda = plat in {"Linux", "Windows"} and not is_arm and not is_riscv
+    use_amf = plat in {"Linux", "Windows"} and not is_arm and not is_riscv
 
     # Use Intel VPL (Video Processing Library) if supported to enable Intel QSV (Quick Sync Video)
     # hardware encoders/decoders on modern integrated and discrete Intel GPUs.