diff --git a/tensorrt_llm/media/encoding.py b/tensorrt_llm/media/encoding.py
index 0e2e32490909..5a5484f79e1f 100644
--- a/tensorrt_llm/media/encoding.py
+++ b/tensorrt_llm/media/encoding.py
@@ -181,7 +181,7 @@ def encode_video(
                     stdout=subprocess.PIPE,
                     stderr=subprocess.PIPE,
                 )
-                raw_frames = video_np.tobytes()
+                raw_frames = memoryview(video_np.reshape(-1))
                 _, stderr = process.communicate(input=raw_frames)
                 if process.returncode != 0:
                     raise RuntimeError(f"ffmpeg encoding failed: {stderr.decode()}")