diff --git a/libavutil/hwcontext_cuda.c b/libavutil/hwcontext_cuda.c
index 58ffc81378..3773cd9eb8 100644
--- a/libavutil/hwcontext_cuda.c
+++ b/libavutil/hwcontext_cuda.c
@@ -93,7 +93,7 @@ static void cuda_buffer_free(void *opaque, uint8_t *data)
     CHECK_CU(cu->cuCtxPopCurrent(&dummy));
 }
 
-static AVBufferRef *cuda_pool_alloc(void *opaque, int size)
+static AVBufferRef *cuda_pool_alloc(void *opaque, buffer_size_t size)
 {
     AVHWFramesContext        *ctx = opaque;
     AVHWDeviceContext *device_ctx = ctx->device_ctx;
diff --git a/libavutil/hwcontext_d3d11va.c b/libavutil/hwcontext_d3d11va.c
index c8ae58f908..2a3549ebd8 100644
--- a/libavutil/hwcontext_d3d11va.c
+++ b/libavutil/hwcontext_d3d11va.c
@@ -202,7 +202,7 @@ static AVBufferRef *d3d11va_alloc_single(AVHWFramesContext *ctx)
     return wrap_texture_buf(tex, 0);
 }
 
-static AVBufferRef *d3d11va_pool_alloc(void *opaque, int size)
+static AVBufferRef *d3d11va_pool_alloc(void *opaque, buffer_size_t size)
 {
     AVHWFramesContext        *ctx = (AVHWFramesContext*)opaque;
     D3D11VAFramesContext       *s = ctx->internal->priv;
diff --git a/libavutil/hwcontext_dxva2.c b/libavutil/hwcontext_dxva2.c
index 64366cea89..33b3dc80ff 100644
--- a/libavutil/hwcontext_dxva2.c
+++ b/libavutil/hwcontext_dxva2.c
@@ -124,7 +124,7 @@ static void dxva2_pool_release_dummy(void *opaque, uint8_t *data)
     // released in dxva2_frames_uninit()
 }
 
-static AVBufferRef *dxva2_pool_alloc(void *opaque, int size)
+static AVBufferRef *dxva2_pool_alloc(void *opaque, buffer_size_t size)
 {
     AVHWFramesContext      *ctx = (AVHWFramesContext*)opaque;
     DXVA2FramesContext       *s = ctx->internal->priv;
diff --git a/libavutil/hwcontext_opencl.c b/libavutil/hwcontext_opencl.c
index cd8638abbb..ee814602b2 100644
--- a/libavutil/hwcontext_opencl.c
+++ b/libavutil/hwcontext_opencl.c
@@ -1617,7 +1617,7 @@ static void opencl_pool_free(void *opaque, uint8_t *data)
     av_free(desc);
 }
 
-static AVBufferRef *opencl_pool_alloc(void *opaque, int size)
+static AVBufferRef *opencl_pool_alloc(void *opaque, buffer_size_t size)
 {
     AVHWFramesContext      *hwfc = opaque;
     AVOpenCLDeviceContext *hwctx = hwfc->device_ctx->hwctx;
diff --git a/libavutil/hwcontext_qsv.c b/libavutil/hwcontext_qsv.c
index 35a944f8f8..30b0d81f84 100644
--- a/libavutil/hwcontext_qsv.c
+++ b/libavutil/hwcontext_qsv.c
@@ -194,7 +194,7 @@ static void qsv_pool_release_dummy(void *opaque, uint8_t *data)
 {
 }
 
-static AVBufferRef *qsv_pool_alloc(void *opaque, int size)
+static AVBufferRef *qsv_pool_alloc(void *opaque, buffer_size_t size)
 {
     AVHWFramesContext    *ctx = (AVHWFramesContext*)opaque;
     QSVFramesContext       *s = ctx->internal->priv;
diff --git a/libavutil/hwcontext_vaapi.c b/libavutil/hwcontext_vaapi.c
index 2227d6ed69..4b81bd1f67 100644
--- a/libavutil/hwcontext_vaapi.c
+++ b/libavutil/hwcontext_vaapi.c
@@ -464,7 +464,7 @@ static void vaapi_buffer_free(void *opaque, uint8_t *data)
     }
 }
 
-static AVBufferRef *vaapi_pool_alloc(void *opaque, int size)
+static AVBufferRef *vaapi_pool_alloc(void *opaque, buffer_size_t size)
 {
     AVHWFramesContext     *hwfc = opaque;
     VAAPIFramesContext     *ctx = hwfc->internal->priv;
diff --git a/libavutil/hwcontext_vdpau.c b/libavutil/hwcontext_vdpau.c
index 8f014eaba7..a6fd7126f3 100644
--- a/libavutil/hwcontext_vdpau.c
+++ b/libavutil/hwcontext_vdpau.c
@@ -225,7 +225,7 @@ static void vdpau_buffer_free(void *opaque, uint8_t *data)
     device_priv->surf_destroy(surf);
 }
 
-static AVBufferRef *vdpau_pool_alloc(void *opaque, int size)
+static AVBufferRef *vdpau_pool_alloc(void *opaque, buffer_size_t size)
 {
     AVHWFramesContext             *ctx = opaque;
     VDPAUFramesContext           *priv = ctx->internal->priv;
diff --git a/libavutil/hwcontext_vulkan.c b/libavutil/hwcontext_vulkan.c
index e835ffe90e..2e3faaaa1a 100644
--- a/libavutil/hwcontext_vulkan.c
+++ b/libavutil/hwcontext_vulkan.c
@@ -1693,7 +1693,7 @@ static void try_export_flags(AVHWFramesContext *hwfc,
     }
 }
 
-static AVBufferRef *vulkan_pool_alloc(void *opaque, int size)
+static AVBufferRef *vulkan_pool_alloc(void *opaque, buffer_size_t size)
 {
     int err;
     AVVkFrame *f;