diff --git a/configure b/configure
index 7ffbb85e21..3a97610209 100755
--- a/configure
+++ b/configure
@@ -2272,6 +2272,7 @@ SYSTEM_FUNCS="
     fcntl
     getaddrinfo
     getauxval
+    getenv
     gethrtime
     getopt
     GetModuleHandle
diff --git a/libavutil/getenv_utf8.h b/libavutil/getenv_utf8.h
new file mode 100644
index 0000000000..c10291adfc
--- /dev/null
+++ b/libavutil/getenv_utf8.h
@@ -0,0 +1,86 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_GETENV_UTF8_H
+#define AVUTIL_GETENV_UTF8_H
+
+#include <stdlib.h>
+
+#include "config.h"
+#include "mem.h"
+
+#if HAVE_GETENV && defined(_WIN32)
+
+#include "libavutil/wchar_filename.h"
+
+static inline char *getenv_utf8(const char *varname)
+{
+    wchar_t *varname_w, *var_w;
+    char *var;
+
+    if (utf8towchar(varname, &varname_w))
+        return NULL;
+    if (!varname_w)
+        return NULL;
+
+    var_w = _wgetenv(varname_w);
+    av_free(varname_w);
+
+    if (!var_w)
+        return NULL;
+    if (wchartoutf8(var_w, &var))
+        return NULL;
+
+    return var;
+
+    // No CP_ACP fallback compared to other *_utf8() functions:
+    // non UTF-8 strings must not be returned.
+}
+
+static inline void freeenv_utf8(char *var)
+{
+    av_free(var);
+}
+
+static inline char *getenv_dup(const char *varname)
+{
+    return getenv_utf8(varname);
+}
+
+#else
+
+static inline char *getenv_utf8(const char *varname)
+{
+    return getenv(varname);
+}
+
+static inline void freeenv_utf8(char *var)
+{
+}
+
+static inline char *getenv_dup(const char *varname)
+{
+    char *var = getenv(varname);
+    if (!var)
+        return NULL;
+    return av_strdup(var);
+}
+
+#endif // HAVE_GETENV && defined(_WIN32)
+
+#endif // AVUTIL_GETENV_UTF8_H
diff --git a/libavutil/wchar_filename.h b/libavutil/wchar_filename.h
index f36d9dfea3..08de073ed7 100644
--- a/libavutil/wchar_filename.h
+++ b/libavutil/wchar_filename.h
@@ -20,6 +20,8 @@
 #define AVUTIL_WCHAR_FILENAME_H
 
 #ifdef _WIN32
+
+#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include "mem.h"
 
@@ -41,6 +43,57 @@ static inline int utf8towchar(const char *filename_utf8, wchar_t **filename_w)
     return 0;
 }
 
+av_warn_unused_result
+static inline int wchartocp(unsigned int code_page, const wchar_t *filename_w,
+                            char **filename)
+{
+    DWORD flags = code_page == CP_UTF8 ? WC_ERR_INVALID_CHARS : 0;
+    int num_chars = WideCharToMultiByte(code_page, flags, filename_w, -1,
+                                        NULL, 0, NULL, NULL);
+    if (num_chars <= 0) {
+        *filename = NULL;
+        return 0;
+    }
+    *filename = av_malloc_array(num_chars, sizeof *filename);
+    if (!*filename) {
+        errno = ENOMEM;
+        return -1;
+    }
+    WideCharToMultiByte(code_page, flags, filename_w, -1,
+                        *filename, num_chars, NULL, NULL);
+    return 0;
+}
+
+av_warn_unused_result
+static inline int wchartoutf8(const wchar_t *filename_w, char **filename)
+{
+    return wchartocp(CP_UTF8, filename_w, filename);
+}
+
+av_warn_unused_result
+static inline int wchartoansi(const wchar_t *filename_w, char **filename)
+{
+    return wchartocp(CP_ACP, filename_w, filename);
+}
+
+av_warn_unused_result
+static inline int utf8toansi(const char *filename_utf8, char **filename)
+{
+    wchar_t *filename_w = NULL;
+    int ret = -1;
+    if (utf8towchar(filename_utf8, &filename_w))
+        return -1;
+
+    if (!filename_w) {
+        *filename = NULL;
+        return 0;
+    }
+
+    ret = wchartoansi(filename_w, filename);
+    av_free(filename_w);
+    return ret;
+}
+
 /**
  * Checks for extended path prefixes for which normalization needs to be skipped.
  * see .NET6: PathInternal.IsExtended()