diff --git a/bin/hooks/README.md b/bin/hooks/README.md
index 04574248e..4cb6c9f22 100644
--- a/bin/hooks/README.md
+++ b/bin/hooks/README.md
@@ -36,6 +36,7 @@ these are `--xiu` hooks; unlike `xbu` and `xau` (which get executed on every sin
 * [reject-and-explain.py](reject-and-explain.py) shows a custom error-message when it rejects an upload
 * [reject-ramdisk.py](reject-ramdisk.py) rejects the upload if the destination is a ramdisk
   * this hook uses the `I` flag which makes it 140x faster, but if the plugin has a bug it may crash copyparty
+* [phonecam-sorter.py](phonecam-sorter.py) is for syncing backups of phone gallery into year/month folders
 
 
 # more upload stuff
diff --git a/bin/hooks/phonecam-sorter.py b/bin/hooks/phonecam-sorter.py
new file mode 100755
index 000000000..c99895121
--- /dev/null
+++ b/bin/hooks/phonecam-sorter.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+
+import os
+import re
+import sys
+
+
+_ = r"""
+purpose:
+  sync/backup phone gallery (pics/vids) to a nas which runs copyparty
+
+what this hook does:
+  redirect photos/videos into date-based folders, named "%Y%m" according
+  to filename; that is, "/cam/sort/DCIM/D027/PXL_20250828_202820075.jpg"
+  will be redirected to "/cam/pics/ts/202508/PXL_20250828_202820075.jpg"
+
+requires this setup on the server:
+  * /cam/ is a volume with all your pics/vids
+  * the phone must upload to somewhere below /cam/sort/
+  * photo/video filenames match the following regex:
+     ^[a-z]{3,4}_([0-9]{6})[0-9]{2}_[0-9]{6}.*\.(jpg|mp4)$
+  * so for example these filenames are OK:
+    * PXL_20250828_202820075.jpg
+    * IMG_20251123_202405.jpg
+    * PANO_20180421_121245_03.t8o5.jpg
+    * VID_20250307_220250-crf34.mp4
+
+example server config as a volflag:
+  -v /mnt/thedisk/gallery:cam:rwa,ed:c,e2ds,xbu=I,~/hooks/phonecam-sorter.py
+
+example server config in a copyparty config file:
+  [/cam]
+    /mnt/thedisk/gallery
+    accs:
+      rwa: ed
+    flags:
+      e2ds
+      xbu: I,~/hooks/phonecam-sorter.py
+
+command to run on phone to sync to server, sending new files only:
+  ~/bin/u2c.py -te homenas.ca -a '$homenas.pw' https://10.0.0.2:3923/cam/sort/ ~/storage/dcim/Camera
+
+the phone-command above assumes this setup on the phone:
+* termux or another linux-like thing with access to gallery files
+* homenas.ca is a textfile with the server's CA certificate
+* homenas.pw is a textfile with the copyparty password inside
+* ~/storage/dcim/ exists; if not, run termux-setup-storage
+* ~/bin/u2c.py exists; if not, curl -LO https://10.0.0.2:3923/.cpr/a/u2c.py && chmod 755 u2c.py
+
+unfortunate consequences:
+* due to the redirection, u2c -z doesn't do anything, so every local
+   file is hashed every time, wasting some time and cpu on the phone
+   but otoh certainly avoids corruption on either side (phone/server)
+
+"""
+
+
+def main(inf):
+    log = inf["log"]
+    vdir, fn = os.path.split(inf["vp"])
+    if not vdir.startswith("cam/sort"):
+        return {"rc": 0}  # 2nd call after 1st reloc; already done
+
+    m = re.match(r"^[a-z]{3,4}_([0-9]{6})[0-9]{2}_[0-9]{6}.*\.(jpg|mp4)$", fn.lower())
+    if not m:
+        return {"rc": 0}  # not recognized; write to original path in /cam/sort/
+
+    ym, ext = m.groups()
+    if ext == "jpg":
+        dst = f"/cam/pics/ts/{ym}/"
+    elif ext == "mp4":
+        dst = f"/cam/vids/ts/{ym}/"
+    else:
+        return {"rc": 0}
+
+    ap = "%s%s" % (inf["ap"].split("/cam/sort/")[0], dst)
+    if not os.path.isdir(ap):
+        os.makedirs(ap)
+
+    ret = {"rc": 0, "reloc": {"vp": dst}}
+    return ret
+
+
+if __name__ == "__main__":
+    main()