diff --git a/README.md b/README.md
index f4ad79fc..1988ab3d 100644
--- a/README.md
+++ b/README.md
@@ -70,7 +70,7 @@ running the sfx without arguments (for example doubleclicking it on Windows) wil
 
 some recommended options:
 * `-e2dsa` enables general file indexing, see [search configuration](#search-configuration)
-* `-e2ts` enables audio metadata indexing (needs either FFprobe or mutagen), see [optional dependencies](#optional-dependencies)
+* `-e2ts` enables audio metadata indexing (needs either FFprobe or Mutagen), see [optional dependencies](#optional-dependencies)
 * `-v /mnt/music:/music:r:afoo -a foo:bar` shares `/mnt/music` as `/music`, `r`eadable by anyone, with user `foo` as `a`dmin (read/write), password `bar`
   * the syntax is `-v src:dst:perm:perm:...` so local-path, url-path, and one or more permissions to set
   * replace `:r:afoo` with `:rfoo` to only make the folder readable by `foo` and nobody else
@@ -155,7 +155,7 @@ small collection of user feedback
 
 # bugs
 
-* Windows: python 3.7 and older cannot read tags with ffprobe, so use mutagen or upgrade
+* Windows: python 3.7 and older cannot read tags with FFprobe, so use Mutagen or upgrade
 * Windows: python 2.7 cannot index non-ascii filenames with `-e2d`
 * Windows: python 2.7 cannot handle filenames with mojibake
 * `--th-ff-jpg` may fix video thumbnails on some FFmpeg versions
@@ -409,12 +409,12 @@ tags that start with a `.` such as `.bpm` and `.dur`(ation) indicate numeric val
 
 see the beautiful mess of a dictionary in [mtag.py](https://github.com/9001/copyparty/blob/master/copyparty/mtag.py) for the default mappings (should cover mp3,opus,flac,m4a,wav,aif,)
 
-`--no-mutagen` disables mutagen and uses ffprobe instead, which...
-* is about 20x slower than mutagen
-* catches a few tags that mutagen doesn't
+`--no-mutagen` disables Mutagen and uses FFprobe instead, which...
+* is about 20x slower than Mutagen
+* catches a few tags that Mutagen doesn't
   * melodic key, video resolution, framerate, pixfmt
 * avoids pulling any GPL code into copyparty
-* more importantly runs ffprobe on incoming files which is bad if your ffmpeg has a cve
+* more importantly runs FFprobe on incoming files which is bad if your FFmpeg has a cve
 
 
 ## file parser plugins
@@ -548,7 +548,7 @@ below are some tweaks roughly ordered by usefulness:
 
 enable music tags:
 * either `mutagen` (fast, pure-python, skips a few tags, makes copyparty GPL? idk)
-* or `FFprobe` (20x slower, more accurate, possibly dangerous depending on your distro and users)
+* or `ffprobe` (20x slower, more accurate, possibly dangerous depending on your distro and users)
 
 enable thumbnails of images:
 * `Pillow` (requires py2.7 or py3.5+)
diff --git a/copyparty/__main__.py b/copyparty/__main__.py
index 70bdd7ec..0b383cb3 100644
--- a/copyparty/__main__.py
+++ b/copyparty/__main__.py
@@ -319,9 +319,9 @@ def run_argparse(argv, formatter):
     ap2.add_argument("-e2tsr", action="store_true", help="rescan all metadata, sets -e2ts")
     ap2.add_argument("--hist", metavar="PATH", type=u, help="where to store volume state")
     ap2.add_argument("--no-hash", action="store_true", help="disable hashing during e2ds folder scans")
-    ap2.add_argument("--no-mutagen", action="store_true", help="use ffprobe for tags instead")
+    ap2.add_argument("--no-mutagen", action="store_true", help="use FFprobe for tags instead")
     ap2.add_argument("--no-mtag-mt", action="store_true", help="disable tag-read parallelism")
-    ap2.add_argument("--no-mtag-ff", action="store_true", help="disallow ffprobe as tag reader")
+    ap2.add_argument("--no-mtag-ff", action="store_true", help="never use FFprobe as tag reader")
     ap2.add_argument("-mtm", metavar="M=t,t,t", type=u, action="append", help="add/replace metadata mapping")
     ap2.add_argument("-mte", metavar="M,M,M", type=u, help="tags to index/display (comma-sep.)",
         default="circle,album,.tn,artist,title,.bpm,key,.dur,.q,.vq,.aq,ac,vc,res,.fps")
diff --git a/copyparty/mtag.py b/copyparty/mtag.py
index ef6df958..61858b6f 100644
--- a/copyparty/mtag.py
+++ b/copyparty/mtag.py
@@ -237,14 +237,14 @@ class MTag(object):
             and (not WINDOWS or sys.version_info >= (3, 8))
         )
         mappings = args.mtm
-        or_ffprobe = " or ffprobe"
+        or_ffprobe = " or FFprobe"
 
         if self.backend == "mutagen":
             self.get = self.get_mutagen
             try:
                 import mutagen
             except:
-                self.log("could not load mutagen, trying ffprobe instead", c=3)
+                self.log("could not load Mutagen, trying FFprobe instead", c=3)
                 self.backend = "ffprobe"
 
         if self.backend == "ffprobe":
@@ -256,16 +256,16 @@ class MTag(object):
                 pass
 
             elif args.no_mtag_ff:
-                msg = "found ffprobe but it was disabled by --no-mtag-ff"
+                msg = "found FFprobe but it was disabled by --no-mtag-ff"
                 self.log(msg, c=3)
 
             elif WINDOWS and sys.version_info < (3, 8):
                 or_ffprobe = " or python >= 3.8"
-                msg = "found ffprobe but your python is too old; need 3.8 or newer"
+                msg = "found FFprobe but your python is too old; need 3.8 or newer"
                 self.log(msg, c=1)
 
         if not self.usable:
-            msg = "need mutagen{} to read media tags so please run this:\n{}{} -m pip install --user mutagen\n"
+            msg = "need Mutagen{} to read media tags so please run this:\n{}{} -m pip install --user mutagen\n"
             pybin = os.path.basename(sys.executable)
             self.log(msg.format(or_ffprobe, " " * 37, pybin), c=1)
             return
@@ -397,7 +397,7 @@ class MTag(object):
             v2 = r2.get(k)
             if v1 == v2:
                 print("  ", k, v1)
-            elif v1 != "0000":  # ffprobe date=0
+            elif v1 != "0000":  # FFprobe date=0
                 diffs.append(k)
                 print(" 1", k, v1)
                 print(" 2", k, v2)
diff --git a/copyparty/th_srv.py b/copyparty/th_srv.py
index 96d6361e..11f3b2a1 100644
--- a/copyparty/th_srv.py
+++ b/copyparty/th_srv.py
@@ -121,10 +121,10 @@ class ThumbSrv(object):
         if not self.args.no_vthumb and (not HAVE_FFMPEG or not HAVE_FFPROBE):
             missing = []
             if not HAVE_FFMPEG:
-                missing.append("ffmpeg")
+                missing.append("FFmpeg")
 
             if not HAVE_FFPROBE:
-                missing.append("ffprobe")
+                missing.append("FFprobe")
 
             msg = "cannot create video thumbnails because some of the required programs are not available: "
             msg += ", ".join(missing)
diff --git a/copyparty/up2k.py b/copyparty/up2k.py
index 415f96a3..a8accf08 100644
--- a/copyparty/up2k.py
+++ b/copyparty/up2k.py
@@ -304,7 +304,7 @@ class Up2k(object):
         self.log(msg.format(len(vols), time.time() - t0))
 
         if needed_mutagen:
-            msg = "could not read tags because no backends are available (mutagen or ffprobe)"
+            msg = "could not read tags because no backends are available (Mutagen or FFprobe)"
             self.log(msg, c=1)
 
         thr = None