Real lossless ugoira

docs/configuration.rst

@@ -3751,4 +3751,4 @@ Description
 .. _requests.request(): https://requests.readthedocs.io/en/master/api/#requests.request
 .. _timeout:            https://requests.readthedocs.io/en/master/user/advanced/#timeouts
 .. _verify:             https://requests.readthedocs.io/en/master/user/advanced/#ssl-cert-verification
-.. _`Requests' proxy documentation`: https://requests.readthedocs.io/en/master/user/advanced/#proxies
+.. _`Requests' proxy documentation`: https://requests.readthedocs.io/en/master/user/advanced/#proxies

gallery_dl/option.py

@@ -400,6 +400,19 @@ def build_parser():
         },
         help="Convert Pixiv Ugoira to WebM in VP9 lossless mode",
     )
+    postprocessor.add_argument(
+        "--ugoira-conv-copy",
+        dest="postprocessors", action="append_const", const={
+            "name"          : "ugoira",
+            "ffmpeg-twopass": False,
+            "whitelist"     : ("pixiv", "danbooru"),
+            "libx264-prevent-odd": False,
+            "extension"     : "mkv",
+            "re-encoding"   : False,
+            "repeat-last"   : False,
+        },
+        help="Convert Pixiv Ugoira to MKV in copy mode (without re-encoding)",
+    )
     postprocessor.add_argument(
         "--write-metadata",
         dest="postprocessors",

gallery_dl/postprocessor/ugoira.py

@@ -106,6 +106,25 @@ def convert(self, pathfmt):
                 else:
                     args.append(pathfmt.realpath)
                     self._exec(args)
+
+                    # test mkvmerge
+                    timecodes = tempdir + "/timecodes.txt"
+                    content = ["# timestamp format v2"]
+                    append = content.append
+                    timecode = 0
+                    append("{}".format(timecode))
+                    for frame in self._frames:
+                        timecode = timecode + frame["delay"]
+                        append("{}".format(timecode))
+                    if self.repeat:
+                        append("{}".format(timecode))
+                    append("")
+                    with open(timecodes, "w") as file:
+                        file.write("\n".join(content))
+                    self._exec("mkvmerge --timecodes 0:{}/timecodes.txt -o {} = {}".format(
+                        tempdir, tempdir + "/mkvmerge.mkv", pathfmt.realpath))
+                    from shutil import move
+                    move(tempdir + "/mkvmerge.mkv", pathfmt.realpath)
             except OSError as exc:
                 print()
                 self.log.error("Unable to invoke FFmpeg (%s: %s)",