[downloader/mhtml] Add new downloader (#343)

This downloader is intended to be used for streams that consist of a
timed sequence of stand-alone images, such as slideshows or thumbnail
streams

This can be used for implementing:

https://github.com/ytdl-org/youtube-dl/issues/4974#issue-58006762
https://github.com/ytdl-org/youtube-dl/issues/4540#issuecomment-69574231
https://github.com/ytdl-org/youtube-dl/pull/11185#issuecomment-335554239

https://github.com/ytdl-org/youtube-dl/issues/9868
https://github.com/ytdl-org/youtube-dl/pull/14951


Authored by: fstirlitz

1 files changed, 16 insertions, 4 deletions

diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index 3cb79b657..59445a1da 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -2244,6 +2244,17 @@ def unescapeHTML(s):
         r'&([^&;]+;)', lambda m: _htmlentity_transform(m.group(1)), s)
 
 
+def escapeHTML(text):
+    return (
+        text
+        .replace('&', '&')
+        .replace('<', '&lt;')
+        .replace('>', '&gt;')
+        .replace('"', '&quot;')
+        .replace("'", '&#39;')
+    )
+
+
 def process_communicate_or_kill(p, *args, **kwargs):
     try:
         return p.communicate(*args, **kwargs)
@@ -2323,13 +2334,14 @@ def decodeOption(optval):
     return optval
 
 
-def formatSeconds(secs, delim=':'):
+def formatSeconds(secs, delim=':', msec=False):
     if secs > 3600:
-        return '%d%s%02d%s%02d' % (secs // 3600, delim, (secs % 3600) // 60, delim, secs % 60)
+        ret = '%d%s%02d%s%02d' % (secs // 3600, delim, (secs % 3600) // 60, delim, secs % 60)
     elif secs > 60:
-        return '%d%s%02d' % (secs // 60, delim, secs % 60)
+        ret = '%d%s%02d' % (secs // 60, delim, secs % 60)
     else:
-        return '%d' % secs
+        ret = '%d' % secs
+    return '%s.%03d' % (ret, secs % 1) if msec else ret
 
 
 def make_HTTPS_handler(params, **kwargs):