Changes between Version 11 and Version 12 of HowToConvertYouTubeSBVtoSRT

Timestamp:

Jun 9, 2019, 8:28:26 PM (7 years ago)

Author:

omniplex

Comment:

solved overlapping timestamp issue

HowToConvertYouTubeSBVtoSRT

@@ +1 @@
+= How to convert !YouTube SBV to SRT =
+
 Simply like this:
 {{{
@@ -32 +34 @@
 !YouTube is smart enough to detect and report simple errors, but you should make sure that timestamps do not overlap, i.e., the earliest ''from'' in the next caption can be the same as the ''to'' end of the last caption. Obviously the duration should be not too short, and it cannot be "negative" with a ''from'' later than its corresponding ''to''. 
 
-The auto-generated SBV example shown above (downloaded from a !YouTube movie trailer) actually uses overlapping timestamps, and ''FFmpeg'' kept them as is in its SRT conversion. ''If you know more about this feature (?) please add some info here.'' 
+The auto-generated SBV example shown above (downloaded from a !YouTube movie trailer) actually uses overlapping timestamps, and ''FFmpeg'' kept them as is in its SRT conversion. For the theory see the ''WebM Project'' [https://www.webmproject.org/docs/container/#general-webvtt-notes General WebVTT Notes], in practice input option [https://ffmpeg.org/ffmpeg.html#Advanced-Subtitle-options -fix_sub_duration] can get rid of this:
+
+{{{
+ffmpeg -fix_sub_duration -i captions.sbv captions.srt
+}}}
+
+Fixed SRT output sample:
+
+{{{
+1
+00:00:05,000 --> 00:00:10,100
+you know where's the girl who hasn't
+
+2
+00:00:10,100 --> 00:00:13,700
+gotten to college or even maybe finished
+
+}}}
 
 ''SMplayer'' using ''MPlayer'' is unsuited as a syntax check, e.g., it doesn't insist on file extension '''`.srt`''', anything including '''`.txt`''' goes, it accepts missing counters, and simply ignores timestamps greater than the duration of the clip. As of early 2019 !YouTube could not handle the latter, the upload failed without reporting an error.