The software that generates the waveform does so in the background. this process is totally separate from the video display. It doesn’t stop the app from working while it does this and you can carry on playing the video and adding/modifying subtitles while it does this processing. There really isn’t anything you can do to speed up the process.
The waveform can only be displayed once the whole audio track of the movie has been read and processed. After that happens the waveform position syncs to the video’s position and they are in lockstep from then on.
Having said all that, there is a plugin called PeakCache, that allows partial rendering of the waveform. I will look into this to see if I can speed up the render for large audio tracks, but it may take a day or two. Maybe this will will be version 3.
P.S. the ‘>>>>>’ button is a ‘seek 30 seconds ahead and pause’ button. The ‘5.0’ button is a ‘speed up the video 5x’ button.
Been out of wireless range for a day. Could you please download mediainfo from here: https://mediaarea.net/en/MediaInfo/Download Then open your video in it and view->text, then post the output here.
The generator has worked OK with the 5 or 6 videos I have used, so would like to see what is different about yours.
Is your file (video.mp4) in the same folder/directory as the srt_generator.html? If not could you copy it to that folder/directory and try again, letting me know if that works.
I have just looked at the code and because itis Javascript it can only obtain the filename, not the directory/folder that the file is in.
Thanks for the response. Here’s the output from MediaInfo
General
Complete name : D:\user\Pictures\2020\hampi\badami\badami_finalcut3.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 232 MiB
Duration : 6 min 42 s
Overall bit rate : 4 836 kb/s
Writing application : Lavf58.29.100
I will modify my webpage to invlude this restiction. As I said it is a restriction of Javascript that will not let you get the whole pathname, only the last portion (filename). There is a possible way round it, but that has caused problems for people in the past and I am loathe to go down that route.
Anyway, I’m glad you can now use the SubRip generator with this restriction.
Thanks for your generosity. It’s a beautiful piece of work. Sorry for the late response, internet bowed down yesterday to Cyclone Nisarga. Here’s my first attempt with subtitles.
Brilliant. A very well done video with some interesting effects applied. The subject matter was also very interesting. I’m glad you managed to get the subtitles downloaded to YouTube. It took me a moment or two to click on the subtitle icon under the video. Having used my SubRip subtitling app do you have any suggestions as to improvements you’d like to see. Maybe an option to set the Words per Second to something othe than 3 perhaps?
Thank you! I found it very easy to use right away. 3 Words per Second is fine. Maybe you could put in tooltips for the various buttons. Initially I needed to look up the Help manual but could not access due to network issues. Also, when I tried to open import a .srt file without first loading a video nothing happens, so maybe an error message for that. But these are all minor things!