Subtitling iPad videos for Twitter

[Lwayne]

Hello. I am looking for help. I have spent a good 8 hours trying to subtitle the dialog in videos I made with my iPad and tweet the subtitled videos. I've made a lot of progress - an example tweet is here:

https://twitter.com/Activist_Len/status ... 4922109952

But several of the videos I can't get to translate properly even though I used the same iPad (it is the latest model, with all updates) and the same laptop. Is VLC the right tool for what I am trying to do? The videos all look fine when I first pull them off the iPad and play them (still in .mov format) with, say, the "Movies & TV" app in Windows, before subtitling them (with VLC) or moving them to Twitter. But for some of the files, things go wrong, and the problems happen at different places in the chain.

Before I kill myself in frustration, I thought I would reach out to see whether other people have had these same problems and found solutions.

I'm using VLC Media Player version 3.0.3 on Windows 10.

Here is an example. This is a video file copied straight from the iPad to my PC:

https://www.dropbox.com/s/zkeik3wrhx0pn ... 4.MOV?dl=0

And here is the corresponding subtitles file (created with "Subtitle Edit"), which I placed in the same directory as the .mov file:

https://www.dropbox.com/s/am01gnotgcp1y ... 4.srt?dl=0

I followed the steps below, which I found in a youtube video:

* Start the VLC media player.
* Click "Tools -> Preferences -> Reset preferences". Save.
* Restart VLC media player (to be safe).
* Click "Media -> Stream".
* "Add" the .mov file linked to above. Do not bother clicking "Use a subtitle file".
* Click "Stream".
* Click "Next".
* "Add" a destination file. I'll use "output_file_1" (and let the suffix get set automatically).
* Click "Next".
* For "Profile" select "Video - H.264 + MP3 (MP4)".
* Click the wrench icon.
* On the "Subtitles" tab put a checkmark on "Subtitles", set "Codec" to "T.140", and put a checkmark on "Overlay subtitles on the video".
* Click "Save".
* Click "Next".
* Delete "scodec=t140" from the "Generated stream output string".
* Click "Stream".
* Wait for the VLC media player to process the file.
* Kill the VLC media player.

The output file is here:

https://www.dropbox.com/s/viltnm818qf92 ... 1.mp4?dl=0

When I look at the video (using the "Movies & TV" app in Windows, or the VLC media player), the audio is fine but the video rythmically (~once/second) freezes then advances a few frames. The following webpage says this happens not infrequently with the VLC media player, and lists some things to try in order to fix the problem:

https://www.vlchelp.com/stop-hd-video-f ... ezing-vlc/

I have tried almost all the suggestions, but without success. The video still freezes then advances.

I mentioned this is just one example of problems I have had trying to add subtitles to iPad videos and uploading the resulting files to Twitter. Sometimes the video/audio are both OK before I post to Twitter, then the audio in the resulting tweet rythmically freezes and advances.

Is the VLC media player the tool I should be using for this task? Does anyone have suggestions for how to overcome these problems?

Thank you in advance.

- Len