Notability is the app you want to use but it is $8.99. There is also a version for Macs as well. This allows multiple colors and it opens with a large page to write on. I can't vouch for it because I use Notes but Notability is a popular app. You can read about it at the link I included.
There is a free app called Notes Writer which you could check out since ...
This feature is available from Private Internet Access. They call it their Desktop Application Split Tunneling Feature. It is a complex enough feature that I would not expect it to be supported by free software.
If you want to stay in Safari ecosystem, consider Adguard: https://github.com/AdguardTeam for Mac as well as iOS. If it breaks any page on iOS, hold refresh button & tap "reload without content blockers."
Taking it one step further, consider Adguard Home for network level ad blocking on every device connected. This adds much more to ...
I use uBlock Origin with Safari 12 on macOS Mojave. It has been several months since I watched an Youtube ad.
This blog was of extreme help in making the extension work using extension builder. It also has an AppleScript to enable the extension quickly.
I couldn't get ...
The fourth point about rewinding video and re-recording is unheard of. Let's say you made a minor mistake while speaking, best you can do is one or more of the following:
Open the video editor, add a text box that shows the correct thing to say, make it visible in the video as an overlapping window for 3-4 seconds. This is a common method to fix mistakes in ...
Try Proxyman, which is exclusively built for macOS.
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All advanced tools: Map Local, Map Remote, Breakpoint, Scripting, ...
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Disclaimer: I'm a creator of Proxyman. Just come here to suggest a better alternative to boost ...
If the mp4 file has a subtitle track, you could extract the text to a .srt file using mp4box (more info can be found at How to extract subtitles from MP4 and MKV movies. Of course, you would need to do this for every file you have then search within those .srt files.
I saw this question pretty late. Another option is to use svg-edit It is browser based, and you can download the entire application and runs in your web browser.
They also have an online version. see SVG editor