For this reason, my testing was limited to content I actually own or have licensed to others, including an entire feature-length movie with advertising was enabled. YTC worked like a charm on nearly every URL I threw at it, the only exceptions were Google Play, private, or age-restricted videos, which the software failed to recognize. (The latest version adds the ability to download videos from Facebook and Instagram, which are far easier than YouTube, at least for now.)
Although you can copy multiple URLs into YTC while videos are processing, I found this method frequently tripped up current downloads; multiple URLs can instead be queued ahead of time, then transferred all at once, which worked more reliably. On occasion, transfers to my iPhone 6s Plus and iPad Pro would fail to work, but reconnecting or restarting the device always got things working again.
Softorino YouTube Converter is an elegant solution for downloading videos for offline playback, but the questionable legality of using it in the first place will make it a non-starter for any Mac users with a conscience.
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