I agree with everything @henddraig said. I watched the first three or so minutes of the video above, and found that the pictures at best added nothing to my understanding, and at worst were actually distracting. By about the two and a half minute mark, I was either closing my eyes so I could listen better, or my gaze was roaming around the room.
And while knowing the Welsh spelling is helpful for telling the consonants apart, I find it unnecessary and even potentially misleading when it comes to the vowels. Truly, Iād rather just listen to the vowels, so Iām not tempted to look at the spelling and pronounce them as though theyāre English vowels. I have no trouble whatsoever hearing the vowels.
I realise that this will probably mean my literacy in Welsh falls behind that of other Welsh learners. I sometimes read Welsh phrases and sentences in this forum and think, what strange looking words, with all their [w]s and [y]s, what on earth are you saying? But inferior literacy, or at least more slowly acquired literacy, is a price Iām prepared to pay in order to develop a better Welsh accent.
The main thing I would find valuable in a video, as @henddraig mentioned, is a closeup of the speakerās face as they form the words, so (for example) I could clearly see the difference between [dd] and [f], or between [pr] and [thr]. That would only need to be a very short video. Just saying each word in the vocabulary list twice or maybe three times would be sufficient. The entire vocabulary list for a single lesson would probably fit comfortably into a two-minute video. But it does need to be a close-up. If we canāt clearly see the speakerās mouth, you may as well not bother.
Actually, make that two things⦠as @henddraig also said, in challenges that contain long sentences, it might be helpful to be able to look at the English sentence as a memory prompt. This would help compensate for what seems to be my below-average working memory. But thatās a fairly minor thing. I find hitting the Pause button and repeating the long sentence in English before attempting the Welsh seems to work well enough, most of the time.
Having said all that⦠different people learn in different ways. Some people might find a video method more appealing. I prefer to close my eyes while working through the lessons, but some people are visual learners, and they may find that looking at words and pictures helps hold their attention better.
And hey, if the purpose of the videos is mainly to spread the word, then go for it. Anything that helps drive more traffic to this site can only be a good thing!