What is the ruling on uploading a video on Islamic sciences if a woman watches it and looks at men?

If "uploading a video" means playing it for viewing, then it is impermissible for a woman to look at non-mahram men with lust, by consensus. As for looking at them without lust, it is permissible, especially when there is a need, such as benefiting from video recordings of scholars. However, it is preferable to lower the gaze and suffice with listening to avoid doubts. This is supported by the hadith where Aisha saw the Ethiopians playing in the mosque and the Prophet was shielding her, and by the statement of Iyadh permitting women to look at the actions of non-mahram men as long as there is no pleasure or suspicion involved.