The Films on Demand database has over 100 videos on Women's Suffrage including both documentaries and newsreel footage. All the material is professionally made and designed for research and teaching.
A few titles:
Battle for the Ballot a four-minute overview of key events and people with original photos and video from the early 1900s
The Oratory of Women's Suffrage re-creates the speeches of leading suffragettes
Not for Ourselves Alone:The Story of Elizabeth Cady Stanton and Susan B. Anthony a two-part series from documentary filmmaker Ken Burns featuring archival material, "An unforgettably personal, inside look at the birth of the modern women's movement"
‘You have to make more noise than anybody else, you have to make yourself more obtrusive than anybody else, you have to fill all the papers more than anybody else’ - Emmeline Pankhurst (Nov 1913)
Film of British women and suffragettes from 1900-1915 with commentary from the British Film Institute.
Video that is free on the web can be well researched, carefully curated material created by knowledgeable people. Or school assignments, passion projects and propaganda uploaded by random people.
Just like using any website:
The women's suffrage movement inspired this 1913 silent film classic, which features appearances by equal rights crusaders Emmeline Pankhurst and Harriot Stanton Blatch. As politicos work to deny women the right to vote, a young lawyer tells his activist girlfriend of government corruption that actively seeks to ensure that her voice is never heard. Douglass Dumbrille, Ronald Everett, and George Henry star.
Compelling recitation of a 1913 speech given in Hartford Connecticut by Emmeline Pankhurst, leader of the Women’s Social and Political Union.
She was in the United States to raise money for the WSPU and drew parallels between the struggle of the Suffragettes and the causes of the American War of Independence.
From a project led by Royal Holloway, University of London.