: The .mp4 file format was developed in the late 1990s. Any "1877" file found today is a modern digital upload, even if it claims to be a restoration.
: The Roundhay Garden Scene , the oldest surviving film. Sexy Girl (1877) mp4
: Sequential photos of a galloping horse. Sexy Girl (1877) mp4
The search for typically points to a modern internet hoax or a mislabeled video, as there is no historical record of a film by that name or a functional "mp4" format in the 19th century. In 1877, the very concept of "cinema" was in its experimental infancy. The Historical Reality of 1877 Sexy Girl (1877) mp4