I'm haveing a bit of a problem when trying to use FFmpeg. I've mostly been using it to extract clips from videos and such. However, I've been trying to get some subtitles embedded (hardsubs) into the video.

The FFMpeg documentation told me I should use the "ass" video filter, and I tried it as shown but to no avail. There's no change. The video doesn't have the subtitles on it; they don't even show up as a stream in the file. I may as well not have included the filter.

This is the line I'm using, which isn't working. The file has no audio stream attached.

ffmpeg -i input.webm -vf ass=subs.ass -b:v 1200K out.webm

I know that the subtitles should work. When I manually load them from my video player, or even mux them together into the file, they display just fine. But for some reason ffmpeg refuses to burn the subtitles into the video itself.

However, there is a bit of an error I'm getting, that doesn't normally appear, and I have NO idea what it's talking about.

Fontconfig error: Cannot load default config file [Parsed_ass_0 @ 00000000042c33c0] No usable fontconfig configuration file found, using fallback. Fontconfig error: Cannot load default config file [Parsed_ass_0 @ 00000000042c33c0] Added subtitle file: 'subs.ass' (3 styles, 68 events)

Any help regarding this would be greatly appreciated. (If it helps, I'm using the windows version of ffmpeg)

Edit: Here's a MediaFire link of the ,ass file. (You'll notice the subtitles themselves are less than serious.)