I was inspired to revisit this. On closer inspection, the Vimeo item given by the original poster indeed does have something more than just a single frozen image. You have to let the video play a bit before you come to something other than that original image. In my more in depth investigation today, I did something very much like what you can see in this other recent thread:
The difference is that there, the video & audio were in a single file. Here, the video & audio are in separate files. Here's how I discovered it. As always, I opened the Network Monitor then let the video play for a couple of seconds on the Vimeo page. That's all you need. Just let it play for a moment, then stop it. Filtering on .m3u8 did not find any HLS manifest. Filtering on .mpd did not find any DASH manifest. Filtering on .mp4 found a few items:
At this point, it's a question of trial & error. You have to just go through each entry in the Network Monitor & double click it. When I double clicked the first entry, Firefox opened a new tab with this in it:
But this is a problem we have solved before. (Credit where credit is due. Fellow user mjs figured this bit out.) The URL needs to be repaired. Go into the URL bar & highlight the last section of the URL:
Then delete that string. Then hit Enter. You'll get this:
It seems this is an audio track without video. That's pretty easy to figure out since there's no image visible on the page. Pop up the context menu on the playback control, then select the "Save Audio As..." entry on the menu. This will download the audio track to your system as an MP4. You can also download this with VDH.
Now go back to the Vimeo page & double click the next entry in the Network Monitor. Once again, you'll get a new Firefox tab with the error message about unsupported format & MIME type. Correct the URL again, same as before. This time you'll get a video but there will be no audio with this. Look closely on the playback control bar. You'll see the little speaker icon has a line through it, as if the audio is muted. Clicking the icon will not change it to unmute the audio. This is your clue that this is a video without an audio track.
Pop up the context menu as before. This time select "Save Video As..." from the menu. This will download the video to your system. You can also use VDH to download this.
At this point, you will have 2 files on your system, each one about 70M-75M in size. Those do seem like particularly small files for a video of almost 2 & 1/2 hours duration. Have faith. The properties I got looked like this:
Surely these files are damaged. These properties are completely anomalous. Again, have faith. Go ahead & play them in VLC using the synchronous playback feature of VLC. You can learn how to do that by searching for "synchronous" in this thread:
It looks like this & trust me, it also has audio, although it's in a language I don't understand. I believe it's Chinese.
If you really must have a single file you can play, you can use the VDH tool for aggregating video with audio. Once again, go here:
Once again, search for "synchronous" but click the second link below the search hit.
Now, the video file I downloaded appears to be only resolution 426x198 according to the Windows properties. Given that everything else in those properties is 0, I didn't entirely trust it. But the Media Information available from VLC during playback confirms that indeed is the resolution of this item. I didn't investigate this any further but I suspect that lower down in the Network Monitor, it is likely that videos of higher resolution are available. It is also possible that higher quality audio tracks may also be available. It's up to you to find them. Like I said, it's a process of trial & error.
Why didn't VDH list the separate audio & video tracks properly? Beats me. Maybe the way Vimeo presents the information to VDH is non-standard in some way. Whatever. You have an alternative way of getting this video.