That also means Reddit rewards reading the result panel: if it shows a video list and an audio list, the merge is part of the process rather than an optional extra.
Which Reddit link to copy
The post's permalink is the address that carries the media. An image post has a picture rather than a video, and a crosspost may point at the original rather than at itself.
- reddit.com/r/{sub}/comments/{id}/… — the post permalink
- v.redd.it/{id} — the direct host when a link points straight at it
- A subreddit front page or a user profile has no single video to return
Why Reddit videos need a merge
v.redd.it delivers video and audio as separate streams over the same adaptive protocol the big platforms use. A downloader that saves only the video stream hands you a silent file, which is why so many Reddit downloads sound broken.
- Two lists in the result panel is the normal case for Reddit
- Select one track from each list before saving
- Merging into one MP4 needs a desktop browser with the File System Access API
Images, galleries and text posts
Not every Reddit post is a video, and the result reflects that. A gallery returns several image entries, a single-image post returns one, and a text post returns nothing at all.
- Galleries list each image separately; save them one at a time
- A link post may resolve to whatever site it points at
- An external host such as Streamable or Imgur depends on whether that site is readable
Reference
These tables are shared across the site, so a figure you saw on one page is the figure you see here.
| Address shape | Resolves | Why |
|---|---|---|
| instagram.com/reel/{id} | Yes | A Reel or a post carries exactly one piece of media. A profile does not. |
| facebook.com/watch/?v={id} | Yes | Watch videos, Reels and page videos all resolve; the audience setting still has the final say. |
| reddit.com/r/{sub}/comments/{id}/… | Yes | The permalink under the post is what carries the media, and v.redd.it serves it as two streams. |
| pinterest.com/pin/{id} | Yes | A Pin resolves to a video, to a still image, or to a link onwards that has no media of its own. |
| threads.com/@{user}/post/{id} | Yes | One post, one video. Both the current and the older hostname work. |
| xiaohongshu.com/explore/{id} | Yes | A note resolves, and the short form the app shares redirects to it. |
| douyin.com/video/{id} | Yes | The share message contains the link, and the whole message can be pasted. |
| youtube.com/watch?v={id} | Yes | A watch address resolves; a channel page or a search result has no single video. |
| tiktok.com/@{user}/video/{id} | Yes | A video address resolves; a profile does not. |
| bilibili.com/video/BV… | Yes | A BV address resolves; a space page does not. |
| x.com/{user}/status/{id} | Yes | A status address resolves; a profile timeline does not. |
| /{user} · /profile · /search | No | Profiles, boards, channels, search results and home feeds have no single piece of media behind them. |
Which links work best
- reddit.com/r/{sub}/comments/{id}/…
- v.redd.it/{id}
Those are the shapes worth pasting. SniffVid accepts any other public http(s) link too — whether it resolves is up to the source, so a profile, a search page or a private post simply comes back empty.
Background and edge cases
Why v.redd.it is the clearest example of the split
Reddit hosts its own video on a host that serves picture and sound as two separate streams, and this is the normal case rather than an exception. Any tool that saves only the video stream hands you a silent file — the same problem as YouTube, in a place people do not expect it.
- Two lists in the result panel is the expected result here, not a warning sign
- Select one track from each list, then merge on a desktop browser
- The merged file carries the audio Reddit served, so nothing is invented or restored
The four kinds of post
Reddit is a link aggregator, so a permalink can point at any of several things. Knowing which one you opened is most of the work: the result panel is short and unambiguous once you know what you are asking for.
- A hosted video: two streams, merge required
- A gallery: several image entries, saved one by one
- A single image: one file, saved in one click
- A text or poll post: nothing to download, by definition