Comparisons
Same Clip, Four Platforms: Which Copy Should You Save?
One clip, four places, four different files. The Reel comes back at 1080x1920, the TikTok it was reposted from at 576x1024, the Facebook copy usually at 720p. Where you copy the link from decides what you keep.
A clip posted to Instagram, TikTok, Facebook and YouTube is four different files. Each platform serves its own rendition, and those renditions do not match: roughly 1080x1920 from a Reel, 576x1024 from TikTok, usually 720p from Facebook. Where you copy the link from decides what you end up keeping.
What each platform hands back
| Where the link came from | What you get | The catch |
|---|---|---|
| Instagram Reel | Typically 1080x1920 MP4 | Instagram re-encodes every upload, so this is Instagram’s compression |
| TikTok | 576x1024 MP4, H.264 with AAC | Exactly as TikTok serves it, nothing re-encoded, nothing upscaled |
| Commonly 720p | Higher renditions exist but stay behind a signed-in session | |
| YouTube Shorts | Source resolution, 1080p ceiling | A clip uploaded small stays small |
The ranking catches people out. A Reel reposted from TikTok usually comes back in a bigger frame than the TikTok post it was copied from. That is more pixels, not more detail. Stretching a 576-wide source to 1080 wide does not recover anything that was thrown away the first time.
None of these is the original file
Platforms transcode on upload. Instagram re-encodes everything, which is why a Reel reflects Instagram’s settings rather than whatever the creator exported. YouTube is the honest exception in one direction: it serves the source resolution up to a 1080p ceiling, so a video uploaded at 240p is still 240p when you save it.
Facebook is the awkward one. It keeps several renditions of the same video and only offers a lower one to a logged-out visitor. That is the gap you notice when the clip looks sharper in your feed than in the file sitting on your phone.
A repost carries the last platform with it
Watermarks are part of the frames, not metadata. A Reel reposted from TikTok often has a TikTok watermark burned in by whoever reposted it, and saving the video copies the frames as they are.
Filenames differ too, and they matter more than they sound. An Instagram post has a shortcode rather than a title, so you get instagram_DZQV2GcKSa8.mp4. Facebook uses its numeric video ID. YouTube passes through the real title with the resolution and codec attached. Two of those three are unsearchable a month later.
Picking the copy worth keeping
- Between a Reel and the same video on Facebook, take the Reel. It is the higher rendition of the two.
- Between a TikTok and an Instagram repost of it, the TikTok is the earlier generation even though the numbers look smaller.
- Test a doubtful link in a private browsing window first. If it asks you to log in there, no downloader can reach it either.
- Save one copy, not four. Near-identical duplicates are how a library turns into clutter.
- Rename it on arrival if you are keeping it.
Save what you have the right to save: your own uploads, content the platform allows you to keep, public posts for personal offline viewing. Platform terms of service still apply to you, and none of this is a way around a private account.
On iPhone, Arca takes the link you paste and puts the video straight into an encrypted vault instead of the Camera Roll. Files are sealed on device with AES-256-GCM, the key comes from your PIN through Argon2id, and the saved vault is not automatically uploaded. The app saves video; pulling audio on its own is a website job, on the YouTube to MP3 page.
Frequently asked questions
The same Reel is on Instagram and Facebook. Which link is better? +
Instagram, in most cases. A vertical Reel comes back at around 1080x1920, while Facebook serves logged-out visitors a lower rendition, commonly 720p. Facebook holds higher renditions but does not expose them without a signed-in session.
My TikTok download is 576x1024. Did something lower the quality? +
No. That is the file TikTok serves, H.264 video with AAC audio, and it arrives untouched. Nothing is re-encoded and nothing is upscaled, so the download matches what plays in the app.
Can I get the creator's original upload? +
No. Every platform transcodes on upload and then serves its own rendition, so the file the creator exported is not the file anyone gets. The best you can have is the best rendition a platform is willing to hand out.
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