Support webp animations.

[kevincox]

Is your suggestion related to a problem? Please describe.
webp animations should be treated the same as animated gifs. Right now they just look like images unless you click them in which case they start playing.

Describe the solution you'd like
There should be an indicator that there is more than a picture to see (or auto-play)

[t3chguy]

That is simply a case of the thumbnailer of the server creating a static thumbnail for them. Not an Element Web issue and I believe with certain servers it works just fine.

[kevincox]

I should clairify that this was an image sent from app.element.io to an e2ee chat. The server shouldn't have seen the image at all. Maybe the thumbnailer in element-web needs to be updated?

[kevincox]

I checked and there does appear to be a non-animated PNG thumbnail that is being shown.

Maybe we shouldn't use the thumbnail animated images? Or we should thumbnail to smaller animated images? Or use the thumbnail but put a "play" button overtop like animated GIFs.

[kevincox]

{
  "type": "m.room.message",
  "content": {
    "body": "REDACTED.webp",
    "info": {
      "size": 2517524,
      "mimetype": "image/webp",
      "thumbnail_info": {
        "w": 500,
        "h": 281,
        "mimetype": "image/png",
        "size": 128832
      },
      "w": 500,
      "h": 281,
      "thumbnail_file": {
        "v": "v2",
        "key": {
          "alg": "A256CTR",
          "ext": true,
          "k": "REDACTED",
          "key_ops": [
            "encrypt",
            "decrypt"
          ],
          "kty": "oct"
        },
        "iv": "REDACTED",
        "hashes": {
          "sha256": "REDACTED"
        },
        "url": "mxc://REDACTED",
        "mimetype": "image/png"
      }
    },
    "msgtype": "m.image",
    "file": {
      "v": "v2",
      "key": {
        "alg": "A256CTR",
        "ext": true,
        "k": "REDACTED",
        "key_ops": [
          "encrypt",
          "decrypt"
        ],
        "kty": "oct"
      },
      "iv": "REDACTED",
      "hashes": {
        "sha256": "REDACTED"
      },
      "url": "mxc://REDACTED",
      "mimetype": "image/webp"
    }
  }
}

[t3chguy]

Should be supported in the same manner GIFs are