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Re: [blink-dev] Intent to Ship: Animated WebP images

Darin Fisher Jul 16, 2013 4:43 PM
Posted in group: blink-dev
Hi Urvang,

It seems that a number of concerns have been raised on this thread.  It's not clear that we are ready to ship Animated WebP.

For instance, it seems that Animated WebP is trying to be an improvement over Animated GIF, but based on Alpha's findings, the results are not great.  Transport size is marginally reduced at the cost of much greater CPU / power usage.  That seems like a questionable trade-off.

The proposal of <img src="foo.webm"> is intriguing.  I'm keen on seeing the idea explored further.

At any rate, the recommendation of the Blink API Owners is to work on resolving some of these issues with the goal of building more consensus.  (Personally, I'm a big fan of finding some way to improve on Animated GIFs, so I wish you success.)


On Thu, Jun 27, 2013 at 9:09 PM, Urvang Joshi <> wrote:

Primary eng (and PM) emails


WebP Container Spec is part of libwebp v0.3.0 and can be accessed here:


Animation support was added to WebP in v0.3.0. This patch adds the same support in Blink.

Note: We already support non-animated WebP images, so this is an incremental feature addition.

Link to “Intent to Implement” blink-dev discussion!topicsearchin/blink-dev/webp$20animation/blink-dev/Y8tRC4mdQz8

Is this feature supported on all five Blink platforms (Windows, Mac, Linux, Chrome OS and Android)?


OWP launch tracking bug?

(Bug related to implementation:

Row on feature dashboard?