[HN Gopher] Show HN: Video2WebP - convert videos to animated Web...
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Show HN: Video2WebP - convert videos to animated WebP in the
browser
Author : devadvance
Score : 29 points
Date : 2021-09-13 18:37 UTC (4 hours ago)
(HTM) web link (video2webp.mattj.io)
(TXT) w3m dump (video2webp.mattj.io)
| nickphx wrote:
| Excellent work, thanks for sharing. I did notice an issue where
| transcoding will fail if the filename chosen contains a space,
| the transcoding will fail with 'file not found'.
| dylan604 wrote:
| I have often been heard telling people that I'm going to remap
| the spacebar to an underscore on everyone's computer.
| go_prodev wrote:
| Thanks for linking to this, I was looking for something similar
| today, I'll give it a crack
|
| I didn't realize that WebP supported animation. Wasn't that the
| purpose of WebM?
| devadvance wrote:
| Happy to share!
|
| WebP [1] is based upon VP8 encoding. VP8 is one of the codecs
| for which WebM is frequently a container. Ultimately, it's
| similar but achieves different objectives.
|
| [1] https://en.wikipedia.org/wiki/WebP#Technology
| zamadatix wrote:
| Looks to be using https://github.com/ffmpegwasm/ffmpeg.wasm
|
| In the future https://www.w3.org/TR/webcodecs/ may allow for a
| native API to do this.
| aeharding wrote:
| > [...] directly in the browser. The video does not leave your
| local machine.
|
| It would be cool if there were a special browser badge for a
| website that ensured uploaded content couldn't be transmitted to
| the server.
|
| Something in the spirit of `Content-Security-Policy: connect-src
| 'none';` (not sure if that covers all edge cases though, I'm not
| super familiar with CSP)
| EMM_386 wrote:
| This is a pretty wild concept, not that I disagree with it.
|
| But when you think about it, we're asking a tool originally
| designed to browse documents on the web, to now execute what is
| essentially a (safe) binary application, and not to let it
| connect to the internet, while inside a document in a web
| browser.
|
| I can't see how the future of the desktop is not going to be
| radically shaped by WASM, in whatever form that takes.
| astlouis44 wrote:
| Agree 100%, next few years of webapps are going to be
| revolutionary. WebAssembly gaming in particular is going to
| disrupt Steam on PC, and the App Stores on mobile. Our
| startup is working on this btw
| pattyj wrote:
| i've wondered about this myself for a while
|
| maybe an html meta tag that blocks all XMLHTTPRequests until
| the user consents. i don't think it would even matter if it was
| browser-specific
| dylan604 wrote:
| I think DoNotTrack shows how well webdevs will respect
| flag/switch/honor system type of ideas. They won't.
| zamadatix wrote:
| And WebSockets and WebRTC and form submissions and so on.
| It'd be a whole policy for many things like gp suggests not
| just blocking one function.
|
| Of course that being said the policy would basically have to
| be "disable network" at a trigger point not just uploads as
| you can just as easily leak large amounts of data via
| triggering GETs by making img placeholders come into view or
| other equally tricky things that can't be distinguished from
| "app is just still loading".
| aeharding wrote:
| Even just basic hyperlinking would have to be heavily
| restricted.
|
| For example...
|
| 1. Cross origin hyperlinks would have to be completely
| disabled 2. Same-origin URLs would need all url information
| (query params, path, etc) to remain completely client-side.
| The only thing transmitted to the server would be the base
| domain.
|
| It's interesting to think about, at least.
| kevincox wrote:
| That would be very simplistic. It means that all resources you
| need must be inlined in the initial download. This makes it
| hard to balance reasonable update time and log caching,
| especially if you have a slowly-updating ffmpeg.wasm and a more
| frequently updated UI.
|
| Maybe it could add the CSP at some point after everything is
| loaded and then the badge appears? Of course you still want
| updates, how do you ensure that updates can occur without
| sneaking out information? Wiping all site data before
| downloading the new version would work but having local
| persistent data would be useful. Maybe all local data would be
| unavailable from the start of the new version fetch to until
| the no-network policy is applied?
| zamadatix wrote:
| Not sure that can exist separate from just being a completely
| "offline mode" switch. The most naive example being doing a
| bunch of GETs to www.datasucker.com/Base64EncodedDataHere.
| TicklishTiger wrote:
| Talking about online animation tools ...
|
| Does anybody know a site where one can create "zoom in
| animations"?
|
| I mean you upload an image, select the point where the animation
| should zoom in and get a "fly into the image" animation.
| devadvance wrote:
| I don't know if there's a pre-existing site that will do it,
| but you could do this with FFmpeg and therefore FFmpeg.wasm. A
| brief search [1] indicates that it would likely be about the
| combination of the right filters. Ostensibly, you could put
| those filter options into the FFmpeg.wasm demo app [2] (scroll
| down) and get your video out.
|
| [1] https://stackoverflow.com/questions/54547061/ffmpeg-
| animatio...
|
| [2]https://ffmpegwasm.netlify.app
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(page generated 2021-09-13 23:01 UTC)