video is a type of post where the primary content is a video file (recorded movie, animation etc.) typically with audio, and has growing support on the indie web. Video posts are supported by several silos.
How to markup
Use an h-entry as always, and then an HTML5
<video> element with class name
src attribute of the URL of the video file, e.g.
<video class="u-video" src="http://ben.example.com/camcorder.mp4" controls="controls"> alternate text content - like a transcript </video>
Alternatively (with poster frame and fallback img tag)
<video class="u-featured" controls poster="http://ben.example.com/camcorder.png"> <source class="u-video" src="http://ben.example.com/camcorder.mp4"> <img src="http://ben.example.com/camcorder.png" class="u-photo" /> </video>
<video controls="controls"> <source class="u-video" src="http://ben.example.com/camcorder.webm" > <source class="u-video" src="http://ben.example.com/camcorder.mp4" > alternate text content - like a transcript </video>
How to POSSE
To POSSE video, you may want to consider the following destinations:
- see https://dev.twitter.com/rest/public/uploading-media#videorecs
- Kyle Mahan has used curl to publish a video to Twitter via silo.pub
- Facebook: (need API docs link for posting video to FB!)
- Flickr: (need API docs link for posting video to Flickr!)
The following indie web sites have video posts.
Previously, video support was limited to autolinking mp4 files and animated GIFs since 2013-04-25, e.g.:
- http://aaronparecki.com/notes/2013/08/10/2/indieweb - screencast of doing a reply in the browser UI
- http://aaronparecki.com/notes/2013/04/25/1/original-post-discovery - MP4 recording of laptop screen demonstrating original-post-discovery.
The video files themselves appear to have one-off named (undated) permalinks at the same domain, and are only shown/visible/posted within the context of short notes posts.
Shane Becker uses Dark Matter to manually PESOS video posts from Vine and YouTube to http://veganstraightedge.com/videos as of 2013-07-07 (though older posts were ported over then), e.g. newest post appears to be from 2013-05-31:
u-featuredintending to communicate the
<source>tag inside that element with
src=attribute with the video URL.
<img>tag also inside the video element, with
u-photoas fallback content.
The video files themselves use datestamped indieweb subdomain URLs of the form:
- 2015-12-12 link appears to be 404 - content may have been removed.
- NEED ANOTHER video post permalink for werd.io!
Each video has a link to the file itself, in case it cannot be played in an embedded state in the browser.
- http://tantek.com/2015/346/t3/world-of-laughter-tears-hopes-fears (added a poster frame after the fact)
- manual POSSE: https://twitter.com/t/status/676580070698258432
- Posted with poster frame: http://tantek.com/2015/360/t2/best-starwars-speak-droid
- manual POSSE: https://twitter.com/t/status/680897393814994944
Temporarily (24h) the markup used an extra "u-photo" in addition to u-video as a hack to test whether Bridgy Publish's photo support would work for POSSEing video to Twitter and Facebook (which did not work, hence Bridgy issues 573 and 573 were filed).
- POSSE tweet: https://twitter.com/kylewmahan/status/676118863772188672
- YouTube videos are provided by adding a `YOUTUBE-URL' to a post - Embedded <video> posts are handled by using Org-mode attachments to add a video file (ogv, mkv, mp4) to the entry.
- Danielle McDonald's videos
- markup uses:
- markup uses:
unmung turns video podcast feeds into h-feed with video posts, e.g.:
- markup uses:
- markup uses:
Proto video examples
Examples resembling but not quite video posts.
- video file itself originally hosted on dropbox, moved to self hosted 2013-08-16 after discussion in IRC
- (could use domain routing of video.waterpigs.co.uk URLs to hide/abstract the backend storage provider).
- http://waterpigs.co.uk/notes/4REFKL/ - feeding geese
- http://waterpigs.co.uk/notes/4RRNfk/ - screencast of using the webaction toolbelt.
The video files themselves in general appear to have one-off named (undated) permalinks at the same domain, and are only shown/visible/posted within the context of short notes posts.
There is no explicit markup to indicate a video post, or that the img gifs are animated.
A simplest-case Indieweb video system might work like the following:
- Provide a file upload form, where the file input might have an
accept="video/*;capture=camcorder"attribute (the capture=camcorder attribute allows the device's camera to be used, where one exists)
- Videos can then be uploaded via both desktop & mobile browsers
- The uploaded file is stored in a location that can be made accessible to site visitors
- HTML5 video tags are used to display the video on the page.
Animated images / GIFs
Some animated image files may be considered to have movie-like properties. These can be uploaded like standard images.
- Facebook (length/size limit?)
- Flickr (90 seconds and 150MB limits.)
- Instagram (15 seconds)
- Twitter might be some information here: https://dev.twitter.com/rest/public/uploading-media#videorecs
- Vine (6 seconds)
- YouTube (limit depends on account, initially 15 minutes)
Video formats and compatibility
Video formats have two components: the codec, which is how the media content is encoded (typically separately for both video & audio), and the wrapper, which can be thought of as a file envelope that the video sits in. By far the most common video format is h.264 MP4 (video encoded using the h.264 codec and saved in an MP4 envelope file). This is also referred to as AVC, or MPEG-4 Part 10.
Typically, devices save at a vastly higher bitrate than is strictly necessary, in order to make their cameras seem like they take footage at the best possible quality. This has a number of adverse effects when it comes to actually using that footage: the files are often too big to send, and you can't simply upload a video file as-is and expect users to be able to stream it. A 5 minute iPhone video can easily clock in at 1gb in size. (The iPhone will then tell you you've got to wait for wifi to upload it.)
Most consumer devices record h.264 MP4 video; however, a vast array of incompatible video codecs and envelope formats exists, particularly when professional video equipment is taken into consideration. .3gp video is commonly created by older devices.
To make matters worse, supported video formats vary by browser. While many browsers support h.264 MP4, this is patent encumbered. As a result, some use the WebM envelope format with VP8 video and Vorbis audio streams. Firefox now delegates to the operating system for MP4 support, but there's no guarantee that this exists.
Web video often doesn't truly stream: it's simply downloaded progressively to the browser, which can begin playing it before the download is complete. Real streaming servers are available, which can adapt the bitrate of the stream to match the recipient's bandwidth.
To truly support HTML5 web video, platforms should think about:
- Supporting both WebM and h.264/MP4
- Transcode videos to a smaller bitrate for use with HTTP progressive downloads on the web (or consider a real media streaming server)
However, uploading a video file from your device and serving it from your web server is often sufficient.
If you choose to compress the file further, it's worth considering whether to transcode manually, using one of the many available applications across all platforms, or to integrate an open source encoder like FFMPEG or Handbrake on the server so as to generate friendly streaming versions once your video has been uploaded.
If you are accepting videos from third parties, you may wish to consider the legal implications. YouTube, for example, always archives the exact file that was uploaded, even though it serves a transcoded version to visitors. That way it can prove that it was not the originator of any copyright violations.
Ben Werdmuller works on latakoo, a service that provides apps to compress the video before upload (making for faster uploads from, eg, mobile devices and shared Internet), but it should be noted that this is a paid service that does not explicitly provide Indieweb support. (It does, however, have an API.)
There is certainly scope for an indie video app that records video, modifies it in the app, and uploads it to the location of the user's choice (or even makes it available for the user to download and re-upload).
Open realtime video
Q: Are there any non proprietary ways to do realtime video on the web?
A: Yes! WebRTC
Is an embed a video post
A: No. With just an iframe, you have no video file to point to. u-video is for the actual video file, not a script that does something to do something, nor an iframe that loads something to load something. Also, video posts should be your video, something you recorded, or animated yourself.