If I was to embed a short video into a webpage of a website, but the actual video itself resided on a 3rd party server, would the website that has the embedded code use a small amount of its allocated bandwidth to play the video (because the video is actually located on another server) or would it use a larger amount of allocated bandwidth because you are still effectively watching the video through that website?
The only bandwidth required by the viewed webpage would be whatever code is being used to direct the browser viewing that webpage to the third party.
For example if you embed a youtube video on your webpage all your server send the browser viewing the webpage is your html file.
All the actual video and video player data is either browser side or on the part of the third party.
Tl;Dr
no bandwidth used to play the video, negligible amount of bandwidth used to send the extra line of html to tell the browser to play it.
Related
I need to play the video as base64 data URI format using HTML5 video tag on iPad and iPhone, which eventually helps me to make the video offline by storing it in websql,
I got a link which helped me to study the feasibility - http://iandevlin.com/html5/data-uri/video.php (if you take the view source of the link, you will see its well encoded in base64 format)
I tried this on most of the modern browser's like chrome & firefox in windows machine and safari in mac os, there it worked well.
So my hoped increased and I tried it in iPhone and iPad, Well its NOT working there! I am just getting a blank BLACK screen in place of the video control.
Also I am not getting any error in the safari debug mode as well. I would like to know whether we can play base 64 encoded video or it just a known issue for ipad and iphone...
to play video under HTML5 tag you need to provide its content source like images and video/audio files name without any path then only it works well i t
When Base64 media encoding is used you need to take in mind that memory consumption increases substantially, it's not the same as external media inclusion once media is not inside document and may be load in frames consuming only memory you really need.
Using Base64 need to load all the data to perform a decryption, and most mobile browsers take a lot of time to show video because their useful memory is very small (usually most of memory is consumed by operational system) and conversion take a long, when a processes take a long in mobile system, garbage collection know that as a zombie thread and kill it.
Actually is not a good idea assume you can use base64 for video in mobile browser, it should not work.
I have found iOS Safari to be pickier than desktop browsers regarding having the correct Mime type in the data uri. You should make sure you are using the correct one.
hi everybody i try to develop a web application that can control Smart tv like this guide http://samsungdforum.com/Guide/tut00024/index.html i work fine but now i would like to upload video from computer then it can display on the smart tv like image shown on the tutorial have any one any idea or exemple or suggestion about modification of code that can i do that can help me i would like to modify code of convergence tutorial than can sens message or send video client application to smart tv application
Sending files is covered by the tutorial. You can find API reference for this here.
Sending video file is not exactly a wise thing, because there is a 3MB limit for a file that can be sent using Convergence API. This API is designed for sending messages between TV and external client rather than files. If you want to launch video playback, send video URL from web app to the TV and let the TV download the video by itself.
I want to play youtube video with a certain resolution, like 360p
and capture the packets, and then extract the video from the packets
and then I want to analyzing/retrieving flash/html5 video information/metadata from these videos
BTW, are videos still with the same resolution when they are extracted from the captured packets?
note that these videos may not be complete
are there any good tools for analyzing/retrieving flash/html5 video information/metadata
like video bit rate, video resolution(like 360p, 480p), used audio/video codecs, video size and duration/duration
if the video is not complete, the information would ideally include the original video size, the actual video size, the original video length/duration and the actual video length/duration
I hope it is a script, if it is a tool. I hope it can be run through shell using command line coz I want automation.
A paper says perl could do this, but I don't how
thanks!
(long comment, not a complete answer)
IANAL, but your goals may not fit the YouTube Terms of Service:
Section 4. C
You agree not to access Content through any technology or means other than the video playback pages of the Service itself, the Embeddable Player, or other explicitly authorized means YouTube may designate.
Section 4. H
You agree not to use or launch any automated system, including without limitation, "robots," "spiders," or "offline readers," that […] sends more request messages to the YouTube servers […] than a human can reasonably produce in the same period by using a conventional on-line web browser. Notwithstanding the foregoing, YouTube grants the operators of public search engines permission to use spiders to copy materials from the site for the sole purpose of and solely to the extent necessary for creating publicly available searchable indices of the materials, but not caches or archives of such materials. […]
You may be able to access the required information directly using the YouTube Data API. Here is a reference, and here is a list of directly supported programming languages. Perl will work as well, as the underlying data format is plain XML or JSON.
You might also find these SO questions YouTube Player API: How to get duration of a loaded/cued video without playing it? and Youtube API get video duration from the XML enlightening.
I've m3u8 file with all the TS files. MPMoviePlayerController play them fine via http request on the streaming server. But I'd like to get the files locally in order to play them again later without any connection.
I managed to download m3u8 file and all the TS files locally on my device, I edited m3u8 files to point to local .ts instead of http ones, but I can't read them from this emplacement.
(VLC can do it well)
Is there a way to download the segments while playing (to avoid 2 downloads) and then to play them locally with MPMoviePlayerController or else.
.m3u8 is Apple HTTP Live Streaming, right? I think what you're trying to do simply goes against the design of that technology. You should expose the original file and allow it to be downloaded.
From what I understand, it's in the design of streaming that you don't get explicit access to the pieces in order to put them back together. For instance, Netflix uses streaming via Silverlight, and one of the benefits (to Netflix) is that it protects the data from being saved as if it were downloaded. Also, since HTTP Live Streaming allows a stream to switch bitrates on the fly, it's designed such that each time slice can be encoded at any number of bitrates, and none of them is canonical.
In theory, there might be a way to collect all the slices for a particular bitrate and re-encode them into a single video. But Apple's playback APIs are not going to give you that opportunity.
Instead of HTTP Live Streaming, consider progressive download. Just serve the original video file (transcode it to something the iPhone likes if necessary). If your server is configured properly, the playback APIs will do small requests to get particular chunks of the file, rather than the whole thing in one go, and it's a close second to proper streaming. I wish I could find where I read about this so I could give the proper name for it. Amazon S3 is set up to serve this way, if you need a quick solution.
But beware, Apple's docs say,
If your app delivers video over
cellular networks, and the video
exceeds either 10 minutes duration or
5 MB of data in a five minute period,
you are required to use HTTP Live
Streaming. (Progressive download may
be used for smaller clips.)
I'd like to get real-time video from the iPhone to another device (either desktop browser or another iPhone, e.g. point-to-point).
NOTE: It's not one-to-many, just one-to-one at the moment. Audio can be part of stream or via telephone call on iphone.
There are four ways I can think of...
Capture frames on iPhone, send
frames to mediaserver, have
mediaserver publish realtime video
using host webserver.
Capture frames on iPhone, convert to
images, send to httpserver, have
javascript/AJAX in browser reload
images from server as fast as
possible.
Run httpServer on iPhone, Capture 1 second duration movies on
iPhone, create M3U8 files on iPhone, have the other
user connect directly to httpServer on iPhone for
liveStreaming.
Capture 1 second duration movies on
iPhone, create M3U8 files on iPhone,
send to httpServer, have the other
user connected to the httpServer
for liveStreaming. This is a good answer, has anyone gotten it to work?
Is there a better, more efficient option?
What's the fastest way to get data off the iPhone? Is it ASIHTTPRequest?
Thanks, everyone.
Sending raw frames or individual images will never work well enough for you (because of the amount of data and number of frames). Nor can you reasonably serve anything from the phone (WWAN networks have all sorts of firewalls). You'll need to encode the video, and stream it to a server, most likely over a standard streaming format (RTSP, RTMP). There is an H.264 encoder chip on the iPhone >= 3GS. The problem is that it is not stream oriented. That is, it outputs the metadata required to parse the video last. This leaves you with a few options.
Get the raw data and use FFmpeg to encode on the phone (will use a ton of CPU and battery).
Write your own parser for the H.264/AAC output (very hard)
Record and process in chunks (will add latency equal to the length of the chunks, and drop around 1/4 second of video between each chunk as you start and stop the sessions).
"Record and process in chunks (will add latency equal to the length of the chunks, and drop around 1/4 second of video between each chunk as you start and stop the sessions)."
I have just wrote such a code, but it is quite possible to eliminate such a gap by overlapping two AVAssetWriters. Since it uses the hardware encoder, I strongly recommend this approach.
We have similar needs; to be more specific, we want to implement streaming video & audio between an iOS device and a web UI. The goal is to enable high-quality video discussions between participants using these platforms. We did some research on how to implement this:
We decided to use OpenTok and managed to pretty quickly implement a proof-of-concept style video chat between an iPad and a website using the OpenTok getting started guide. There's also a PhoneGap plugin for OpenTok, which is handy for us as we are not doing native iOS.
Liblinphone also seemed to be a potential solution, but we didn't investigate further.
iDoubs also came up, but again, we felt OpenTok was the most promising one for our needs and thus didn't look at iDoubs in more detail.