The quick question: is there a pure PHP library that can extract a frame from the video to use as the thumbnail? I guess the answer is "no" but let me know if I am wrong :-) ffmpeg wrappers will not go, since I want this feature to work on most hostings without special PHP modules or binaries to launch.
There might also be some tool to do this on the client side with flash for example... This also acceptable. I'll just have to upload the flash-generated content to the server.
This script claims to be able to do it just by using GD
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I'd like to be able, being provided a link to a website for example, to generate a thumbnail of that website page much like does the 'new tab' page of Chrome for example.
Is it possible with PHP?
Look into using wkhtmltopdf. It is a linux binary that generates PDF/PNG images of web pages using the webkit engine.
It is not possible with PHP, but you may use PHP to call another application. Example is to use http://derailer.org/paparazzi/ on the Mac. You can call this from PHP.
you have to start a web browser on the server (via exec()), which renders the page and saves it as an image. For example you can do this with firefox and savepng plugin. With plain PHP you won't be able to do this, unless you do not implement an HTML/CSS rendering engine.
Isn't it simpler to call a webservice? http://www.webresourcesdepot.com/10-free-website-thumbnail-generation-services/
You need to have strong knowledge of Linux administration. As Darhazer posted, using exec command you can connect wkhtmltopdf, or similar tools, with PHP frontend. You also need to have a linux box, that does not have safe mode ON = this eliminate us One of these examples may be http://www.domdigger.com/screenshots/ (you can set up weekly automated screenshots for free there as well).
Hope that helps.
I would like to extract a thumbnail from a RAW image file, like Canon's .CR2 or Nikon's .NEF. I've understood that this can somehow be done with ImageMagick, but haven't grasped if it's possible through the PHP wrapper.
Are there any good solutions? Preferably using the built in thumbnail for speed.
Yep, iMagick (the php version of ImageMagick) can handle these extensions: http://www.imagemagick.org/script/formats.php
Here's a great set of tuts that got me going with Imagick. The owner responded to a few of my questions quickly, and despite a bit of a language barrier was able to easily get me through my hurdles
As an aside, I've begun using Gallery to do image admin. No need to worry about thumbnailing, uploading, etc....it's all automatic. Then on the front end I can do jquery magic (getting photos via php query from the gallery database tables) to make it look really good.
Likely, if PHP's imagemagick libraries are to support this, they would be drawing from some functionality exposed through imagemagick's 'identify' command line tool (as the tool would be itself exposing functionality in the imagemagick libraries). Looking at the documentation for this tool, it doesn't look good. If you tried running identify -verbose, theoretically, the thumbnail information would appear in there somewhere, perhaps as an encoded value. Try it yourself: if it does, maybe you could possibly further extract the information returned from identify, either through the imagemagick functions in PHP (though I don't see any past the Exif libraries which only work on JPEG), or by scraping the return of a PHP system call to the identify tool.
Either way, doesn't look likely.
Benjamin Horn has submitted a complete example about reading the requested data and even saving it locally for later use.
Check this out:
https://benjaminhorn.io/code/extracting-thumbnails-from-camera-raw-files-cr2-and-nef-with-php/
I have my own video sharing app,
My question is... is there any library,script or something else, to help me in rotating videos whatever their file extension is?
Many peoples are uploading videos but sometimes i found video (guessing shared with iphones or mobile phones) and i see them horizontally instead of vertically...
Does anyone have any ideas how to rotate them dynamically?
Im not familiar with any "libraries" that will do that. I think your better bet would be to find a command-prompt-enabled video software package (like Any Video Converter [See Q7]) that PHP can execute via command prompt on the fly.
PHP doesn't do that, and there are no extensions that I know off, made for that purpose.
You can use ffmpeg to manipulate videos, by calling it from your scripts (see shell_execute() and such functions). Reading the ffmpeg documentation will help you figure what can (and can't) be done with that powerful tool.
I need a way to extract the audio from some video (in PHP). I have the video streaming in from YouTube, so I would really like it if it were on the fly streaming, not I have to save it to a temp directory and process it there (though that is acceptable.) Thanks, Isaac Waller
Edit: to be more specific, I have a MP4 and I want it to be a MP3.
You're going to want to use something like ffmpeg and call it using php's exec command. If you look around in the docs, I'm sure you can figure out what flag to use to only get the audio.
I've used this app before on a project for live transcoding of video, works like a charm. Just make sure your server has it correctly installed.
Mplayer should do this for you, and there are libraries and codecs that you can call (PHP supports C libraries) which will strip the video from the AV stream on the fly.
Given that you're targeting youttube your job is a bit easier because they use a very small subset of file encodings.
If you take the time to learn the format, you can very easily remove the video stream on the fly and return only the audio stream.
If you give a little more information, such as what you're encoding it to, or where it's going to end up we may be able to help more specifically.
-Adam
I need to create Snapshots / Thumbshots / Site preview a-site.com.
There are some site as thumbshot.org that meets with I need. But I do not want to use an external service, not to depend on others for my project (What would happen if they close the site?)
For this reason, I am looking for some project to let me do this.
Any idea?
On windows you can use GD's imagegrabwindow() function.
Edit: The help page actually shows you how to grab a screenshot from IE.
There isn't anything in the PHP library to do this - you're looking at setting up an external application (with a queue) to take images, although you can of course use PHP to add items to the queue.
There are a couple of Windows functions in GD that takes screen shots of the computer (webserver - not the client) so perhaps you could write a script in PHP to do this.
Edit: Was thinking of these: imagegrabscreen and imagegrabwindow. I'm not sure they will do what you want however (even in full screen mode Firefox has ablue bar at the top of the screen - not sure about other browsers). However, Pierre has something on these functions if you're interested.
I'd suggest writing an application in another language (I assume .NET has something) to do this for you.
Edit: This page tells you how to do it in C#
There's not much PHP would do for you in this situation. You'd need a complete (X)HTML rendering engine with CSS-support, possibly also with JavaScript support.
That, or use some kind of kinky script that would launch a real browser, and take a screenshot out of that. Either way, PHP is probably not the right tool for the operational part.
There's a Firefox extension that converts the webpage you're viewing to an image:
http://www.screengrab.org/
http://addons.mozilla.org/en-US/firefox/addon/1146
If you're willing to get creative, it might be possible to access this problematically.
Thanks to all.
I found a pseudo-solution, (using dcom + imagegrabscreen + wamp).
I need to resize the final.png with gd, because the png is equal to resolution of client (in my home, is a picture of 1650*1280).
Whe I end this, I will post a .zip file to dowload
Thanks again
(But if anyone have a better idea, I am happy to see that)
PS: Sorry for my english