So I have a youtube page open where I can watch a video.
But this video was taken down by the user. My open page still has the video, if you go to it again (refresh) the new page does not.
Since I have the video loaded in my browser tab (chrome), how can I go about finding the actual file and saving it?
In the old days of YouTube, it may have been possible to find the single video file on your harddrive and save it, but this is no longer the case. As explained in this Computerphile video, all YouTube videos are now split into tiny pieces and downloaded piece by piece.
You can observe this for yourself if you open up Chrome (or Firefox's) Dev Tools and watch the nnetwork tab. You'll see:
all of the pieces of the video loading bit by bit.
One additional thing you'll learn from the Network tab is that the videos are downloaded as octet streams, so you won't be able to find the links to the pieces hidden in the DOM.
One thing you migth try is, in the Network tab, clear the results and then move the cursor to the beginning of the video. You should see the streams come up again. Right click on the path name and then do a "save as", and save it as 0000.mp4 (or whatever), for all the pieces. You should be able to reassemble these pieces in any video editing software. I tested this by getting two pieces from a random YouTube video.
I couldn't find anything that doesn't require a restart (and hence reload) of Chrome.
One (kludgy) hack if possible, though, would be to run a screen video capture and play the video.
I have done this long back using IE6, i.e. fetch the file from the temporary files location and rename it to the extension flv.
The following links should point you in the right direction, but can't say it will work for sure, as I believe recent chrome versions seem to have a defensive cache implementation.
Ubuntu Forum solutions
You might need to tweak the above for your use.
Run a screen recording/capture program such as:
Screenr
CamStudio
Then edit out the youtube bar if its visible.
The buffered video is cached at the following location:
C:\Users\<user name>\AppData\Local\Temp\flaxxxx.tmp
Note you have to change to whatever user you are using, and xxxx is a random number. Also, the .tmp file might be hidden, so make sure your windows explorer is displaying the hidden files.
While the tab is open, you won't be able to copy the file, but if you close it, the file will be automatically deleted. For doing so, download HoboCopy, extract it and after that, run cmd as administrator. Change the directory on the console to the directory where you have extracted HoboCopy and type the following command:
hobocopy C:\users\<user name>\Appdata\Local\Temp C:\videos fla1234.tmp
<user name> - replace with your windows username
C:\videos - the directory where you want the video to be copied to
fla1234.tmp - the name of the file to be copied.
Wait for the copy to be done and then you can rename the destination file, changing '.tmp' to '.flv'. This file can be played with any FLV supporting media player.
i find this software to get the video from temp files folder and play it http://www.nirsoft.net/utils/video_cache_view.html
Video file is cached, therefore suggested ways can help you to save the file. But if you deal with same problems I offer using IDM(Internet Download Manager). After installation of this application for every online video stream (e.g. all flv files in youtube) IDM brings a small picture that you can click on it and downloading will be started automatically without need of any configuration.
You have to install a browser extension to download YouTube videos. You won't find a simple URL for an mp4 file in the HTML source. Try googling "youtube downloader" + your browser name.
As far as I recall, YouTube videos are not served as a continuous HTTP resource, but instead divided into small chunks and assembled client-side by the Flash player. This is why you can jump into the middle of a video, without having to buffer the first half of the video.
Generally speaking, YouTube don't want you to rip their content, so they aren't exactly making it easy for downloaders.
Related
I have two live videos feeding an encoder which creates H.264 chunk files and an HLS manifest which is being served by an apache web server.
A browser page using video.js shows a player. Pressing "play" on the browser properly plays the video. It works well.
However, if we change video sources (by flipping the switch in the picture below), there is a considerable delay (10 seconds) before the new content is displayed in the player. I'd like to get that to 3 seconds.
It appears that video.js and/or the HTML5 player in browser is buffering that amount of content. (if you delete the files on the web server, kill apache, or even pull the ethernet cable, the video keeps on playing!)
A button on the web page controls the switch. When clicked, I would also like to clear or reset the player so that it immediately re-reads the index.m3u8 manifest and downloads the new chunks.
So far, haven't found anything promising searching the internet or in the video.js API docs. There are lots of articles on API calls for fetching the current buffer percentage but cannot find any API for clearing it altogether.
Any ideas?
The encoder is set for 3 second chunks and the playlist depth is set for 10 entries.
I had a similar problem. Since i could not find a reliable API for this, i came up with a rather dirty workaround to clear the buffer:
var ctime = player.currentTime();
player.currentTime(0);
player.currentTime(ctime);
This currently works for me in all major browsers.
I am trying to create an ios Wallet Event Ticket. I managed to give all the info I needed to create the pass.json and I have signed and zipped it. When I try to open this on a Mac, I am able to see the pass in the preview. When I email it and try to open it from an iPhone, the screen just goes to the main screen as if it crashed.
After lots of experimentation I found out that if I add at least one of t he images (icon) I am able to see it in preview and add it to the Wallet.
Since I do not care to add any image, this seems way too much just to make it work.
The question is, are images required in the pass? And if not, why does it not work without them. I repeat, it was displayed on Mac preview either with or without the image file.
Yes! manifest.json required the image correctly, moreover the pass.json also need to ensure everything is correct. Some elements must add in json for iPhone open, for example:serialNumber, webServiceURL, authenticationToken, relevantDate
Also, iPhone open .pkpass as difference format with mac. In my case , the signature file is wrong will also make the .pkpass file cannot open in iPhone.
I am developing vb.net Windows application for playing the video file.
I have added a video files in embedded resource in this way:
Project->Properties. Then select the "Resources" tab. Next Select
"Add Resource"->"From Existing File".
I am able to play the one video,with following code
Dim FilePath = Path.Combine(Application.StartupPath, "My video.mp4")
If (Not File.Exists(FilePath)) Then
File.WriteAllBytes(FilePath, My.Resources.video1)
End If
AxWindowsMediaPlayer1.URL = FilePath
AxWindowsMediaPlayer1.Ctlcontrols.play()
The video is working fine , but problem is, application creates the video file in the bin folder every time.
You can see here...
My application's Current exe size in 200 MB, as I have added many videos into the resources.
What the use of adding video into resources, if it going to produce new video file every time ?
I have did same thing with images, I have added images in resources
which used in the app,
but I don't req. to carry these images as well , it dont produce the image after running the app.
I can put the exe on any machine and app gets run with those images perfectly...
Is there any way to play the embedded video , from resource itself
without creating the video file ?
Some thoughts, then a possible solution:
I wouldn't recommend embedding large videos in your .exe as it creates a huge executable.
There's only so much you can do to prevent piracy. Even if you
prevent them from copying the local video file, they could still use
software to record their screen.
Having said that, what you'd ideally want to do is play from a memory stream instead of a file. But AxWindowsMediaPlayer can't play from a stream.
What you might be able to do is play it from a virtual file system which mimics a local file but in memory. Here's an SDK that allows you to do that: http://boxedapp.com/encrypted_video_streaming.html
From the documentation: Why and when is it useful? "When an application uses DLL and files, which are to be kept secure, and because of that you can't save them to disk"
They have examples for VB.Net including using the AxWindowsMediaPlayer.
Also, it does require purchasing a developer's license.
Just to confirm, the image always downloaded in another thread which is different with the page text loading thread??
I put in my page, refer to a image on internet, the all text always show up firstly.
What do you think?
I think that html file contains all the prose and refers to pictures, so in whatever threads you do that you first download the text. Whether it's rendered before pictures are downloaded is up to UA and they may or may not be the same in this respect.
Depends on the Browser and the website. In most cases the Browser loads the "main html" where there are references to the Pics and other things.
If the Website loads most of the text-content via AJAX it could be kind of the other way round.
.. but in most cases you are right
I've been trying to figure this one out for about a week now and just
can't come up with a good solution. So, I figured I would see if anyone could help me out. Here's one of the links that I'm trying to scrape:
http://content.lib.washington.edu/cdm4/item_viewer.php?CISOROOT=/alaskawcanada&CISOPTR=491&CISOBOX=1&REC=4
I right-clicked to copy image location.
This is the link that is copied:
(Can't paste this as a link because I'm new)
http:// content (dot) lib (dot) washington (dot) edu/cgi-bin/getimage.exe?CISOROOT=/alaskawcanada&CISOPTR=491&DMSCALE=100.00000&DMWIDTH=802&DMHEIGHT=657.890625&DMX=0&DMY=0&DMTEXT=%20NA3050%20%09AWC0644%20AWC0388%20AWC0074%20AWC0575&REC=4&DMTHUMB=0&DMROTATE=0
There is no clear image URL being displayed. Obviously that's
because the image is hidden behind some type of script. Through trial and
error I found that I can put ".jpg" after the "CISOPTR=491" and then the link becomes an Image URL. The problem is that this is not the high-resolution version of the image. To get to the
high-resolution version I have to change the URL even more. I found a lot of articles #Stackoverflow.com to mention trying to build a script using curl and PHP, I have even tried a few of them with no luck. "491" is the image number and I can change that number to find other images in the same directory. So, scraping a sequence of numbers should be pretty easy. But I'm still a noob at scraping and this one is kicking my butt. Here's what I've tried.
Get remote image using cURL then resample
also tried this.
http://psung.blogspot.com/2008/06/using-wget-or-curl-to-download-web.html
I also have Outwit Hub, and Site Sucker, but they don't recognize the URL as an image file and fo they just pass right ove it. I used SiteSucker overnight and it download 40,000 files and only 60 were jpegs, none of which were the ones I wanted.
The other thing I keep running into, is the files I have been able to download manually, the filename is always either getfile.exe or showfile.exe and then if I manually add ".jpg" as the extension I can view the image locally.
How can I reached the original high-res image file, and automate the download process so that I can scrape a couple hundred of these images?
I right-clicked to copy image location. This is the link that is
copied:
You noticed the title has ".exe" in there. Look at the stuff in the query string:
DMSCALE=100.00000
DMWIDTH=802
DMHEIGHT=657.890625
DMX=0
DMY=0
DMTEXT=%20NA3050%20%09AWC0644%20AWC0388%20AWC0074%20AWC0575
REC=4
DMTHUMB=0
DMROTATE=0
Strongly implies the original source of this image is in a database or something and it is being passed thru a server-side filter (not sure if that is what you meant by "some kind of script"). Ie, this is dynamically generated content, not static, and the same caveats apply as would to dynamic text content: you have to figure out what instructions to provide the server to get it to cough up what you want. Which you pretty much have in front of you...if SiteSucker or whatever won't deal with it properly, scrape the address yourself using an HTML parser.