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I know that in Windows, Internet Explorer stores .flv temp files in temporary folder (C:\Users\%username%\AppData\Local\Microsoft\Windows\Temporary Internet Files) when viewing YouTube. And the same make and Google Chrome in Windows (C:\Users\%username%\AppData\Local\Google\Chrome\User Data\Default\Cache). So it's easy to find a copy of that .flv file.

How about Chromium in Ubuntu? Does it store browsing temp data and where?

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5 Answers 5

up vote 9 down vote accepted

I wrote a small bash script that automates the excellent solution from Radu:

#!/bin/bash

pidNum=$(ps ax | grep flash | grep chromium | grep -v "grep" | sed -e 's/^ *//g' -e 's/ *$//g' | tr -s " " | cut -d " " -f 1)
procNum=$(ls -l /proc/${pidNum}/fd | grep Flash | tr -s " " | cut -d " " -f 9)

filename=$1
if [[ "$filename" == "" ]]; then
    filename=$procNum
fi

echo "Copying /proc/${pidNum}/fd/${procNum} to '${filename}.flv'"
cp /proc/${pidNum}/fd/${procNum} "${filename}.flv"
ls -lah "${filename}.flv"
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I made a little research and now I can come with the answer that is not so simple as it seems at first sight.

I searched a lot on Google, and almost everything is pointing to the ~/.cache/chromium/Default folder. It’s the folder where you should find google chrome’s cache files. But there are no big flash video files (like YouTube has), just small ones.

In the end, to answer the question, I came to these conclusions:

  • First, you have to open an YouTube video and let it stream from internet.
  • In a Terminal (Ctrl+Alt+T), you should get PID of Chromium that use Flash Player plugin. You can use various commands, but ps will do just fine: ps ax | grep flash.
  • Once you have this PID you can find out the name of video file that just was streamed on Youtube: ls -l /proc/[*PID*]/fd | grep Flash. You will see as result something like this:

    lrwx------ 1 [*user*] [*user*] 64 mai 2 09:48 [*video file name - is a number*] -> /tmp/FlashXX4PeKRY (deleted)`
    

    And here is the answer of the question: the last video file streamed on YouTube and cached on the system is:

    /proc/[*PID*]/fd/[*video file name - is a number*]
    
  • Now, if you want, you should copy them anywhere on the system:

    cp /proc/[*PID*]/fd/[*video file name - is a number*] ~/Videos/[*new video file name*].flv
    

    And now you have the last video watched on Youtube in your personal Videos collection.

enter image description here

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I do it manually like this: define this alias in /etc/bash.bashrc

alias findflash='find /proc/ -maxdepth 1 -type d -exec lsfd.sh {} \;'

and create this script in /usr/local/bin/lsfd.sh

#!/bin/bash
ls -l $1/fd/ 2>/dev/null 3>/dev/null| grep -i 'flash' 1>/dev/null  2>/dev/null 3>/dev/null;
if [ $? -eq "0" ]; 
then 
echo $1/fd/;
ls -l $1/fd/ | grep -i 'flash';
fi

result:

root@juanmf-V570:/tmp# findflash 
/proc/31591/fd/
lrwx------ 1 root root 64 Aug 19 23:59 37 -> /home/juanmf/.config/google-chrome/Default/Pepper Data/Shockwave Flash/.com.google.Chrome.9Oc0fE (deleted)
lrwx------ 1 root root 64 Aug 19 23:59 38 -> /home/juanmf/.config/google-chrome/Default/Pepper Data/Shockwave Flash/.com.google.Chrome.hcEvxv (deleted)

then I know where the files are and use mplayer to see wich one I want. then manually copy.

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Chromium keeps its cache files in various folders which might change from time (depending on the version?). So you should perhaps browse all of them to find what you are looking for.

And they are:

  • /home/$USER/Media Cache
  • /home/$USER/.cache/chromium/Default/Cache
  • /home/$USER/.cache/chromium/Default/Media Cache
  • /home/$USER/.config/chromium/Default/Cache
  • /home/$USER/.config/chromium/Default/Media Cache

The youtube files you are interested in are mostly likely to be under one of the Media Cache folders, but without any file extension. Luckily, unlike Windows, Linux often detects file types irrespective of the extension. So you might recognize them with video file icons or even thumbnails.

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In these folders are no big flash video files, just small ones. –  Radu Rădeanu May 1 '13 at 21:52

Chromium throws files into .cache/chromium/Default under theCache and Media Cache folders.

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Hi, when you post something you can take advantage of the formatting facilities that appear just above the text box when your drafting your answer. This is basic markdown stuff. You can look at some edited questions and answers to see how it's done. –  user25656 May 1 '13 at 12:41
    
I searched there, but nothing about by video files from You Tube (or others). So, not the right answer... yet. –  Radu Rădeanu May 1 '13 at 12:49
    
@vasa1 -> Hey how about you not edit my posts? That'd be great. I'm well aware how to use markdown. Radu -> It's not going to blatantly give you the .flv file, you'll need to pretty much convert all the files to .flv to figure out which one is a video. It's really just best to use something like KeepVid. In terms of "not the right answer", sorry to disappoint you but it is. That is where Chromium and Chrome save all their cached files. –  JoshStrobl May 2 '13 at 12:43
    
@JoshStrobl, sorry about that! –  user25656 May 2 '13 at 12:54

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