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• PNG Compression

  - by T Pops

  At work, on certain projects I have to manage a lot of images. Most of the time PNG files work the best for what I'm doing. With such a huge amount of images, I've tried using PNG compression with PNG Gauntlet but sometimes the file doesn't really change and sometimes PNG Gauntlet reports it would've made the filesize bigger! Am I just maxing out the compression or is there something more I can do?

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• Joining H264 *without* re-encoding

  - by jdmuys

  I have two halves of a single show in two .MP4 files, encoded in H264. I would like to join them without re-encoding. Is this possible? I managed to create a joined video as a Quicktime file (.mov) using Quicktime Pro, but then Quicktime Pro will not convert it back to .MP4 without re-encoding. This may be because looking inside the .mov file, the two H264 videos are in there still separated as individual "objects". I am also struggling with MPEG StreamClip without reaching a real solution. But I may have missed something. Note that I do not have the same issue with MPEG2 files. I can export them to a .MPEG container or a .TS file for example, and then I can join them without re-encoding using MPEG Streamclip. Any suggestion welcome, preferably using Mac software.

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• Please help to troubleshoot the issue with Inspiron 8600 laptop

  - by user34300

  Hello! I have a Dell Inspiron 8600 laptop which display stopped working all of the sudden. It started to show a purple fog pattern along with some color vertical lines. I talked to Dell support and they told me that is a screen gone bad and I should get a new one which I did. But surprisingly the new display won't work either! The pattern on the screen is different but still no picture. So I tried to connect the old display to another laptop (Lenovo Z61) and it turns out it works just fine with it! So please help me to identify the cause of the issue. I think it could be a video card but the external display works flawlessly. I appreciate your thoughts about it so I won't need to buy spares which I don't need. Thank you! P.S. Please do not suggest to contact Dell support again.

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• Boxee on Dell 32in TV causes headaches, how to troubleshoot?

  - by brown145

  I have revamped an old pc, installing 4GB ram and a 256MB video card so that I could run Boxee to a Dell W3200 series TV that came with my apartment. It is connected via VGA, resolution is 1360x768, 24bit color, 60Htz refresh rate. Unfortunately, every time I use it I end up with a headache after less that 30 min. I have had my eyes check recently, and am able to play xbox (connected via hdmi) on the same TV without problems. What are the potential causes? My system seems to well meet or exceed the min requirements for boxee, XP, AMD Atholon 64 X2 Dual Core, 4GB RAM. Could it be the VGA cable? What is the most cost effective way to trouble shoot?

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• Need an idiot-proof picture resizing program for Windows.

  - by marcusw

  My friend needs to resize some pictures as part of a web publishing job, but he is rather clueless when it comes to computers. I am in charge of teaching him how to do this, but only have Linux (albeit with Wine installed) at my disposal for testing. Could you guys recommend a fast, easy, batch-capable, and hopefully open-source program that will resize pictures to the resolution he wants? It doesn't have to be anything fancy, but it needs to be quick and easy to use. Thanks!

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• How can I easily correct slight rotational misalignment in scanned images

  - by AndrewR

  I've got a whole lot of scanned images ( 500) the majority of which were scanned with the paper not completely square. They need to be rotated about 1-5 degrees to be aligned again. Is there any software that does this? I know some scanner drivers do but mine doesn't seem to.

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• Linux: Tool to monitor every process, execute-command, shortly, monitor what's happening at the moment

  - by Bevor

  Hello, due to a freeze problem of my Ubuntu 10.10 (it is not isolatable) I though about logging every executable of the kernel somehow in any file to see what happens last when a freeze occures the next time to not lose valuable information. I found acct but this is obviously not what I'm looking for. Actually it logs just user commands and those things. I need something which logs in a much "deeper" level. The best would be some kind of script which records every interrupt. Does anybody know some tool like that?

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• Laptop display not working unless DVI cable is plugged in

  - by marien

  I have a Lenovo ThinkPad T420 with an i5 processor and integrated graphics. I dropped the laptop and now the screen is not working. I replaced the screen and it is still not working. It shows the BIOS and then at Windows login the screen gets all static looking. But if I plug in a DVI-to-HDMI cable the laptop starts and works fine. Even the external display works and the laptop display works too. As soon as I unplug the cable the screen crashes and is all static. I cannot figure out the problem. The video works because the external screen still works. How can I fix this?

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• Is there a free painting tool for the mac?

  - by Another Registered User

  What I need is pretty simple: Copy & Paste image regions (parts) in/from an big image Compose an big image out of small ones Draw lines, maybe even arrows Ability to move images around after pasting them in, and to select them again to move them again Save the final image I have photos of people and want to make a big image that shows who is related to who by connecting these photos with arrows or lines. Must not look absolutely great. I need that only a few times so I look for freeware / open source...

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• Read non-blocking from multiple fifos in parallel

  - by Ole Tange

  I sometimes sit with a bunch of output fifos from programs that run in parallel. I would like to merge these fifos. The naïve solution is: cat fifo* > output But this requires the first fifo to complete before reading the first byte from the second fifo, and this will block the parallel running programs. Another way is: (cat fifo1 & cat fifo2 & ... ) > output But this may mix the output thus getting half-lines in output. When reading from multiple fifos, there must be some rules for merging the files. Typically doing it on a line by line basis is enough for me, so I am looking for something that does: parallel_non_blocking_cat fifo* > output which will read from all fifos in parallel and merge the output on with a full line at a time. I can see it is not hard to write that program. All you need to do is: open all fifos do a blocking select on all of them read nonblocking from the fifo which has data into the buffer for that fifo if the buffer contains a full line (or record) then print out the line if all fifos are closed/eof: exit goto 2 So my question is not: can it be done? My question is: Is it done already and can I just install a tool that does this?

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• Need an idiot-proof picture resizing program for Windblows.

  - by marcusw

  My friend needs to resize some pictures as part of a web publishing job, but he is rather clueless when it comes to computers. I am in charge of teaching him how to do this, but only have Linux (albeit with Wine installed) at my disposal for testing. Could you guys recommend a fast, easy, batch-capable, and hopefully open-source program that will resize pictures to the resolution he wants? It doesn't have to be anything fancy, but it needs to be quick and easy to use. Thanks!

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• transform a trapezium into a rectangle

  - by Phuong Nguyen

  I use my iPhone to capture a painting. However, the angle was not perfect, so instead of getting a straight rectangle, I get a trapezium. However, I want to transform this trapezium back into a rectangle (using some affine transformation). However, I cannot find a good way to do it. Please advice.

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• Moving files with batch files from one pc to a server, to a another pc - worried about disk corruption

  - by AnchientAnt

  I use scheduled tasks that calls a batch file, that calls more batch files to move about three files from a pc, to a server, then to multiple other pcs. It all happens very quickly, as they are small files. Are there any pitfalls for how fast these transfers happen? I'm just mildly concerned about causing some disk corruption somehow. I use logic like 1. Call MapToPc if files exist then move file to folder on server. Disconnect 2. Call SendtoPCs If files exist (the files just moved to the server) then MapToPCs Move all files Disconnect All of this happens in about 2 secs or less. edit: this on windows 7, server 2003, xp respectively

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• Free tool to extract objects from photos

  - by hasen j

  Is there a free tool that's good at extracting objects from photos? It has to work on linux For instance, extracting a person from a photograph.

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• Why does F@H not bind to more than one core on Windows?

  - by warren

  I have been contributing to Stanford's Folding@Home project for some time with most of the computers I own. I just installed the Windows client on a new machine running Windows 7, but see that the F@H process only binds to one CPU core. Is this due to it being run on Windows? (I have the 64-bit edition of Windows 7 installed.) On the Mac and under 64-bit Linux distros, it will run across all available CPU cores.

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• Hard drive placement

  - by zm15

  I'm a video editor working with large HD files. I am building a new computer and need some help. I will be running 2 hard drives. One with the operating system and all the programs. And one with all the project files I will be working from. I am keeping these seperate. I will be purchasing a 10k rpm hard drive. So i will have a 10k rpm drive, and a 7200rpm drive. Should I put the OS on the faster drive, or put my working files on the faster drive?

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• Creating Apple iPhone/iPod-Like Icons

  - by Daniel

  What is the best way to create apple iPhone/iPod shaped icons, ideally there should be a website that you can upload images to and have an them shaped to the default shape, etc. Does this exists? What is the best way to great these icons? I did find this: http://elitebydesign.com/design-the-itunes-icon-for-the-iphone-and-ipod-touch/ But there should be a batch type program out there somewhere...

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• How do I transfer videos from DV camera to divx?

  - by Ward

  I have a videocamera that uses mini-dv tapes. In the past, I've transferred the files and made DVDs, but that was time- and disk-space- consuming. I wanted to find new tools and to figure out how to convert the videos to something smaller like divx but I didn't know enough about all the different formats to answer a previous question. Well, now I've done a bunch of research and I understand some of the details of video encoding, and in the process I wrote up some notes on the different formats involved in going from a DV videocam to divx or H.264 They're a bit rambling, but in case it's of any use, I'm going to post them as an answer. I'd be very interested in anyone else's answer as well.

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• Need to remove borders from multiple images

  I have a few hundred family images and they were all sent to us with borders that I would like to remove. Thankfully the borders are all the same size of 20 pixels and they are all .jpg so this will probably make things easier but im looking for a way to "batch process" all of them quickly so I dont need to open photoshop for each image and do it individually. Command line is preferred, the only big problem is they are mostly different sizes. Here is an example

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• Is there a word processor similar to MS Word which saves files as readable txt files?

  - by zenbomb

  I'm writing a paper together with my supervisor and would like to have a more sophisticated version control than *_291112_NEW_NEW_revised1.doc files. My supervisor is a non-computer person will never ever use LaTeX or git and loves MS Word. I'm therefore looking for an alternative to Word (I need commenting on text passages!) which stores the files as clean text (Markup for formating is fine), so I'm able to put them under version control on my side. I'm aware that git can also handle binary files, but I'd prefer the cleaner way of looking at the contents directly. If there's a way to automatically extract the text from word files, I'm fine with that too for now.

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• how to record videos from my laptop webcam?

  - by Nick

  I am not sure but I can't seem to turn on my webcam to record videos which I would broad cast somewhere later on. I have a HP G62 Laptop, and the cam turns on when I use programs like Skype and other Video Calling clients, other wise I can't turn it own, as I don't seem to know how. Laptop: HP G62 Notebook PC, AMD Atholon II P230 Dual-Core, Windows 7: Home Premium Can some one tell me how do I turn on my webcam and record videos? Or is there some sort of a software? I tend to read stuff I wrote in Word, so if there is a program I need it to be in the tray dock and not to bug me, while I am moving between different documents/web pages.

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• How to compress a huge amount of PNG images?

  - by T Pops

  At work, on certain projects I have to manage a lot of images. Most of the time PNG files work the best for what I'm doing. With such a huge amount of images, I've tried using PNG compression with PNG Gauntlet but sometimes the file doesn't really change and sometimes PNG Gauntlet reports it would've made the filesize bigger! Am I just maxing out the compression or is there something more I can do?

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• Nvidia driver on Windows 7 causing black screen

  - by inKit

  I have just installed Windows 7 on a desktop machine and for the first time ever have had a really tough time doing so, its normally a nice smooth install. This time I found that the monitor would simply go black after completing the installation. I tried reinstalling about 3 times and this did not help. After much searching I discovered that it was the nvidia drivers that were playing up with win 7, so i booted into safe mode, disabled the device, then rebooted to complete the installation. Windows 7 now works fine as long as the nvidia 9600 gt video card is disabled. The moment I enable it, the system requires a reboot and the screen will go black before even getting to the log in screen. I have tried downloading the latest driver and installing it manually, I have also tried uninstalling the device and allowing windows 7 to install it itself. Nothing seems to work. any clues?

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• 1080p HD TV + what is minimum spec pc required to stream HD movie files to it?

  - by rutherford

  I want to stream hi-def (non flash-based) movies from my future minimum spec pc to my network-ready HDTV. What I want to know is a) when streaming from a computer (local wifi network), is the computer's cpu/video/ram resources used to the same extent as it would be if playing back on the computers local screen? If not what are the differences? b) So with streaming hd content what is the minimum spec processor I should go for, if i) only one TV is acting as client ii) two TVs are simultaneous clients.

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• How to batch edit a list of files?

  - by user43144

  I have a list of files where I need to remove some lines that have been added yesterday by a spambot. The section I want to remove looks like this: ^M <script>[...] bunch of malware code [...]</script> That section seems to have been appended to the files, so I can be relatively sure it's the last lines of each file that contain this part. Now I know a bit of Linux, but not enough to do this via a command. How would I go about and do this?

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