![]() ![]() This little script would read the raw 264 stream and wrap it inside an avi container. Lastly I have placed the file path and name for my output file. vcodec copy means use the same codec as original – no transcoding. sameq means retain the same quality as original. f avi means force avi as the output file type. Note that I have used the full file path. The above line, when entered in terminal would tell ffmpeg to use the file on my desktop named as video.264. You tell ffmpeg what to do with the file and you finally tell it what to output.įfmpeg /home/spreadys/Desktop/video.264 -f avi -sameq -vcodec copy /home/spreadys/Desktop/videoout.avi There are loads of tutorials online but in very simplistic terms you tell the computer to use ffmpeg. The good thing with scripting in ffmpeg is that its relatively easy to understand once you know the basics. I know that it can be done in Virtualdub using the decimate option but this is only suitable when the GOP structure is routine. OK, what do we need to do? The task was to identify and extract all the I frames from a video. You can then check its all ok but opening a terminal window and just typing ffmpeg This can be a bit daunting but there are very good step-by-step instructions online. This is fine for the majority of standard tasks but there is a lot more it can do if you build it yourself. If you install from the recommended repositories, then you will only get a standard ffmpeg build. The Synaptic Package Manager within Linux Mint These programs, with Graphical User Interfaces, are great for the quick and easy tasks but you can get stuck if you want to do something a little more taxing! ffmpeg has a very good userbase from all aspects of video and broadcast and its worth doing a little research to learn a bit more and see what can be done.Īs can be seen from my package manager, ffmpeg is not installed. This little utility is immensely powerful and used as the backend to many players and encoding programs in Windows, OSX and Linux. The video tool we are going to use is FFmpeg. ![]() We now need to work with our video – my test video is only small so its been dragged and dropped into my Mint desktop. It helps if your chosen distro has a good user community as it’s here that you will find the help needed to complete certain tasks. There are so many Linux distributions (distros), and each works slightly differently. Its now up to version 13, with a number of interface options. I have moved to Mint from Ubuntu as I prefer the build. This is the free version of VMware’s various packages and does support drag and drop between host and virtual.įor todays task I have used VMware player and a Virtual PC running Linux Mint 12. The other one for Windows hosts is VMware player. This is handy if you are configuring a linux system for a specific purpose and happen to corrupt the system files. Virtualbox is also good at creating snapshots of a virtual system. You can, however, set up a shared folder between the two. Virtualbox is open source but does not support drag and drop between your host PC and the virtual. For virtualisation, there are a number of free options. Its now over to the Linux virtual desktop. mpg.Īfter creating my test file I have opened it again in Vdub using the mpeg2 file handler.Īs can be seen from the following two images, the frame types are being correctly identified within the Group Of Pictures (GOP). You will then be able to place the desired file extension after your filename. Its important to remember that when you then select File > Save as avi, you need to select the dropdown for file types and select ‘all files’. Using the ffdshow codec plugin included in the Vdub pack, I have selected Compression > ffdshow, and then configured the codec to use mpeg2 at high quality. Having now got a 900 frame video I have placed a timecode overlay using a subtitle creator. I have then trimmed the video to 30 seconds. This is really easy to do by selecting Tools > Test Video and I have used RGB Cube.įor the purposes of this test I have then changed the frame rate to 30 FPS exactly. Using my Virtualdub pack I have created a test video.
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