You can use hardware acceleartion to speed up encoding and reduce the load on your CPU. To grab the contents of the window named “Calculator”: ffmpeg -f gdigrab -framerate 30 -i title=Calculator output.mkv If you want to limit to a region, and show the area being grabbed: ffmpeg -f gdigrab -framerate 30 -offset_x 10 -offset_y 20 -video_size 640x480 -show_region 1 -i desktop output.mkv To capture all your displays as one big contiguous display: ffmpeg -f gdigrab -framerate 30 -i desktop output.mkv
Configure ffmpeg windows windows#
You can also use gdigrab as input device to grab video from the Windows screen. You can list your devices with: ffmpeg -list_devices true -f dshow -i dummy Or ffmpeg -f dshow -i video="UScreenCapture" -f dshow -i audio="Microphone" output.mkv If you want to capture the audio that is playing from your speakers you may also need to configure so-called “Stereo Mix” device. If you need audio too: ffmpeg -f dshow -i video="UScreenCapture":audio="Microphone" output.mkv You can refer to a list of alternative devices. This will grab the image from entire desktop. All rights reserved.Īll other trademarks are the property of their respective owners.Use a DirectShow device: ffmpeg -f dshow -i video="screen-capture-recorder" output.mkv You may continue with one of the two following tutorials:Ģ004 - 2006 © Copyright Salyens. The latest Salyens plugin for Java and native, multi-platform applications are now production stable, earning praises for their versatility, efficiency and small footprint. and more parameters available to the applications.refresh of selected (erroneous) parts of the picture.pro-active error resilience in the bitstream.use of the RTP payload header to correct errors.incremental (independent packet) decoding.incremental (independent packet) & multi-threaded encoding.We have been working hard over the past year to expand the set of features: You don't need to build libavformat (it won't work anyway), but the files libavcodec.dll and avcodec.h should be copied to an appropriate directory where the OpenH.323 development environment and your applications will find it. configure -extra-cflags="-mno-cygwin -mms-bitfields" -extra-ldflags="-Wl,-add-stdcall-alias" -enable-mingw32 -enable-shared -disable-a52 -disable-pp -disable-ffserver -disable-ffplay configure -enable-shared -disable-a52 -disable-pp -disable-ffserver -disable-ffplay Then, enter the directory containing the FFmpeg-0.4.7 library, and if it isn't already done, apply the patch. Please decompress FFmpeg-0.4.7 to the directory of your choice (in the MSys example above, F:/devel/ffmpeg-0.4.7).
Configure ffmpeg windows Patch#
You may also download a pristine FFmpeg version 0.4.7 here (external link), and apply the patch available here. It is recommended to use the fully patched FFmpeg-0.4.7 library available here. This directory is empty for all what Windows is concerned, but the MSys command line will make it appear like the directory chosen for FFmpeg-0.4.7 (in this example, F:/devel/ffmpeg-0.4.7). Add the line:į:/devel/ffmpeg-0.4.7 /home/Administrator/ffmpeg-0.4.7Īnd create the corresponding directory in MSys: For this, you need to edit the file /etc/fstab. Make a link to the directory containing the FFmpeg-0.4.7 library from your home directory in MSys. Make sure that MinGW was properly installed by checking that the file /etc/fstab (for a Windows editor, this is E:\Program Files\MSys\etc\fstab) contains the line: For the sake of this guide, we will assume /home/Administrator from now on.
To find out what is your home directory, type pwd at the start on the MSys command line.
Suffice to say that there is a direct correspondance between directories in MSys and Windows (please note the difference between slash and backslash):Į:\Program Files\MSys\home\Administrator\ffmpeg-0.4.7
MSys is a minimal, POSIX compliant system with support for the Bourne shell necessary to the configure scripts.įor in-depth Unix and Linux command line information, please refer to the MinGW and other websites. MinGW is the set of libraries and header files, combined with the GCC toolset and necessary to build an application under Windows.
Configure ffmpeg windows install#
If you are using Windows, you need to install the current MinGW and MSys, available here (external link). The following instructions will take you through the steps necessary to install MinGW and MSys, then build FFmpeg under Windows. Building FFmpeg on Windows HowTo Author: Guilhem Tardy
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