$ ffmpeg -f x11grab -video_size 1920x1080 -framerate 25 -i $DISPLAY -f alsa -i default -c:v libx264 -preset ultrafast -c:a aac screen.mp4 To take a screencast screen.mp4 with lossy encoding and with audio:

Here, the Huffyuv codec is used, which is fast, but produces huge file sizes. $ ffmpeg -f x11grab -video_size 1920x1080 -framerate 25 -i $DISPLAY -c:v ffvhuff screen.mkv To take a screencast screen.mkv with lossless encoding and without audio: Where -video_size specifies the size of the area to capture. $ ffmpeg -f x11grab -video_size 1920x1080 -i $DISPLAY -vframes 1 screen.png See FFmpeg encoding wiki and ffmpeg(1) § EXAMPLES.įFmpeg includes the x11grab and ALSA virtual devices that enable capturing the entire user display and audio input. However you may want to force the number of threads available by the parameter -threads number.

FFmpeg should automatically choose the number of CPU threads available.

Failing to do so may cause parameters being skipped or will prevent FFmpeg from executing.

It is important that parameters are specified in the correct order (e.g.

See the GNU General Public License for more details. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Please see the Contribute page for details. You can help this project by translating, writing user documentation or packaging. QWinFF is free software licensed under GPLv3. You can get the latest stable version in downloads or check changelogs for more details. QWinFF is written in Qt4/C++ and currently runs on GNU/Linux and Windows. And don’t worry about the audio audio will also be rescaled without changing the pitch. There is also an option that changes the speed of the video, making it possible to create slow-motion or fast-motion animations. Starting from version 0.2.0, QWinFF features an interactive video-cutting interface that lets you watch the video and select the time range you want to convert. QWinFF also comes in handy when you need to make a video clip for a larger video. Advanced users can also adjust conversion parameters like bitrate and sample rate in detail.

QWinFF provides an intuitive graphical interface and a rich set of presets to help you use ffmpeg easily without having to type a single command.

FFmpeg can read audio and video files in various formats and convert them into other formats. QWinFF is a GUI for FFmpeg, a powerful command-line media converter.

Ffmpeg gui windows for audio