Bildschirmaufzeichnung – Vergleich der Anwendungen und deren Verwendung

Ankursinha, Brunovernay, Hhlp Version unknown Last review: 2021-02-14

Using Gnome’s native screencast tool

Gnome3 has already a screen recording functionality. Pressing Alt+Ctrl+Shift+R recording will start. There should be a red icon on the message tray in the right-bottom corner of your screen. If the message tray is hidden, Super+M will activate it. Pressing the red icon will stop the recording. The video is saved in the Video directory on your home directory on webm format.

Increase the duration of screencast videos

At just 30 seconds long the default length of screencast using this method isn’t ideal, particularly if you plan on making a lengthy video or need to demo a particular workflow or feature. It is possible to increase the duration of screencasts manually, by modifying the following gsettings string using the Terminal application:

gsettings set org.gnome.settings-daemon.plugins.media-keys max-screencast-length 60

Replace the ’60’ value with the length you want in seconds, e.g., 300 for 5 minutes, 600 for 10 minutes, and so on. If you set the value to ‘0’ there will be no time limit.

Remember: you can stop recording at any time regardless of the duration you set. Just press the keyboard shortcut you use to start recording to stop recording.

KDE Spectacle

KDE Spectacle supports screen recording for a KDE Plasma Wayland session since the 23.04 release. To launch Spectacle, press PrtSc.

On the middle right side of Spectacle, click the tab 'Recording', select one of three options - Workspace, Selected Screen and Selected Window.

Press 'Finish recording' to stop the recording. Recorded footage will be saved as WebM file format as a default.

Byzanz

Byzanz is a desktop recorder striving for ease of use. It can record to GIF images, Ogg Theora video - optionally with sound – and other formats. It is available in Fedora. To install execute

% sudo dnf install byzanz

It is similar to former Istanbul, but can also produce:

  • animierte GIF-Dateien (nur Video)

  • Ogg Theora-Dateien (mit oder ohne Audio)

  • FLV Flash screen files (lossless, can be postprocessed)

  • Byzanz format for conversion later to multiple formats

Simple Screen Recorder

SimpleScreenRecorder is a Linux program that is created to record programs and games.

Funktionsmerkmale

  • Grafische Benutzeroberfläche (Qt-basiert).

  • Schneller als VLC und ffmpeg/avconv.

  • Records the entire screen or part of it, or records OpenGL applications directly (similar to Fraps on Windows).

  • Synchronizes audio and video properly (a common issue with VLC and ffmpeg/avconv).

  • Reduces the video frame rate if your computer is too slow (rather than using up all your RAM like VLC does).

  • Fully multithreaded: small delays in any of the components will never block the other components, resulting is smoother video and better performance on computers with multiple processors.

  • Pause and resume recording at any time (either by clicking a button or by pressing a hotkey).

  • Shows statistics during recording (file size, bit rate, total recording time, actual frame rate, …​).

  • Can show a preview during recording, so you don’t waste time recording something only to figure out afterwards that some setting was wrong.

  • Uses libav/ffmpeg libraries for encoding, so it supports many different codecs and file formats (adding more is trivial).

  • Can also do live streaming (experimental).

  • Sensible default settings: no need to change anything if you don’t want to.

  • Tooltips for almost everything: no need to read the documentation to find out what something does.

SimpleScreenRecorder is available in the RPM Fusion repository. RPM Fusion can be activated with this command:

rpm -Uvh http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm

Anschließend kann SimpleScreenRecorder mit diesem Befehl installiert werden:

sudo dnf install simplescreenrecorder

OBS Studio

OBS Studio bietet Ihnen professionelle Werkzeuge mit vielen Funktionen für Ihre Videoaufnahmen und Live-Streams. Die aktuelle Version der zugehörigen Dokumentation finden Sie unter https://obsproject.com/kb/quick-start-guide

Web-Anwendungen oder Webseiten für Bildschirmaufzeichnungen

Dies ist ein Sonderfall, und speziell für diese Aufgabe entwickelte Werkzeuge können ein besseres Ergebnis erzielen. Chrome bietet Plugins, die diese Aufgabe erledigen.

Advanced Topics: Adding Audio

  • Sie benötigen Audacity (oder ein anderes Audioaufnahmeprogramm)

  • Nehmen Sie Ihre Audiospur auf und achten Sie dabei darauf, sie mit den Ereignissen in Ihrer Aufnahme zu synchronisieren (ich glaube, es ist einfacher, zuerst die Audiospur aufzunehmen und dann den Ton während der Videoaufnahme abzuspielen)

  • Exportieren Sie Ihre Audiodatei in eine WAV- oder Ogg-Vorbis-Datei. Ich verwende dafür /tmp/stream.wav

  • Grab the script fedora-av-splice.sh. This script uses the gstreamer framework to add the audio and re-encode the theora video file

  • Run fedora-av-splice.sh /tmp/stream.wav /path/to/theora.ogg /path/to/result.ogg

  • Get a cup of coffee while things encode, this will be cpu intensive.

  • You should be able to play the resulting file in mplayer, vlc, totem, or xine

Fortgeschrittene Themen: Alternative Tonspuren

Goal: Create alternative audio tracks for pre-existing screencast named desktop-recording.ogg

Additional Software Needed: libannodex in Fedora

  • Create a 10 second timestamp test pattern video with gstreamer

    gst-launch-0.8 videotestsrc num-buffers=250 ! video/x-raw-yuv,framerate=25.0 ! timeoverlay ! theoraenc ! oggmux ! filesink location=test.ogg

  • chain the two videos together to produce a video with 10 second lead-in

cat test.ogg desktop-recording.ogg > edit-video.ogg

  • Starten Sie die Videowiedergabe mit totem edit-video.ogg

  • begin recording new audio track at the end of the 10 second lead in.

  • make small edits as needed at the beginning and end of the audio to have audio file make time length of the original video

  • use shell script fedora-av-splice.sh as above to replace the original audio track

Fortgeschrittene Themen: Einen Video-Zeitstempel hinzufügen

Für weitere Bearbeitungsaufgaben kann die Zeitangabe über das Originalvideo gelegt werden. Dies kann bei der Erstellung zusätzlicher Tonspuren hilfreich sein.

Referenzen

Want to help? Learn how to contribute to Fedora Docs ›