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node_modules/
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bower_components/
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*.m4v
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*.wav
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196
16.html
196
16.html
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@ -71,12 +71,27 @@
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</section>
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<section>
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<p><a href="https://imagemagick.org/index.php">ImageMagick</a>
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<p><a href="https://imagemagick.org/index.php" target="_blank">ImageMagick</a>
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<pre><code> sudo apt install imagemagick</code></pre>
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<ul>
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<li>convert / mogrify
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</ul>
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<pre><code class="bash"> sudo apt install imagemagick
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<pre><code class="bash">convert bild.jpg out.gif </code></pre>
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<ul>
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<li>montage</li>
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</ul>
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<pre><code>montage *.jpg out.jpg</code></pre>
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<ul>
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<li>import</li>
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</ul>
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<pre><code>import screen.jpg</code></pre>
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</section>
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<section>
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<pre><code class="bash" contenteditable>
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# komprimiert ein jpg ohne sichtbare Qualitätsverluste
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# ( zb für Webseiten Deployment )
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convert -strip -interlace Plane -sampling-factor 4:2:0 \
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@ -89,22 +104,7 @@ find . -name "*.jpg" -exec mogrify -strip -interlace Plane \
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# Bild beschneiden und zentrieren
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convert input.jpg -crop '1900x1400+0+0'\
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-gravity Center output.jpg
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</code></pre></li>
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</section>
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<section>
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<pre><code class="bash">convert bild.jpg -background black -vignette 5x65000 out.gif
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</code></pre>
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<ul>
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<li>montage</li>
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</ul>
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<pre><code>montage *.jpg out.jpg</code></pre>
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<ul>
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<li>import</li>
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</ul>
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<pre><code>import screen.jpg</code></pre>
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</code></pre>
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</section>
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<section>
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@ -141,6 +141,9 @@ convert rose.png -decipher smiley.gif rose.jpg</code></pre>
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<li>Die Metadaten sollen entfernt werden.</li>
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<li>Veröffentlicht die Bilder in einer Gallerie auf eurer Wordpress Seite.</li>
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</ul>
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Hinweis:
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<pre><code>convert input.jpg -resize '1200x800' output.jpg</code></pre>
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</section>
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<section>
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@ -153,17 +156,67 @@ convert rose.png -decipher smiley.gif rose.jpg</code></pre>
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<section>
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<h4>Einfacher Videoschnitt</h4>
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<ul>
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<li class="fragment">OpenShot</li>
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<li class="fragment">OpenShot
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<div><img src="img/openshot-screen.jpg"></div></li>
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<li class="fragment">Pitivi</li>
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<li class="fragment">KDEnlive</li>
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</ul>
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</section>
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<section>
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<h4 class="fragment">Anspruchsvoller Videoschnitt</h4>
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<ul>
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<li class="fragment">Blender - eigentl. 3D-Rendering <br><a href="https://peach.blender.org/download/">Big Buck Bunny</a></li>
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<li class="fragment">Blender - eigentl. 3D-Rendering <ul><li><a href="https://www.youtube.com/watch?v=YE7VzlLtp-4">Big Buck Bunny bei YouTube</a></li>
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<li><a href="https://www.blenderguru.com/articles/27-inspiring-blender-animations-that-will-make-your-jaw-drop">Blender Videos</a></li></ul>
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<li class="fragment">Lightworks</li>
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</ul>
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</section>
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<section>
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<h3>Ausflug</h3>
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Video Container
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</section>
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<section>
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Ein Video Container beinhält
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<ul>
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<li class="fragment ">Eine Videospur</li>
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<li class="fragment ">eine oder mehrere Audiospuren</li>
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<li class="fragment ">Untertitel</li>
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</ul>
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</section>
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<section>
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Die Videospur ist meist kodiert mit
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<ul>
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<li class="fragment ">mpeg-1</li>
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<li class="fragment ">mpeg-4</li>
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<li class="fragment ">mpeg4-part10: h264 / h265</li>
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<li class="fragment ">vp8 / vp9 </li>
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<li class="fragment ">theora</li>
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</ul>
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</section>
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<section>
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Die Audiospur ist meist kodiert mit
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<p>
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<ul>
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<li class="fragment ">mp3</li>
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<li class="fragment ">aac</li>
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<li class="fragment ">ogg vorbis</li>
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<li class="fragment ">opus</li>
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</ul>
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</section>
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<section>
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Zusammengesetzt ergeben sich Container
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<ul>
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<li class="fragment ">mp4 : h264 + mp3 ( <a href="https://de.wikipedia.org/wiki/MP4">Wikipedia</a> )</li>
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<li class="fragment ">webm : vp9 + opus ( <a href="https://de.wikipedia.org/wiki/WebM">Wikipedia</a> )</li>
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<li class="fragment ">ogv : theora + ogg ( <a href="https://de.wikipedia.org/wiki/Ogg">Wikipedia</a> )</li>
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<li class="fragment ">mehr <a href="https://de.wikipedia.org/wiki/Containerformat">Wikipedia</a></li>
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</ul>
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</section>
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<section>
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<h4>ffmpeg</h4>
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<h5>Das Schweizer Taschenmesser der Audio / Video Konvertierung</h5>
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@ -177,10 +230,31 @@ ffmpeg -i snatch_1.vob -f avi -c:v mpeg4 -b:v 800k \
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# h264 kodiertes mp4 zur Darstellung im Browser
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ffmpeg -i infile.avi -vf scale=1200:800 -b:v 600k \
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-b:a 128k -c:v libx264 -preset medium
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-b:a 128k -c:v libx264 -preset medium outfile.mp4
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# mp3 aus wav
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ffmpeg -i infile.wav -b:a 192k outfile.mp3
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</code></pre>
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</section>
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<section>
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<pre><code class="bash" contenteditable>
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# produziert 3 Videos; benötigt für Webseiten
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# damit alle Browser d. Video abspielen
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# video: h264; audio: aac ( default )
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ffmpeg -i infile -b:v 600k -b:a 128k -c:v libx264 out.mp4
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# video: vp9; audio: opus ( default )
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ffmpeg -i infile -b:v 600k -b:a 128k out.webm
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# video: theora; audio: ogg vorbis
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ffmpeg -i infile -codec:v libtheora -qscale:v 7 \
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-codec:a libvorbis -qscale:a 5 out.ogv
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</code></pre>
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</section>
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<section>
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<ul>
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<li>Handbrake</li>
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</ul>
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</section>
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<section data-transition="slide" data-background="img/trianglify.svg" data-background-transition="convex"> <h3 style="color: lightgrey; text-shadow: 1px 1px black">Audio Production</h3></section>
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<section>
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<span style="color: orange">Aufgabe:</span>
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<ul>
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<li class="fragment ">ardour</li>
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<li class="fragment ">calf</li>
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<li class="fragment ">guitarix</li>
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<li class="fragment ">jack</li>
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<li>installiert ffmpeg</li>
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<li>erstellt aus <a href="/beispiele/16/infile.m4v">DIESEM</a> Video einen 10sec langen mp4 Video-Snippet.</li>
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<li>erstellt aus <a href="/beispiele/16/wav-file.zip">DIESEM</a> Wav ein MP3 mit 192kB Bitrate.</li>
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<li>erstellt aus der Wav-Datei eine flac Datei.</li>
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<li>vergleicht die Grössen.</li>
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<li>Warum ist es nicht sinnvoll aus einem mp3 ein wav zu machen?</li>
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</ul>
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Hinweis:
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<pre><code class="bash" contenteditable># 10sec langes video:
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ffmpeg -t 10 -i ..... </code></pre>
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</section>
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<section data-transition="slide" data-background="img/Jaromir-Chalabala1.jpg" data-background-transition="convex"> <h3 style="color: lightgrey; text-shadow: 1px 1px black">Audio Production</h3></section>
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<section>
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Audio unter Linux ist .... interessant.
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<p>Meist Kombination aus Pulseaudio / ALSA
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<p>PulseAudio -> Middleware
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<p>ALSA -> Treiber
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<p>Für Echtzeit-Audio-Verarbeitung ( möglichst geringe Latenzen ) muss die Kombination Jack / ALsa konfiguriert werden
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<aside class="notes">alsamixer</aside>
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</section>
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<section>Audacity
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<div><img src="img/audacity.png"></div></section>
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<section>
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Ubuntustudio
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</section>
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Ardour - Professionelles Recording
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<div><img src="img/ardour.jpg"></div>
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</section>
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<section>
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Guitarix - Virtueller Gitarrenamp
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<div><img src="img/guitarix.jpg"></div>
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</section>
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<section>
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<p><a href="http://kxstudio.linuxaudio.org/index.php">Plugins und andere Tools</a>
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</section>
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<section>
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Jack
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<div><img src="img/QjackctlConnectionsForm.png"></div>
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</section>
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<section>
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<h4>Abspielprgramme</h4>
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<li class="fragment">VLC</li>
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<li class="fragment">Mplayer</li>
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<li class="fragment">Rhythmbox</li>
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<li class="fragment"></li>
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<li class="fragment">VLC</li>
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<li class="fragment">mocp</li>
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</ul>
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</section>
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<section>
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<h4>Multimedia Distributionen</h4>
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<ul>
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<li><a href="http://www.bandshed.net/avlinux/">avlinux</a></li>
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<li><a href="http://ubuntustudio.org">UbuntuStudio</a></li>
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</ul>
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</section>
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<section>
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<h4>Gaming</h4>
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<ul>
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<li class="fragment ">Steam</li>
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<li class="fragment ">GOG</li>
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<li class="fragment ">viele Open Source Spiele
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<ul>
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<li>Sauerbraten</li>
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<li>Assault Cube</li>
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<li>Zero-K</li>
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<li>0 A.D.</li>
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<li>Flightgear</li>
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</ul>
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</li>
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</ul>
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</section>
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</div>
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</div>
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#!/bin/bash
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ffmpeg -t 5 -i infile out-def.mp4
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ffmpeg -t 5 -i infile out-def.webm
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ffmpeg -t 5 -i infile out-def.ogv
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#!/bin/bash
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# 5 sec langes Video
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ffmpeg -t 5 -i infile -b:v 600k -b:a 128k -c:v libx264 out.mp4
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ffmpeg -t 5 -i infile -b:v 600k -b:a 128k out.webm
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ffmpeg -t 5 -i infile -codec:v libtheora -qscale:v 5 -codec:a libvorbis -qscale:a 5 out.ogv
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#!/usr/bin/env ruby
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def convert(file,filebase)
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#`ffmpeg -i '#{file}' -ab 192k '#{filebase}'.mp3`
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`lame -q 0 -b 192 '#{file}' '#{filebase}'.mp3`
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end
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dir = Dir.new(".")
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while file = dir.read do
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reg = /(m4a|ogg|wav)/i
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puts reg
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if file.match(reg)
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filebase = File.basename(file, "." + file.match(reg).to_s)
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convert(file, filebase)
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else
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puts "Keine passende Datei gefunden: m4a, ogg, wav. "
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end
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end
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@ -219,6 +219,9 @@
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<div class="content">
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<ul>
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<li><a href="https://imagemagick.org/index.php" target="_blank">ImageMagick</a></li>
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<li><a href="http://ubuntustudio.org" target="_blank">UbuntuStudio</a></li>
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<li><a href="https://deb-multimedia.org" target="_blank">https://deb-multimedia.org</a></li>
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<li><a href="http://kxstudio.linuxaudio.org/index.php" target="_blank">KX Studio</a></li>
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</ul>
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</div>
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</div>
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