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some clean-up of the video-operations doc

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Robin Gareus 2013-06-08 04:54:43 +02:00
parent 9c216e1feb
commit 05ca69f672
1 changed files with 35 additions and 32 deletions
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_manual/23_video-timeline/03_operations.html
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@ -3,22 +3,17 @@ layout: default
title: Workflow & Operations
---
<ul>
<li>Session &gt; Open Video - add/replace a video to/on the timeline
</li>
<li>Window &gt; View Monitor open/close external video monitor window
</li>
<li>View &gt; Video Monitor &gt; … settings of the video monitor
</li>
<li>Session &gt; Export &gt; Video
</li>
</ul>
<ul>
<li>Drag the video in the timeline - right click and choose &#039;lock&#039; to prevent accidental drags
</li>
<li>Audio-Region &gt; context-menu &gt; Position &gt; Lock to video – audio-region(s) are moved along with the video.
</li>
</ul>
<h2>Overview of Operations</h2>
<dl class="narrower-table">
<dt>Session &gt; Open Video</dt><dd>Add/replace a video to/on the timeline</dd>
<dt>Window &gt; View Monitor</dt><dd>Open/close external video monitor window</dd>
<dt>View &gt; Video Monitor &gt; …</dt><dd>Various settings of the video monitor</dd>
<dt>Session &gt; Export &gt; Video</dt><dd>Export session and multiplex with video-file</dd>
<dt>Drag the video in the timeline</dt><dd>Re-align video and move 'locked' audio-regions along</dd>
<dt>Context-menu on the video-timeline: &#039;lock&#039;</dt><dd>prevent accidental drags</dd>
<dt>Audio-Region &gt; context-menu &gt; Position &gt; Lock to video</dt><dd>mark audio-region(s) to be moved along with the video.</dd>
</dl>
<h2>Adding Video</h2>
@ -38,28 +33,24 @@ Adding video is a two-step process.
</p>
<p>
<img src="/files/a3/a3_video_open.png" class="medialeft" alt="video-open-dialog" width="300" />
</p>
<p>
The first step is rather straight forward: The panel on the right side allows to seek through the video and displays basic file information. It is also useful to check if the video format/codec is supported:
</p>
<p>
<br/>
<img src="/files/a3/a3_video_open.png" alt="video-open-dialog" width="300" />
</p>
<p>
<img src="/files/a3/a3_video_import.png" alt="Video Import Dialog" width="300" />
<br/>
</p>
<p>
The second step analyzes the video file in more detail and offers import options:
</p>
<ul>
<li><strong>Import/Transcode to Session</strong>. This is the default. The video will be imported in a suitable video-format/codec for the timeline and video monitor and saved inside the session folder. A location different than the session folder can also be chosen (extrnal disk, network storage of the video server on a different machine…).
<li><strong>Import/Transcode to Session</strong>. This is the default. The video will be imported in a suitable video-format/codec for the timeline and video monitor and saved inside the session folder. A location other than the session folder can also be chosen (external disk, network storage of the video server on a different machine…).
</li>
<li><strong>Reference from Current Location</strong>. Only useful for opening files that were previously encoded (are already in a good format/codec) use with care.
</li>
@ -68,26 +59,33 @@ The second step analyzes the video file in more detail and offers import options
</ul>
<p>
By default the video is imported using the original width/height. If it is a large video (e.g. full-HD) it will make sense to scale it down to lighten CPU and disk I/O required to play it. For editing sound-tracks, a small representation is usually sufficient. The default bitrate is set to use 0.7 bits per pixel. Some key values: the average DVD medium uses 5000kbit/sec.
<img src="/files/a3/a3_video_import.png" alt="Video Import Dialog" width="300" />
</p>
<p>
<br/>
</p>
<p>
By default the video is imported using the original width/height.
If it is a large video (e.g. full-HD) it makes sense to scale it down to decrease the CPU load and disk I/O which required to decode and play the file.
A small, low-quality representation of the image is usually sufficient for editing sound-tracks.
The default bitrate in kbit/sec is set to use 0.7 bits per pixel. (compare: the average DVD medium uses 5000kbit/sec; at PAL resolution this is about 0.5 bits per pixel - but the DVD is using the <em>mpeg2</em> - a denser compression algorithm than the <em>mjpeg</em> codec used by ardour.)
</p>
<h2>Working with A/V</h2>
<p>
<img src="/files/a3/a3_videotimeline.png" alt="Video Timeline" width="600" />
Well now,..
</p>
<p>
Well now,..
<img src="/files/a3/a3_videotimeline.png" alt="Video Timeline" width="600" />
</p>
<h2>Exporting Video</h2>
<p>
<img src="/files/a3/a3_video_export.png" alt="Video Export Dialog" width="300" />
</p>
<p>
The video-export will take audio from the current Ardour session and multiplex it with a video-file.
</p>
@ -97,7 +95,7 @@ By default the video file that is displayed on the timeline is used as video-sou
</p>
<p>
The soundtrack of the video is taken from an audio-export of ardour&#039;s master bus.
The soundtrack of the video is taken from an audio-export of Ardour's master bus.
</p>
<p>
@ -105,5 +103,10 @@ The range selection allows to cut or extend the video. If the session is longer
</p>
<p>
Audio Samplerate and Normalize Audio are options for Ardour&#039;s audio exporter. The remaining settings are options that are directly passed on to ffmpeg.
Audio-samplerate and normalize-audio are options for Ardour's audio exporter. The remaining settings are options that are directly passed on to ffmpeg.
</p>
<p>
<img src="/files/a3/a3_video_export.png" alt="Video Export Dialog" width="300" />
</p>