<h2>Adding Video</h2>
<p>
- Adding video is a two-step process: select a video file, and choose
+ Adding video is a two-step process: select a video file, and choose
import mode and optionally select an audio track to extract.
</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.
+ 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>
<img src="/images/a3_video_open.png" alt="video-open-dialog" width="300" />
chosen (external disk, or network storage of the video server on a different
machine).</dd>
<dt><kbd class="menu">Reference from Current Location</kbd></dt>
- <dd>Only useful for opening files that were previously encoded (are already
+ <dd>Only useful for opening files that were previously encoded (are already
in a good format/codec). Use with care.</dd>
<dt><kbd class="menu">Do not Import Video</kbd></dt>
<dd>Useful for extracting audio only.</dd>
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 required to decode and play the
file.<br>
- A small, low-quality representation of the image is usually sufficient
- for editing soundtracks. The default bitrate in kbit/sec is set to use
- 0.7 bits per pixel. (Compare: the average DVD medium uses 5000 kbit/s;
- at PAL resolution this is about 0.5 bits per pixel. But the DVD is
- using the <dfn>mpeg2</dfn>—a denser compression algorithm than the
+ A small, low-quality representation of the image is usually sufficient
+ for editing soundtracks. The default bitrate in kbit/sec is set to use
+ 0.7 bits per pixel. (Compare: the average DVD medium uses 5000 kbit/s;
+ at PAL resolution this is about 0.5 bits per pixel. But the DVD is
+ using the <dfn>mpeg2</dfn>—a denser compression algorithm than the
<dfn>mjpeg</dfn> codec used by Ardour.)
</p>
<h2 id="export">Exporting Video</h2>
<p>
- The video export will take audio from the current Ardour session and
- multiplex it with a video file. The soundtrack of the video is taken from
+ The video export will take audio from the current Ardour session and
+ multiplex it with a video file. The soundtrack of the video is taken from
an audio export of Ardour's master bus.
</p>
<p>
- An arbitrary video file can be chosen. For high quality exports, the
- original file (before it was imported into the timeline) should be used.
- This is the default behaviour if that file can be found. If not, Ardour
- will fall back to the imported proxy-video which is currently in use
+ An arbitrary video file can be chosen. For high quality exports, the
+ original file (before it was imported into the timeline) should be used.
+ This is the default behaviour if that file can be found. If not, Ardour
+ will fall back to the imported proxy-video which is currently in use
on the timeline. Any existing audio tracks on this video file are stripped.
</p>
<p>
- The range selection allows to cut or extend the video. If the session is
- longer than the video duration, black frames are prefixed or appended to
- the video. (Note: this process may fail with non-standard pixel aspect
+ The range selection allows to cut or extend the video. If the session is
+ longer than the video duration, black frames are prefixed or appended to
+ the video. (Note: this process may fail with non-standard pixel aspect
ratios). If Ardour's session range is shorter, the video will be cut accordingly.
</p>
<p>
- Audio samplerate and normalization are options for Ardour's audio exporter.
+ Audio samplerate and normalization are options for Ardour's audio exporter.
The remaining settings are options that are directly passed on to ffmpeg.
</p>
<p>
The file format is determined by the extension that you choose for it
(.avi, .mov, .flv, .ogv, .webm,…)
- Note: not all combinations of format, codec, and settings produce files
- which are according to specifications. For example, flv files require
- sample rates of 22.1 kHz or 44.1 kHz, mpeg containers can not
- be used with ac3 audio-codec, etc. If in doubt, use one of the built-in
+ Note: not all combinations of format, codec, and settings produce files
+ which are according to specifications. For example, flv files require
+ sample rates of 22.1 kHz or 44.1 kHz, mpeg containers can not
+ be used with ac3 audio-codec, etc. If in doubt, use one of the built-in
presets.
</p>
<img src="/images/a3_video_export.png" alt="Video Export Dialog" width="300" />
<p>
- Ardour video export is not recommended for mastering! While ffmpeg
- (which is used by Ardour) can produce high-quality files, this export
- lacks the possibility to tweak many settings. We recommend to use winff,
+ Ardour video export is not recommended for mastering! While ffmpeg
+ (which is used by Ardour) can produce high-quality files, this export
+ lacks the possibility to tweak many settings. We recommend to use winff,
devede or dvdauthor to mux & master. Nevertheless this video-export c
omes in handy to do quick snapshots, intermediates, dailies or online videos.
</p>
projects / ardour-manual / blobdiff