| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
| <!-- |
| PS3 Media Server, for streaming any medias to your PS3. |
| Copyright (C) 2008 A.Brochard |
|
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License |
| as published by the Free Software Foundation; version 2 |
| of the License only. |
|
| 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. See the |
| GNU General Public License for more details. |
|
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| --> |
| <html> |
| <head> |
| <title>Transcoding settings</title> |
| <linkhref="css/style.css" rel="stylesheet" type="text/css" /> |
| </head> |
| <body> |
| <h1>Transcoding settings</h1> |
|
| <p>The "Transcoding settings" tab allows you to specify how content |
| will be transcoded. UMS uses external programs to transcode and stream |
| content to your device. Some of these programs overlap in what kind of |
| media they can transcode. On this tab you can specify which order of |
| preference the programs have when UMS determines how to transcode |
| media. For each media type there is a list of programs, sorted by |
| preference. The topmost program is most likely to be used. If it |
| cannot transcode the media, the next program on the list is used, and |
| so on.</p> |
|
| <p>This tab also allows to set the details of transcoding for each |
| program. Below is a list of the settings on this tab.</p> |
|
| <h2>Common transcode settings</h2> |
|
| <h3>General settings</h3> |
| <dl> |
| <dt>Transcode buffer maximum size</dt> |
| <dd>This value is about how much temporary space should be used |
| for buffering a video before sending it to PS3. Default value is 400.</dd> |
|
| <dt>Number of cores used for transcoding</dt> |
| <dd>This value is bout how many CPU cores should be used for |
| transcoding. The maximum value depends on the physical available |
| count of "real processor cores". That means hyperthreading virtual |
| CPU cores do not count! If you are not sure, analyze your CPU with |
| the free tool CPU-z on Windows systems. On Linux have a look at the virtual |
| proc-filesystem. In the file /proc/cpuinfo you will find more details |
| about your CPU. You also get much information about CPUs from AMD and |
| Intel from their Wikipedia-articles. Regardless, UMS should be able to |
| detect and set the correct amount of cores.</dd> |
|
| <dt>Chapters # Transcode # folder support / interval in minutes</dt> |
| <dd>enable automatically creation of chapters every x minutes in |
| virtual folder</dd> |
| </dl> |
|
| <h3>Audio settings</h3> |
| <dl> |
| <dt>Number of audio channels</dt> |
| <dd>If you have a surround AV-receiver or amplifier connected to |
| your PS3 select 5.1, otherwise 2 channels stereo.</dd> |
|
| <dt>AC3 Audio bitrate (in Kbits/s)</dt> |
| <dd>Here you set the quality of digital audio sound. Your |
| AV-receiver or amplifier has to be capable of playing this quality. |
| Default value is 384.</dd> |
|
| <dt>Keep DTS audio in stream</dt> |
| <dd>This enables playback of DTS digital surround sound via |
| optical digital audio output (toslink) of your PS3. Keep in mind that |
| this increases network traffic. Your AV-receiver or amplifier needs |
| an integrated DTS-decoder for playback.</dd> |
|
| <dt>DTS/FLAC - LPCM-remux</dt> |
| <dd>This enables playback of DTS digital surround sound via HDMI |
| output of your PS3. Keep in mind that this increases network traffic. |
| Your HDMI connected device (TV or AV-receiver or amplifier) needs an |
| integrated DTS-decoder for playback.</dd> |
|
| <dt>Remux when audio track is AC3</dt> |
| <dd>Transcoding of audio will be avoided when it is AC3 (Dolby |
| Digital). The AC3 digital audio track will muxed into a PS3 compatible |
| container if necessary. This should be activated if your PS3 is |
| connected to a TV or AV-receiver or amplifier which has an integrated |
| Dolby Digital Decoder. This feature is not supported when using |
| AviSynth based transcoding engines.</dd> |
| </dl> |
|
| <h3>Video quality settings</h3> |
| <dl> |
| <dt>Maximum bandwidth in Mbits/s</dt> |
| <dd>This is some kind of network throttle. One may think it is a |
| brilliant idea to reduce network bandwidth in order to get HD videos |
| streaming via WLAN. Experience shows that it does not work as |
| expected. You need lots of CPU power for transcoding. If that is not |
| a problem you will get really poor video quality when stream HD |
| videos on low network bandwidth. So better leave the default value 0. |
| You should also note that this setting won't affect muxed videos. You |
| may have to enforce transcoding by choosing another transcoding |
| engine.</dd> |
|
| <dt>Mpeg2 Video quality settings (dropdown)</dt> |
| <dd>If UMS is not able to stream directly or mux the audio/video |
| to a PS3 compatible container it will transcode to MPEG2, which is PS3 |
| compatible. This costs lots of CPU power. This also will increase the |
| network traffic because MPEG2 compression is not very good for HD |
| videos. You will need a 100MBit/s LAN or DLAN for playback of |
| transcoded HD videos - WLAN won't work (maybe some 720p videos will |
| do). You are able to control the quality settings of MPEG2 encoding |
| which corresponds to needed network bandwidth. So there are some |
| parameters available to control MPEG2 quality. Keyint means keyframes, |
| keyint=3 means that every third frame is a keyframe which is a |
| complete picture. In between there are two pictures which only |
| contain differences to the predecessing picture. A high value for |
| keyint will result in a lower network bandwidth but will also cause |
| bad quality in fast action scenes in movies. There are also so called |
| quantizer values (vqmqx, vqmin, vqscale). High values result in low |
| quality. Try out some of the values available in the dropdown.</dd> |
| </dl> |
|
| <h3>Misc options</h3> |
| <dl> |
| <dt>Definitely disable subtitles</dt> |
| <dd>Displaying subtitles will automatically enforce transcoding. |
| If you want to avoid transcoding and definitely do not need subtitles |
| enable this feature.</dd> |
|
| <dt>Skip transcode for following extensions</dt> |
| <dd>Enforce direct playback for certain filetypes.</dd> |
|
|
-