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2022-03-13 11:34:03 -04:00
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README.html
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<p>For NVIDIA graphics with the proprietary drivers, the nvdec plugin (recently renamed nvh264dec) can be used for accelerated video decoding on the NVIDIA GPU with CUDA. The nvdec plugin is part of gstreamer1.0-plugins-bad, but is generally not included in binary packages, as NVIDIA’s proprietary <a href="https://docs.nvidia.com/video-technologies/video-codec-sdk/nvdec-video-decoder-api-prog-guide/">Video Codec SDK</a> must be downloaded, and three header files from it must be added to the gstreamer source before the plugin can be compiled. Users must do this themselves: see <a href="https://gist.github.com/corenel/a615b6f7eb5b5425aa49343a7b409200">these instructions</a>, and adapt them as necessary for your GStreamer installation. This plugin should be used with the <code>-vd nvdec</code> (or nvh264dec) and <code>-vs glimagesink</code> uxplay options.</p>
<ul>
<li><p><strong>GPU Support for Raspberry Pi</strong></p>
<p>Raspberry Pi computers can run UxPlay with software decoding of h264 video (options <code>uxplay -rpi -avdec</code>) but this usually has unacceptible latency, and hardware-accelerated decoding by the Pi’s built-in Broadcom GPU should be used. UxPlay’s antecedent <a href="http://github.com/FD-/RPiPlay">RPiPlay</a> was developed to use the 32-bit-only omx (OpenMAX) driver for this, but omx has recently been declared obsolete and abandoned in “legacy” status by Raspberry Pi OS (Bullseye). The GStreamer plugin for its replacement v4l2 (Video4Linux2) has until recently been unusable with UxPlay, but new fixes in the GStreamer development branch have changed this. Backports (as patches) to GStreamer 1.18.4 (R Pi OS Bullseye), 1.18.5 (Ubuntu 21.10) and 1.20.0 (Manjaro) are now available <a href="https://github.com/FDH2/UxPlay/issues/70">here</a>, until distributions release them as updates, and work well with UxPlay, using a new option <code>uxplay -rpi</code> (tested on R Pi model 4B). When using R Pi OS Lite (no X11), use ’uxplay -rpi -vs kmssink`.</p></li>
<p>Raspberry Pi computers can run UxPlay with software decoding of h264 video (options <code>uxplay -rpi -avdec</code>) but this usually has unacceptible latency, and hardware-accelerated decoding by the Pi’s built-in Broadcom GPU should be used. UxPlay’s antecedent <a href="http://github.com/FD-/RPiPlay">RPiPlay</a> was developed to use the 32-bit-only omx (OpenMAX) driver for this, but omx has recently been declared obsolete and abandoned in “legacy” status by Raspberry Pi OS (Bullseye). The GStreamer plugin for its replacement v4l2 (Video4Linux2) has until recently been unusable with UxPlay, but new fixes in the GStreamer development branch have changed this. Backports (as patches) to GStreamer 1.18.4 (R Pi OS Bullseye), 1.18.5 (Ubuntu 21.10) and 1.20.0 (Manjaro) are now available <a href="https://github.com/FDH2/UxPlay/issues/70">here</a>, until distributions release them as updates, and work well with UxPlay, using a new option <code>uxplay -rpi</code> (tested on R Pi model 4B). When using R Pi OS Lite (no X11), use <code>uxplay -rpi -vs kmssink</code>.</p></li>
</ul>
<h3 id="note-to-packagers-openssl-3.0.0-solves-gpl-v3-license-issues.">Note to packagers: OpenSSL-3.0.0 solves GPL v3 license issues.</h3>
<p>Some Linux distributions such as Debian do not allow distribution of compiled GPL code linked to OpenSSL-1.1.1 because its “dual OpenSSL/SSLeay” license has some incompatibilities with GPL, unless all code authors have explicitly given an “exception” to allow such linking (the historical origins of UxPlay make this impossible to obtain). Other distributions treat OpenSSL as a “System Library” which the GPL allows linking to.</p>

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README.md
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@@ -87,7 +87,7 @@ This plugin should be used with the `-vd nvdec` (or nvh264dec) and `-vs glimages
replacement v4l2 (Video4Linux2) has until recently been unusable with UxPlay, but new fixes in the GStreamer development branch have
changed this. Backports (as patches) to GStreamer 1.18.4 (R Pi OS Bullseye), 1.18.5 (Ubuntu 21.10) and 1.20.0 (Manjaro) are now
available [here](https://github.com/FDH2/UxPlay/issues/70), until distributions release them as updates, and work well with UxPlay,
using a new option `uxplay -rpi` (tested on R Pi model 4B). When using R Pi OS Lite (no X11), use 'uxplay -rpi -vs kmssink`.
using a new option `uxplay -rpi` (tested on R Pi model 4B). When using R Pi OS Lite (no X11), use `uxplay -rpi -vs kmssink`.
### Note to packagers: OpenSSL-3.0.0 solves GPL v3 license issues.

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README.txt
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@@ -119,7 +119,7 @@ uxplay options.
[here](https://github.com/FDH2/UxPlay/issues/70), until
distributions release them as updates, and work well with UxPlay,
using a new option `uxplay -rpi` (tested on R Pi model 4B). When
using R Pi OS Lite (no X11), use 'uxplay -rpi -vs kmssink\`.
using R Pi OS Lite (no X11), use `uxplay -rpi -vs kmssink`.
### Note to packagers: OpenSSL-3.0.0 solves GPL v3 license issues.