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Hi Ashu!<br>
<br>
<br>
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<blockquote type="cite"
cite="mid:mailman.74.1524193746.1338.mythtv-users@mythtv.org">
<blockquote type="cite">
<pre wrap="">I set the playback same as I had on my 0.27 - VDPAU slim. However, no luck.
I changed it to Auto - and still no luck.
Another issue (non-issue at this stage - will bring it up as i progress
here) is the audio. When I do test - the center channel plays on my
surround rear speaker. But I digress. The choppy video is what makes this a
show stopper here for now.
</pre>
</blockquote>
</blockquote>
<br>
A quick guide based on some of my old notes:<br>
<br>
<blockquote>
<p>For <i>Current Video Playback Profile</i> options (Playback
Profiles 3/8):</p>
<p> See <font face="Norasi"><i>MythTV – Video Playback
APIs.odt</i></font><font face="Norasi"> </font><font
face="Norasi">for
details.</font></p>
<p style="margin-left: 0.49in"> <font face="Norasi">V</font><font
face="Norasi">DPAU: </font><font face="Norasi">nVidia</font></p>
<p style="margin-left: 0.49in"> <font face="Norasi">CrystalHD:
Broadcom</font></p>
<p style="margin-left: 0.49in"> <font face="Norasi">VAAPI: AMD
and Intel</font></p>
<p style="margin-left: 0.49in"> <font face="Norasi">DxVA2:
Windows</font></p>
<p style="margin-left: 0.49in"> <font face="Norasi">VDA: OSX</font></p>
</blockquote>
Sort of translates as "for an nVidia video care I want to select a
VDPAU option", etc. The "See Mythtv...odt" is here:<br>
<br>
<blockquote><br>
<p style="margin-bottom: 0in; line-height: 100%"><font size="-2"><a
href="https://www.mythtv.org/wiki/Choosing_Frontend_Hardware"><font
face="DejaVu Sans, sans-serif"><font style="font-size:
11pt">https://www.mythtv.org/wiki/Choosing_Frontend_Hardware</font></font></a></font></p>
<p style="margin-bottom: 0in; line-height: 100%"><br>
</p>
<p style="margin-bottom: 0in; line-height: 100%"><font
face="Courier 10 Pitch">lspci
| grep -i vga</font> Other options at Hardware Determination
Discovery.odt</p>
<h2 class="western"><a name="Hardware_Playback"></a>Hardware
Playback</h2>
<p>MythTV currently supports two hardware playback APIs that offer
the ability to offload decoding from the CPU to another device.
While
these devices can be used to breathe life into an otherwise
underpowered system, hardware decoders will never be as robust
or
flexible as software decoders, and <b>it is recommended one
chose a
system with enough CPU power that it can be fallen back on if
needed</b>.
</p>
<h3 class="western"><a name="VDPAU"></a><a
href="https://www.mythtv.org/wiki/VDPAU">VDPAU</a></h3>
<p>This API is available on any nVidia card, 8 series or newer. It
supports full offloading of MPEG-2, H.264, and VC1. The
availability
of this allows older and slower systems, notably the ION
platform, to
remain useful with video content that far exceeds the capability
of
the processor. </p>
<h3 class="western"><a name="Crystal_HD"></a><a
href="https://www.mythtv.org/wiki/Broadcom_Crystal_HD">Crystal
HD</a></h3>
<p>This API is used on a series of Broadcom MiniPCIe and
ExpressCard
adapters for use in laptops and small form factor systems. These
devices offer similar capabilities to VDPAU, but exist for
decoding
only. A separate video card will need to be used for output. </p>
<h3 class="western"><a name="VAAPI"></a><a
href="https://www.mythtv.org/wiki/VAAPI">VAAPI</a></h3>
<p>This decode API is currently in use by AMD and Intel for use on
their graphics hardware. Support for this was recently added to
the
development branch, to be available with the upcoming release of
0.25. Decoding capability using this should be comparable to
VDPAU,
however the nVidia solution is still preferred due to its
maturity,
as well as the post processing features it offers. </p>
<h3 class="western"><a name="DxVA_2"></a><a
href="https://www.mythtv.org/wiki/DXVA2">DxVA
2</a></h3>
<p>This decode API is used on Windows. Support for this was
recently
added to the development branch, to be available with the
upcoming
release of 0.25. </p>
<h3 class="western"><a name="VDA"></a><a
href="https://www.mythtv.org/wiki/VDA">VDA</a></h3>
<p>This decode API is used on OSX. Support for this was recently
added to the development branch, to be available with the
upcoming
release of 0.25. </p>
</blockquote>
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(Wonder how old that note is: "upcoming 0.25"!!) Basically boils
down to trying to use the wrong option won't do anything because the
driver and the hardware don't know how to interact with each other.
Sort of like giving a Linux command to a Windows computer: result is
essentially "huh?" and nothing is done.<br>
<br>
Hope that helps - sounds like you're making progress! Still think
you'd be helped by Curtis Gedak's guide I suggested some time back.
<br>
<br>
Barry<br>
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