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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I got a few BR movies for xmas so I thought I’d try
ripping them to see if they would playback properly. Unfortunately the playback
was a bit choppy leading to numerous tests with out any real conclusion as to
what the problem is. So I thought I’d try posting here to see if there
are any useful suggestions.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’m primarily using JYA’s 0.24 fixes repo for HD
audio and also JYA’s modeline for 1920x1080@23.976 although I have tested
some other frame rates as well. In addition to the OSD of the display I have a
frame rate tester which confirms the actual frame is 23.975634 over 1000 frames
using gl sync api calls. With verbose frontend logging on I can see that the
audio is stated to be running slowly and that frames are being dropped to
compensate. With HD audio enabled it reaches a point where after a min or two
of playback the discontinuity between audio and video leads to an almost
complete breakdown in playback where audio and video seem to be continually
trying to get back in sync but never quite succeeding. I’m not sure if
this is with all the rips but I have seen the frame drops on a lot of them and
so concentrated on 1 in particular (VC-1 video, DTS audio, AC3 commentary)
where I know to look out for it at certain points. All the rips were created
with makemkv 1.7 and I have not been able to validate whether or not makemkv is
the source of the issue although I did re-rip my test movie without HD audio to
test if that was the problem essentially leaving the defaults ticked. Unfortunately
DumpHD will not work my drive so I was not able to test that as it would have
been my preferred option. Playback at 59.989 fps seemed a lot better, playback
at 24 fps did not seem to help. Mythfrontend logging and makemkv all state the
video is VC-1 23.976fps.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have JYA’s repo on my backend and frontend, both
have different kernels, different nvidia hardware and drivers and both seem to
suffer with the same playback problems (with/without hd audio and also without
hdmi audio). I also have an original 0.24 fixes frontend with the original ION chipset
(other frontend is an ION2) which has the same issues. I am using storage
groups for the movies but I copied the test movie across to one of the
frontends and tried local playback which did not help. I’m not sure if the
storage groups need to be totally disabled but I did read a post that suggested
there may be some associated playback issues. In addition to adjusting a
variety of nVidia related settings I tried regular ffmpeg playback on the
backend but the results were still the same. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I did try some other stuff too but really wanted to see if
this rings a bell with anyone as my time to test things has sort of run out.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Will<o:p></o:p></span></font></p>
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