This bug was fixed in the package mpv - 0.27.0-2ubuntu4
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mpv (0.27.0-2ubuntu4) bionic; urgency=medium
* Only try hwdec=vaapi, or nothing at all. This avoids problems with other
acceleration methods such as Nvidia CUDA (LP: #1737670, LP: #1728514)
-- Daniel van Vugt
** Changed in: mpv (Ubuntu)
Assignee: (unassigned) => Daniel van Vugt (vanvugt)
** Changed in: mpv (Ubuntu)
Importance: Undecided => Medium
** Changed in: mpv (Ubuntu)
Status: Incomplete => In Progress
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** Changed in: mpv (Ubuntu)
Assignee: Daniel van Vugt (vanvugt) => (unassigned)
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https://bugs.launchpad.net/bugs/1728514
Title:
[nvidia] mpv won't play videos because no
I ran ldd on all *.so files under /usr/ and couldn't spot anything
suspicious.
I tried again the various voodoo procedures I initially attempted after
deleting the old opencv libraries, and it turns out that deleting
~/.cache/gstreamer-1.0/ was the correct solution to whatever problem I
was
Hi,
Daniel, sorry about some of the stuff I wrote to you above which I now
realise was a bit patronising.
Noam, unlike mpv, totem uses gstreamer plugins (as Daniel says) so running ldd
on totem itself won't give any useful information. However if you run ldd on
all the plugins like this, it
Is there a log that would help for the Totem issue? Should I open a new
bug for it?
VLC seems to be able to play h264 but not mp4.
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https://bugs.launchpad.net/bugs/1728514
Title:
I removed all opencv libraries from /usr/local/lib. Now mpv works.
Totem still doesn't.
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https://bugs.launchpad.net/bugs/1728514
Title:
[nvidia] mpv won't play videos because no
I was imagining there is a dlopen() somewhere but can't find any project
opening libcudart directly. The errors could actually occur at any point
during program execution as a result of logging dlerror() after a
dlopen() has failed. That's how typical plugin systems work.
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Daniel, if the dynamic linker itself complains about missing shared
libraries, it is unlikely changing the mpv config file will help because
the mpv config file is read after ld.so loads all the libraries. The
Totem issue is the same bug as can be seen from the JournalErrors.txt
file.
Noam,
ldd /usr/bin/mpv output, run from /usr/lib/x86_64-linux-gnu attached.
Sorry if this doesn't make sense, this is a bit voodoo for me.
** Attachment added: "ldd_mpv_from_usr_lib"
https://bugs.launchpad.net/ubuntu/+source/mpv/+bug/1728514/+attachment/420/+files/ldd_mpv_from_usr_lib
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You
Okay, the most important finding so far is that if I cd to
/usr/lib/x86_64-linux-gnu, mpv --help works. Not only that, it actually
correctly plays videos, with mpv.conf being any of auto, vaapi, no.
/usr/lib/x86_64-linux-gnu has libcudart.so.8.0.61.
I guess it's some dynamic linking issue?
As to
Let's try to keep the two issues separate.
(1) This bug is about mpv and maybe specifically mpv on NVIDIA. Another
workaround that might work there is:
mkdir ~/.config/mpv
echo hwdec=no > ~/.config/mpv/mpv.conf
(2) The totem issue probably isn't a bug. We just don't install any
plugins
Please also let me know if "hwdec=vaapi" works for you. In theory it
should just fall back to software rendering for NVIDIA systems.
"hwdec=vaapi" is the default setting I think we should use in future...
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(1) You can also apply the same workaround by editing (as root):
/etc/mpv/mpv.conf
** Changed in: mpv (Ubuntu)
Assignee: (unassigned) => Daniel van Vugt (vanvugt)
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** Summary changed:
- mpv won't play videos because no libcudart.so.7.5, totem won't play mp4 and
h264
+ [nvidia] mpv won't play videos because no libcudart.so.7.5
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