Public bug reported:
For videos encoded with VP9 .webm, it takes Totem a long time to resume
playback if you skip ahead to later portions of the video.
When the very same videos are opened in the browser (Using either
firefox or chromium), skipping ahead resumes playback quickly.
Testing:
To test this, try converting a long video to vp9 webm. For example, you
can convert an avi to webm using ffmpeg like this:
#Set threads to the number of real cores minus 1 (I just set it to 3 below) :
ffmpeg -i input.avi -c:v libvpx-vp9 -threads 3 -lossless 1 output.webm
#You can also convert a whole folder of avi to webm like this:
for file in *.avi; do ffmpeg -i "$file" -c:v libvpx-vp9 -threads 3 -lossless 1
"${file%avi}webm"; done
After this, try playing those videos in Totem and skip around the video
to see poor resume performance.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: libgstreamer1.0-0 1.8.3-1~ubuntu0.1
ProcVersionSignature: Ubuntu 4.13.0-41.46~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-41-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.17
Architecture: amd64
CurrentDesktop: Unity
Date: Sat May 12 13:52:36 2018
InstallationDate: Installed on 2018-05-12 (0 days ago)
InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228)
SourcePackage: gstreamer1.0
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gstreamer1.0 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to gstreamer1.0 in Ubuntu.
https://bugs.launchpad.net/bugs/1770889
Title:
Bad webm vp9 Performance as You Skip Ahead
Status in gstreamer1.0 package in Ubuntu:
New
Bug description:
For videos encoded with VP9 .webm, it takes Totem a long time to
resume playback if you skip ahead to later portions of the video.
When the very same videos are opened in the browser (Using either
firefox or chromium), skipping ahead resumes playback quickly.
Testing:
To test this, try converting a long video to vp9 webm. For example,
you can convert an avi to webm using ffmpeg like this:
#Set threads to the number of real cores minus 1 (I just set it to 3 below) :
ffmpeg -i input.avi -c:v libvpx-vp9 -threads 3 -lossless 1 output.webm
#You can also convert a whole folder of avi to webm like this:
for file in *.avi; do ffmpeg -i "$file" -c:v libvpx-vp9 -threads 3 -lossless
1 "${file%avi}webm"; done
After this, try playing those videos in Totem and skip around the
video to see poor resume performance.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: libgstreamer1.0-0 1.8.3-1~ubuntu0.1
ProcVersionSignature: Ubuntu 4.13.0-41.46~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-41-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.17
Architecture: amd64
CurrentDesktop: Unity
Date: Sat May 12 13:52:36 2018
InstallationDate: Installed on 2018-05-12 (0 days ago)
InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64
(20180228)
SourcePackage: gstreamer1.0
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/1770889/+subscriptions
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