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 -- You received this bug notification because you are a member of Desktop 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 -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp