Using 15.04.1 for the first time, I could add video clips and play them in the clip monitor just fine and also add them to the timeline. Placing the marker in the timeline however takes about 15 seconds at all 4 cores 100% until the marker is set and the monitor is updated. This basically renders kdenlive unusable. This was not an issue in the previous 15.04.0. Reproducible: Always Steps to Reproduce: 1. Start kdenlive, add a clip, add it to the timeline 2. Click in the timeline to place the marker somewhere Actual Results: Max. CPU load for 15 seconds until marker position and monitor updated Expected Results: It should be possible to fluently set and move the marker over the timeline
From https://forum.kde.org/viewtopic.php?f=265&t=125359&p=337364#p337364 Could you give more details about scrubbing problems : distro version, FFmpeg version, MLT version, video driver version ? does it fail with any source codec or is it improved by transcoding the source (just for a test case, I know it is a too long process for general use) Distro: kubuntu 15.04 (Vivid Vervet), KDE-Plasma-Version 5.3.1, Qt-Version 5.4.1 FFmpeg version: Libav 6:11.2-1 (universe) MLT version: 0.9.4-0ubuntu1~ubuntu15.04~ppa3 (universe) Video driver version: Kernel driver in use: i915 OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile OpenGL version string: 3.3 (Core Profile) Mesa 10.5.2 OpenGL shading language version string: 3.30 Driver: Intel GPU class: SandyBridge OpenGL version: 3.3 GLSL version: 3.30 Mesa version: 10.5.2 X server version: 1.17.1 Linux kernel version: 3.19 Requires strict binding: yes GLSL shaders: yes Texture NPOT support: yes Virtual Machine: no Direct rendering: true The problem seems to only occur with 1080p 50fps AVCHD material from a Panasonic video camera: dode@linus:/media/dode/WD4TB/data.ext/Video/FET$ mediainfo 00027.MTS General ID : 1 (0x1) Complete name : 00027.MTS Format : BDAV Format/Info : Blu-ray Video File size : 265 MiB Duration : 1mn 26s Overall bit rate mode : Variable Overall bit rate : 25.6 Mbps Maximum Overall bit rate : 28.0 Mbps Video ID : 4113 (0x1011) Menu ID : 1 (0x1) Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.2 Format settings, CABAC : Yes Format settings, ReFrames : 2 frames Format settings, GOP : M=3, N=24 Codec ID : 27 Duration : 1mn 26s Bit rate mode : Variable Bit rate : 24.2 Mbps Maximum bit rate : 25.0 Mbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 50.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.233 Stream size : 249 MiB (94%) Audio ID : 4352 (0x1100) Menu ID : 1 (0x1) Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Codec ID : 129 Duration : 1mn 26s Bit rate mode : Constant Bit rate : 384 Kbps Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Delay relative to video : -40ms Stream size : 3.96 MiB (1%) Text ID : 4608 (0x1200) Menu ID : 1 (0x1) Format : PGS Codec ID : 144 Duration : 1mn 25s Delay relative to video : -40ms If I transcode such material to i.e. DNxHD 1080p 50fps 120Mb/s it works like a charm. Even if I just remux it to i.e. mp4 (ffmpeg -i 00028.MTS -c:v copy -c:a copy 00028.mp4) it works fine, but of course not as fluent as with DNxHD. Also other material such as MPEG-2 works fine.
check this out, maybe it helps: https://forum.kde.org/viewtopic.php?f=265&t=131079
Have you tested with latest version 16.04.2? Can you reproduce? If not please mark as solved.
Sorry for being a bit unresponsive - I just tested 15.12.3 which is installed on my system and already there it works just fine. So I am marking as solved. Thanks!