| Summary: | 15.04.1 Unusable - extremely slow timeline | ||
|---|---|---|---|
| Product: | [Applications] kdenlive | Reporter: | Torsten Römer <dode> |
| Component: | User Interface | Assignee: | Jean-Baptiste Mardelle <jb> |
| Status: | RESOLVED FIXED | ||
| Severity: | grave | CC: | dode, snd.noise |
| Priority: | NOR | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | Kubuntu | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
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Description
Torsten Römer
2015-06-09 19:32:15 UTC
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! |