8/3/2023 0 Comments Imagej forumAs before, the installation of JavaCV Installer plugin is required (which has also moved to its separate update site, as described here ) The plugins have moved to the new update site. Some of ImageJ plugins use of older versions of javacv, javcpp and ffmpeg, so be careful to not break your installation A warning for someone who will probably try these plugins.Ĭurrent versions of the plugins require following dependencies in /jar folder: It is also possible that these plugins could be useful for the community, I believe. And all this message is nothing but an attempt to “Contact an ImageJ admin in Gitter or the ImageJ forum and request that they file a PR which adds Travis support to your repository”. I prepared things necessary for Travis, according to this page. So it would be great to put them into imagej’s maven snapshots repository, and then use it as dependencies.īoth plugins are available at GitHub: this and this. Additionally to their plugin-like functionality I’d like to have a possibility to use their code as API in other plugins. It currently allows a simple encoding scheme - it encodes a selected slice range into AVI container with video compressed as old standard MPEG-4, framerate and bitrate can be specified, and proportional frame rescaling can be done optionally.īoth plugins can be found at my update site:įFmpeg_FrameReader is for video import ( File>Import>Using FFmpeg…)įFmpeg_FrameRecorder is for video export ( File>Save As>Compressed AVI using FFmpeg…) It is more or less similar to the AVI_Reader plugin in functions.Īfter the reader plugin was made I realized that it is possible to make a plugin for encoding a stack into a video using same FFmpeg library. The plugin allows loading video files supported by FFmpeg decoders into a virtual stack and frame by frame linear reading of the video. But finally I’ve managed with this somehow, more or less (although I still have to ignore some updater’s warnings from time to time). Ok, there is some complicated story with dependencies because ImageJ updater cannot distinguish different parts of the library with platform specifications in their names (or may be this is me who cannot…). I used FFmpeg library for this task (trough javacv - a bundle of jna interfaced libraries by bytedeco) and I succeeded. So I decided to write my own plugin which could open compressed video files as virtual stacks. While developing a pair of specialized plugins for certain objects tracking in a stack I often missed a possibility to use various compressed video files as sources for such stacks.ĪFAIK ImageJ can only uncompressed video.
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