LosslessCut 3.49.0 has been released, providing a graphical interface for editing multimedia files without transcoding the content. The most requested feature of LosslessCut is cropping and trimming video and audio, for example, to reduce the size of large files shot with an action camera or a quadcopter camera. LosslessCut allows you to select the actual fragments of the recording in the file and discard the superfluous, without carrying out a complete re-encoding and preserving the original quality of the material. Since the processing is done by copying existing data rather than transcoding, the operations are very fast. LosslessCut is written in JavaScript using the Electron platform and is an add-on to the FFmpeg package. Developments are distributed under the GPLv2 license. Builds prepared for Linux (snap, flatpak), macOS and Windows.
Without transcoding, the program can also solve such tasks as attaching an audio track or subtitles to a video, cutting out individual scenes from videos (for example, cutting ads from TV shows), separately saving fragments associated with tags / chapters, rearranging video parts, separating audio and video by different files, changing the type of media container (for example, from MKV to MOV), saving individual video frames as images, creating thumbnails, exporting a fragment to a separate file, changing metadata (for example, location data, recording time, horizontal or vertical orientation ). There are tools for detecting and automatically cutting empty areas (black screen on video and silent fragments in sound files), as well as binding to scene changes.
It is possible to combine fragments from different files, but the files must be encoded using an identical codec and parameters (for example, taken with the same camera without changing the settings). It is possible to edit individual parts with selective recoding of only the changed data, but leaving the rest of the information in the original video that was not affected during editing. During editing, changes are rolled back (undo/redo) and showing the FFmpeg command log (you can repeat typical operations from the command line without using LosslessCut).
Key changes in the new version:
- Silence detection in sound files is provided.
- Provided the ability to configure parameters for determining the absence of a picture on the video.
- Added the ability to split video into separate segments in relation to scene changes or key frames.
- Implemented an experimental scaling mode for the mounting scale.
- Added the ability to combine overlapping segments.
- Improved snapshot function.
- Reorganized settings page.
- Expanded options for extracting frames in the form of images. Added modes to periodically capture an image every few seconds or frames, as well as record images when significant differences between frames are detected.
- The ability to interrupt any operation is provided.
Source: opennet.ru