Completely lossless copying is achieved when the source file is cut at the reference frames of a group of pictures only. This is being visualised when operating the program.[8][9]
With a size short of 100 MB,[6] the software is small and portable, thus it can be started from an external storage medium without prior installation. The FFmpeg framework needs to be present on the computer already.[12][13]
Saving of single images (snapshots) in JPG or PNG format
Adjustment of metadata for rotation or orientation of the video[6]
Zoomable timeline with annotation of the reference frames and jump functions
Display of thumbnails of the video and the waveform of the audio track
Display, name and reorder list of cut segments
Automatically saving the cut list in CSV format; import and export cut lists
Display the generated FFmpeg command line for individual adjustments
Limitations
Typically, the segment start will be "rounded to the nearest previous keyframe", thus the author emphasizes that the program is not meant for exact cutting.[7] This limitation is by design to allow the cutting to be lossless, i.e. without re-encoding the frames adjacent to a cut for the codecs using interframe Motion compensation.[16] Though "smart cut", a feature allowing lossless encoding up to the nearest previous keyframe, then encoding the latter part at a cost of small loss, is available experimentally.[17]
The file handling is not fully compliant with operating systems standards, in particular Softpedia reports awkwardness in the input selection window does not filter compatible files, or the output being saved in the same location without prompting.[12]
^"History of Video Compression". ITU-T. Joint Video Team (JVT) of ISO/IEC MPEG & ITU-T VCEG (ISO/IEC JTC1/SC29/WG11 and ITU-T SG16 Q.6). July 2002. pp. 11, 24–9, 33, 40–1, 53–6. Retrieved 23 January 2021.