MKV Editor, Extractor
Application for editing MKV files (Matroska). Supported formats: mkv, webm, mov, mp4, m4v, avi. Functions: – extracting and adding subtitles (srt, ass, sub), audio (aac, ac3, eac3, dts, flac, mp3, thd), attachments – editing tags, chapters – converting mp4, avi to mkv