Directly usable tools
Tool to associate raw text file (like basic lyrics), to timestamps by playing a corresponding sound source and applying manually each line when relevant. Current time will be associated (with an offset) to corresponding line. Generated lines can be then gathered to be copied in a local file of .lrc format.
Steps: copy/paste reference text in first text area, copy/paste youtube link to audio and hit the "apply sources" button. Wait the first line moment or move time slider to corresponding time, then hit the "Set!" button one second (offset value) after the begin of the line followed by ">". "Set!" will generate the formatted lrc line with corresponding timestamps and display the next line.
Features: If a line is not to be added to the transcription, you can hit the "dodge" button or "+1" button of the text cursor line. You can fast forward/backward text or audio by clicking corresponding texts.
Youtube video URL: