For HTML5 video:
javascript: document.getElementsByTagName("video")[0].currentTime = parseFloat( prompt("Enter the playback time in the video in seconds to jump:") );
For HTML5 audio:
javascript: document.getElementsByTagName("audio")[0].currentTime = parseFloat( prompt("Enter the playback time in the sound track in seconds to jump to:") );
For HTML5 video:
`javascript: document.getElementsByTagName("video")[0].currentTime = parseFloat( prompt("Enter the playback time in the video in seconds to jump:") );`
For HTML5 audio:
`javascript: document.getElementsByTagName("audio")[0].currentTime = parseFloat( prompt("Enter the playback time in the sound track in seconds to jump to:") );`
(post is archived)