Trim clips, pull out the sound and fix subtitles, on your own device
Everything here runs in your browser. Files are never uploaded.Video files are big, which is why almost every video site wants you to upload first and wait. These do not. Cut the clips you need out of a recording, take the audio track out of it, adjust a soundtrack that is too loud, or repair subtitles that run ahead of the picture, all with the file staying on your own machine.
Trim Video takes several clips out of one recording in a single pass and keeps the original quality wherever it can, which is the difference between trimming and re-editing. A long screen recording with three useful minutes in it becomes three short files.
Video to MP3 lifts the audio track out: a recorded lecture, a song from a video, a meeting you want to listen to while walking. Where the format allows, the track is copied rather than re-encoded, so nothing is lost.
Volume Changer and Audio Cutter work on the track once it is out, for a soundtrack that is too quiet or a recording that should start later than it does.
Subtitle Converter turns SRT into VTT and back, and shifts every timestamp by a fixed amount. Subtitles that are consistently two seconds early are not broken, they are offset, and one number fixes the whole file.
There is no re-encoding to a different codec, no timeline, no transitions and no export at a different resolution. Those need either a server, which this site deliberately does not use for files, or a desktop editor. What is here is the set of jobs that are exact, quick, and ruined by a queue: cut, extract, offset.
No. The file is read by your browser from your own disk, which is also why a two gigabyte recording starts instantly instead of after a twenty minute upload.
Not where it can be avoided. Cuts are made on keyframes where possible so the picture is copied untouched; a cut demanded at an exact frame in between needs that section re-encoded and the tool says so.
Large ones are fine because nothing is uploaded, but the whole file has to fit in your device memory while it is open. A few gigabytes is comfortable on a computer and much less on an older phone.
Usually because the subtitle file was timed against a version of the video with a different start, such as one with the broadcaster logo trimmed off. A fixed shift of the whole file corrects it; use Subtitle Converter and type the offset.
Yes, with MKV to MP4. When the video inside is H.264, as it usually is, the frames are copied into the MP4 rather than re-encoded, so it is quick and loses nothing. WebM and other codecs are re-encoded in the browser, and the page says so before you start.
Yes, with no account, no watermark on your video and no daily limit.