WORKLAZY TOOLS

Online Video Editor

Trim, merge, and extract audio from videos. Quickly and easily edit your videos directly in your browser.

Use this tool directly in your browser without installing software or signing in.

• Unlimited files, 10 groups
• Fast lossless trimming
• Copy ranges across groups
• Individual files or ZIP
• Audio stream controls

Adding files and group outputs

Open the file picker or drop files repeatedly to append videos. Arrange them in up to 10 groups; each group can export individually or concatenate selected ranges. Results appear as they finish, and ZIP creation is optional. MP3 and AAC results can be sent directly to Audio Studio in a new tab.

Passthrough and trim accuracy

Passthrough is fast and lossless because it avoids re-encoding. The first audio track can be copied, removed, or converted. Incompatible source audio reports an error rather than changing quality silently. Trim starts may move to a nearby keyframe, and videos with different codecs or dimensions cannot be concatenated without re-encoding.

Bitrate and sample rate

Bitrate is data stored per second; higher values generally increase quality and file size. Sample rate is how often audio is sampled per second. Choose a preset or enter a custom value.

Synchronized playback and split fullscreen

Play videos in a group together and move them with one playhead. Split fullscreen lets you compare the group on one screen while listening to one selected video. Start and end ranges from one group can be applied at once to videos in the same card positions in other groups.

Large sources and output limits

Large source videos are not copied into memory all at once. Completed results and ZIP files are kept as temporary files in supported browsers, with the existing memory path used automatically when that is unavailable. Oversized passthrough estimates are reported before processing.

Input compatibility

MP4, MOV, and WebM usually preview in current browsers. If MKV or AVI preview fails, the tool separately reads duration and dimensions for numeric trimming, but not every internal compression format is guaranteed.

Using multiple CPU cores

Supported browsers process videos with multiple CPU cores. When this is unavailable, the tool automatically uses a functionally equivalent single-thread compatibility mode.