AVI to MP4 Converter — Free, No Upload | Input and conversion guide
Converts an AVI video into an MP4 container, copying streams when possible or encoding at the chosen quality.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
Lower is better quality and a bigger file. Ignored when streams can be copied.
How to use this tool
Choose the AVI file and quality, then confirm the target device’s resolution and audio requirements beforehand.
Results and examples
Play the MP4 to verify picture, audio sync, and duration; codec compatibility still needs your own check.
Worked example
Convert one camera AVI first, then check the opening, ending, and lip sync before processing the remaining recordings.
Limitations
- A successful stream copy bypasses the quality slider because the media is not re-encoded.
- The H.264/AAC fallback can change picture and sound and takes longer than remuxing.
Fields
| Field | Guidance and constraints |
|---|---|
| Quality if re-encoding is needed | Lower is better quality and a bigger file. Ignored when streams can be copied. · Accepted range: 18–32 · Input step: 1 |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
Why does the quality setting have no visible effect?
A successful copy keeps the source streams and only changes their container.
Does every AVI work?
The engine must decode or remux the codecs inside it; the filename extension alone is insufficient.
Related tools
You do not need to start over. Continue with the tool that fits your next step.
