video freezes after few seconds
video freezes after few seconds: what it usually means
A video that starts and then freezes may have a damaged section, bad timestamps, missing keyframes, a truncated tail, or container metadata that points to data incorrectly.
If the file has real size, there may still be recoverable frames and audio inside. The safest first move is to leave the original untouched and create a separate repaired preview.
Do not trim, re-export, repeatedly convert, or overwrite the damaged file. If you need to experiment, work from a copy and keep the original exactly as it is.