If you have sound but no video (or vice versa), try using a versatile player like VLC Media Player which supports almost all MP4 encoding formats.
A patch was released to ensure the server correctly processed request headers for seeking within a video file. If you are seeing errors related to this, ensure your web server software is updated to a modern version. 2. WhatsApp and Distributed Systems Logging 521 mp4
If you are a developer hosting this file, ensure your server supports "Byte-Range Requests," which allows mobile devices to request specific parts of the MP4 file for playback. If you have sound but no video (or
If the video stops abruptly, it may be a partial download. Try re-downloading the file. Try re-downloading the file
One of the most prominent references is within the Nginx bug tracker , which dealt with playback issues for MP4 files on iPad devices.
A bug in how the server handled start and end arguments for MP4 streaming, which prevented videos from playing correctly on iOS devices.