Lesson 1.1: Compression Pitfalls in Default Media Pickers
- WhatsApp Gallery compression
- Loss of resolution and bitrate
- The Document attachment workflow
When users attach video files using WhatsApp's default 'Gallery' or 'Camera' options, the application automatically recompresses the stream. While this reduces bandwidth and accelerates delivery, it causes noticeable compression artifacts, lower frame quality, and reduced bitrate. By contrast, selecting the 'Document' attachment option tells WhatsApp to handle the file as raw binary data. In this mode, no re-encoding or transcoding occurs, ensuring the recipient receives the identical file stored on your device.
Practical work
- Open WhatsApp on your Android phone and select any active contact thread.
- Tap the paperclip attachment icon and identify the 'Gallery' vs 'Document' options.