KwickClips Computer Systems · 42 sec · free
Can lossy removed data be brought back?
Short answer. No.
Is JPEG lossy or lossless?
Lossy.
Lossy formats
| Media | Format |
|---|---|
| Images | JPEG |
| Audio | MP3, AAC |
| Video | MP4 |
Remember
| Removed data is gone |
| Much smaller file |
Your sent photo looks a little blurry. Why? Lossy compression removed some detail. JPEG does it for images. MP3 and AAC do it for audio. MP4 does it for video. Remember. Removed data is gone. The file is much smaller.
This clip is from the full lesson: Data Compression: Lossy and Lossless — 5 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 10 Computer Science (0478), Edexcel GCSE GCSE Computer Science (1CP2)
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