If you have a large collection of old Xvid/AVI files, your 2021 Firestick can play them perfectly using VLC – no conversion needed. For new video archiving, use H.264 or H.265 to take full advantage of Fire OS hardware decoding.
| Aspect | Verdict | |--------|---------| | Native support | ❌ None | | Via 3rd-party app | ✅ Full (VLC/Kodi) | | Performance on 2021 hardware | ✅ Good for SD/720p | | Recommended for archival | ⚠️ Only if avoiding re-encoding | | Long-term solution | Convert to H.264/HEVC for efficiency | xvid video codec for firestick 2021