佳能微单死机MP4变成DAT打不开能不能修好
这是很多佳能数码相机用户经常遇到的问题，很多人都知道佳能DAT能修复，一般数据恢复工作者都可以修复DAT/MOV格式的文件，但是当遇到佳能新机型如EOS R，EOS R5、 EOS R6，M50, 90D等等的DAT/MP4，会发现又是一个难题。如，佳能微单EOS R6相机录视频中死机了，本来应该为MP4视频的却变成了DAT，一个打不开的数据文件，以下面所列。
| 视频格式 | DAT(MP4) |
| 视频大小 | 9GB |
| 录像时长 | 30分钟 |
| 相机型号 | 佳能EOS R6 |
| 损坏原因 | 录像断电导致视频文件损坏 |
| 修复要求 | 完美修复，不能有花屏、卡顿和不同步问题 |
怎么修复才能做到无损无坏帧
首先要了解文件的编码情况，后在附上这个型号文件编码参数供参考。从这个型号的视频参数不难看出，佳能MP4和MOV的不同，尝试用老的技术手段修复出来达不到修复要求。怎么办？唯有更新修复程序了，重写吧，根据新编码写新程序，反复测试，解决问题。
| Video | |
| Format | AVC |
| Format/Info | Advanced Video Codec |
| Format profile | High@L5.1 |
| Format settings | CABAC / 2 Ref Frames |
| Format settings, CABAC | Yes |
| Format settings, Reference frames | 2 frames |
| Format settings, GOP | M=3, N=30 |
| Codec ID | avc1 |
| Codec ID/Info | Advanced Video Coding |
| Bit rate | 60.7 Mb/s |
| Width | 1 920 pixels |
| Height | 1 080 pixels |
| Frame rate mode | Constant |
| Frame rate | 59.940 (60000/1001) FPS |
| Color space | YUV |
| Bit depth | 8 bits |
| Scan type | Progressive |
| Stream size | 40.6 MiB (99%) |
| Language | English |
| Encoded date | UTC 2021-10-18 21 |
| Tagged date | UTC 2021-10-18 21 |
| Color range | Full |
| Color primaries | BT.709 |
| Transfer characteristics | BT.709 |
| Matrix coefficients | BT.709 |
| Codec configuration box | avcC |
| Audio | |
| Format | AAC LC |
| Format/Info | Advanced Audio Codec Low Complexity |
| Codec ID | mp4a-40-2 |
| Bit rate mode | Constant |
| Bit rate | 256 kb/s |
| Channel(s) | 2 channels |
| Channel layout | L R |
| Sampling rate | 48.0 kHz |
| Frame rate | 46.875 FPS (1024 SPF) |
| Compression mode | Lossy |
| Stream size | 173 KiB (0%) |
| Language | English |
| Encoded date | UTC 2021-10-18 21 |
| Tagged date | UTC 2021-10-18 21 |
| Other | |
| Type | Time code |
| Format | QuickTime TC |
| Bit rate mode | Constant |
| Frame rate | 59.940 (60000/1001) FPS |
| Time code, striped | Yes |
| Language | English |
| Encoded date | UTC 2021-10-18 21 |
| Tagged date | UTC 2021-10-18 21 |
