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怎么修复H.265/HEVC编码的MP4视频文件

H.265/HEVC是新的MP4视频编码,继H.264之后的新标准。H.265标准改善了视频码流、编码的质量、延时和算法复杂度之间的关系,相对于上一代达到最优化设置。随着H.265慢慢的普及开来了,市面上常见的采用H.265编码的设备有:三星相机,大疆无人机,苹果手机,华为手机,GOPRO运行相机等。

如果在拍摄中遇到异常:电池电量不足,异常断电,拷贝不完整,存储损坏等出现H.265编码的MP4文件损坏,视频无法渲染,播放失败,H.265编码的MP4文件的修复较H.264的编码视频难度更大。

针对于H.265编码的MP4的视频损坏,最好的办法还是编码级修复。先分析视频的数据,利用编码特性来对损坏视频进行修复,这种办法的修复结果完美的,画面流畅,声音同步,支持编辑。

以下为典型的H.265视频编码,可供参考:

General
Complete name                            三星SAM_1117.MP4
Format                                    MPEG-4
Format profile                            Base Media / Version 2
Codec ID                                  mp42 (qt  /isom/hvc1)
File size                                 289 MiB
Duration                                  34 s 720 ms
Overall bit rate mode                     Variable
Overall bit rate                          69.9 Mb/s
Encoded date                              UTC 2018-02-20 19
Tagged date                               UTC 2018-02-20 19
Video
ID                                       1
Format                                    HEVC
Format/Info                               High Efficiency Video Coding
Format profile                            Main@L5.1@Main
Codec ID                                  hvc1
Codec ID/Info                             High Efficiency Video Coding
Duration                                  34 s 701 ms
Bit rate                                  69.7 Mb/s
Width                                     3 840 pixels
Height                                    2 160 pixels
Display aspect ratio                     16
Frame rate mode                           Constant
Frame rate                                29.970 (30000/1001) FPS
Color space                               YUV
Chroma subsampling                       4
Bit depth                                 8 bits
Bits/(Pixel*Frame)                       0.28
Stream size                               288 MiB (100%)
Language                                  English
Encoded date                              UTC 2018-02-20 19
Tagged date                               UTC 2018-02-20 19
Color range                               Full
Color primaries                           BT.709
Transfer characteristics                  BT.709
Matrix coefficients                       BT.709
Codec configuration box                   hvcC
Audio
ID                                       2
Format                                    AAC LC
Format/Info                               Advanced Audio Codec Low Complexity
Codec ID                                  mp4a-40-2
Duration                                  34 s 720 ms
Source duration                           34 s 688 ms
Bit rate mode                             Variable
Channel(s)                                2 channels
Channel layout                            L R
Sampling rate                             48.0 kHz
Frame rate                                46.875 FPS (1024 SPF)
Compression mode                          Lossy
Source stream size                        807 KiB (0%)
Language                                  English
Encoded date                              UTC 2018-02-20 19
Tagged date                               UTC 2018-02-20 19
mdhd_Duration                            34720
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