[疑似bug]下载的视频和音频时间长度不一致

[kite8]

视频地址

当我下载之后, 尝试用ffmpeg合并,报错, 我仔细观察了音频和视频的信息, 发现两者的时间长度并不一致, 不知道这个是否是造成合并失败的原因?

视频的视频长度: 00:08:16.80, start: 0.002044

ffmpeg -i "角色属性条的制作 (1).mp4"

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '角色属性条的制作 (1).mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isomavc1
    creation_time   : 1970-01-01T00:00:02.000000Z
  Duration: 00:08:16.80, start: 0.002044, bitrate: 912 kb/s
  Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 910 kb/s, 15 fps, 15 tbr, 90k tbn (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:02.000000Z
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
      encoder         : dailymotion/hls.js

音频的时间长度: Duration: 00:08:16.86, start: 0.000000

ffmpeg -i 角色属性条的制作.mp4

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '角色属性条的制作.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isomavc1
    creation_time   : 1970-01-01T00:00:02.000000Z
  Duration: 00:08:16.86, start: 0.000000, bitrate: 54 kb/s
  Stream #0:0[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 47 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:02.000000Z
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]

[kite8]

我这边也用示例链接试了一下,发现也有同样的问题, 视频和音频的时间长度不一致.

视频轨时间长度: Duration: 00:00:30.13, start: 0.083333

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Media Source 提取示例 (1).mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isomavc1
    creation_time   : 1970-01-01T00:00:02.000000Z
  Duration: 00:00:30.13, start: 0.083333, bitrate: 1066 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 1062 kb/s, SAR 1:1 DAR 16:9, 24 fps, 24 tbr, 90k tbn, 48 tbc (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:02.000000Z
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
      encoder         : dailymotion/hls.js

音频轨时间长度: Duration: 00:00:30.18, start: 0.036871

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Media Source 提取示例.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isomavc1
    creation_time   : 1970-01-01T00:00:02.000000Z
  Duration: 00:00:30.18, start: 0.036871, bitrate: 52 kb/s
  Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 45 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:02.000000Z
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]