android - 为 android 转换旧的佳能 avi 视频

Question

这个问题在这里已经有了答案:





Encoding a readable movie by QuickTime using FFMPEG

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FFmpeg converting image sequence to video results in blank video [closed]

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去年关闭。




我有一些使用佳能相机收集的旧视频，它们是 avi 格式。虽然音频工作正常，但我无法在 android 上播放文件，它说 Can't play video, videocodec not supported .我尝试了以下方法，但仍然无法正常工作:

ffmpeg -i ip.avi -c:v libx264 -c:a aac -movflags +faststart op.mp4

原始avi视频信息:

Input #0, avi, from 'ip.avi'
Metadata:
    creation_time   : 2012-11-17 11:38:53
    encoder         : CanonMVI03
  Duration: 00:01:39.90, start: 0.000000, bitrate: 16256 kb/s
    Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 640x480, 14844 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
    Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s

转换后的 mp4 视频信息:

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'op.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:01:39.92, start: 0.000000, bitrate: 2048 kb/s
    Stream #0:0(und): Video: h264 (High 4:2:2) (avc1 / 0x31637661), yuvj422p(pc), 640x480, 1911 kb/s, 30 fps, 30 tbr, 1000k tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler

Answer 1

来自帖子here和 here以下工作:

ffmpeg -i ip.avi -c:v libx264 -c:a aac op.mp4
ffmpeg -i op.mp4 -vf "scale=2*trunc(iw/2):-2,setsar=1" -profile:v main -pix_fmt yuv420p newop.mp4