与 Apple Compressor 导出相比,FFmpeg ProRes 隔行扫描伪影非常糟糕

与 Apple Compressor 导出相比,FFmpeg ProRes 隔行扫描伪影非常糟糕

我最近一直在导入我的家庭视频。我想使用 ProRes 422 存档这些视频。

压缩机工作正常。视频弹出时几乎没有任何视觉差异。

然而,FFmpeg 会在移动物体周围产生锯齿状形状。我对视频了解不够多,无法描述这实际上是什么样子,所以我附上了我所看到的帧。

原始视频帧 在此处输入图片描述

压缩器视频帧: 在此处输入图片描述

FFmpeg 视频帧: 在此处输入图片描述

如您所见,前两个难以区分。最后一个是使用以下命令创建的:ffmpeg -i original.mov -c:v prores -profile:v 2 output-ffmpeg.mov

我尝试了能找到的所有 prores 选项。我使用了prores_ks、、prores_awbits/mb 的最高设置等。但都无法解决这个问题。

运动被像素化了。任何稍微模糊的东西都会变成锯齿状的线条。

我如何在 FFmpeg 中纠正这个问题?

编辑:

Here are the logs as requested
ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers
  built with Apple LLVM version 9.1.0 (clang-902.0.39.1)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.0 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.3.0/include/openjpeg-2.3 --enable-nonfree
  libavutil      56. 14.100 / 56. 14.100
  libavcodec     58. 18.100 / 58. 18.100
  libavformat    58. 12.100 / 58. 12.100
  libavdevice    58.  3.100 / 58.  3.100
  libavfilter     7. 16.100 /  7. 16.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  1.100 /  5.  1.100
  libswresample   3.  1.100 /  3.  1.100
  libpostproc    55.  1.100 / 55.  1.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fae4a800000] Duplicated ELST atom
    Last message repeated 1 times
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2006-10-07 16_06_44.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    creation_time   : 2018-04-12T23:08:23.000000Z
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: MacBookPro10,1
    com.apple.quicktime.software: Mac OS X 10.13.4 (17E199)
    com.apple.quicktime.creationdate: 2018-04-12T17:02:55-0600
  Duration: 00:00:24.46, start: 0.000000, bitrate: 30510 kb/s
    Stream #0:0(und): Video: dvvideo (dvc  / 0x20637664), yuv411p(smpte170m/smpte170m/bt709, bottom coded first (swapped)), 720x480 [SAR 8:9 DAR 4:3], 16995 kb/s, SAR 10:11 DAR 15:11, 29.97 fps, 29.97 tbr, 30k tbn, 29.97 tbc (default)
    Metadata:
      creation_time   : 2018-04-12T23:08:23.000000Z
      handler_name    : Core Media Data Handler
      encoder         : DV/DVCPRO - NTSC
      timecode        : 00:00:19;03
    Stream #0:1(und): Data: none (tmcd / 0x64636D74), 0 kb/s
    Metadata:
      creation_time   : 2018-04-12T23:08:23.000000Z
      handler_name    : Core Media Data Handler
      timecode        : 00:00:19;03
    Stream #0:2(und): Audio: pcm_s16le (lpcm / 0x6D63706C), 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2018-04-12T23:08:23.000000Z
      handler_name    : Core Media Data Handler
Stream mapping:
  Stream #0:0 -> #0:0 (dvvideo (native) -> prores (native))
  Stream #0:2 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
Output #0, mov, to 'output-ffmpeg.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    com.apple.quicktime.creationdate: 2018-04-12T17:02:55-0600
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: MacBookPro10,1
    com.apple.quicktime.software: Mac OS X 10.13.4 (17E199)
    encoder         : Lavf58.12.100
    Stream #0:0(und): Video: prores (apcn / 0x6E637061), yuv422p10le(bottom coded first (swapped)), 720x480 [SAR 10:11 DAR 15:11], q=2-31, 200 kb/s, 0.03 fps, 30k tbn, 29.97 tbc (default)
    Metadata:
      creation_time   : 2018-04-12T23:08:23.000000Z
      handler_name    : Core Media Data Handler
      timecode        : 00:00:19;03
      encoder         : Lavc58.18.100 prores
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2018-04-12T23:08:23.000000Z
      handler_name    : Core Media Data Handler
      encoder         : Lavc58.18.100 aac
frame=  134 fps=0.0 q=-0.0 size=   17408kB time=00:00:04.17 bitrate=34191.1kbitsframe=  241 fps=238 q=-0.0 size=   34304kB time=00:00:07.99 bitrate=35168.5kbits[out_0_1 @ 0x7fae4b200f80] 100 buffers queued in out_0_1, something may be wrong.
[out_0_1 @ 0x7fae4b200f80] 1000 buffers queued in out_0_1, something may be wrong.
frame=  314 fps=208 q=-0.0 size=   45056kB time=00:00:10.29 bitrate=35853.6kbitsframe=  344 fps=171 q=-0.0 size=   48896kB time=00:00:11.17 bitrate=35834.8kbitsframe=  359 fps=143 q=-0.0 size=   51712kB time=00:00:11.97 bitrate=35361.1kbitsframe=  389 fps=129 q=-0.0 size=   56064kB time=00:00:12.85 bitrate=35728.5kbitsframe=  419 fps=119 q=-0.0 size=   60416kB time=00:00:13.70 bitrate=36105.2kbitsframe=  449 fps=112 q=-0.0 size=   64256kB time=00:00:14.68 bitrate=35854.0kbitsframe=  464 fps=103 q=-0.0 size=   67072kB time=00:00:15.47 bitrate=35497.6kbitsframe=  494 fps= 99 q=-0.0 size=   71424kB time=00:00:16.20 bitrate=36108.8kbitsframe=  524 fps= 95 q=-0.0 size=   75008kB time=00:00:17.18 bitrate=35758.3kbitsframe=  539 fps= 90 q=-0.0 size=   78336kB time=00:00:17.95 bitrate=35744.4kbitsframe=  569 fps= 87 q=-0.0 size=   82688kB time=00:00:18.93 bitrate=35774.7kbitsframe=  599 fps= 85 q=-0.0 size=   87040kB time=00:00:19.91 bitrate=35802.0kbitsframe=  629 fps= 84 q=-0.0 size=   91392kB time=00:00:20.81 bitrate=35973.7kbitsframe=  659 fps= 82 q=-0.0 size=   96000kB time=00:00:21.83 bitrate=36015.5kbitsframe=  689 fps= 81 q=-0.0 size=  100352kB time=00:00:22.81 bitrate=36029.0kbitsframe=  719 fps= 80 q=-0.0 size=  104704kB time=00:00:23.84 bitrate=35976.9kbitsframe=  732 fps= 79 q=-0.0 Lsize=  107993kB time=00:00:24.43 bitrate=36200.1kbits/s speed=2.62x    
video:107589kB audio:382kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.020916%
[aac @ 0x7fae49829000] Qavg: 243.907

答案1

尝试

ffmpeg -i original.mov -vf yadif -c:v prores -profile:v 2 output-ffmpeg.mov

我们可能需要根据字段顺序对其进行一些调整。

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