我正在尝试将我的编码设置从 Mac 切换到 Windows。作为其中的一部分，我正在尝试让 FFmpeg 作为我的 ProRes 编码器工作。
我正在将 10 位未压缩格式转换为 ProRes 422 HQ。转换后，与原始未压缩格式和 Adobe Media Encoder 的 ProRes 相比，颜色明显变暗。
我在用着
./ffmpeg -i testfile.mov -c:v prores_ks -profile:v 3 -pix_fmt yuv422p10le -c:a copy prores422_ks4.mov
我尝试了 ProRes 和 Prores_KS 编解码器，结果相同。我对文件运行了 MediaInfo，得到了以下结果：
Adobe Media Encoder（正确颜色）
Format : MPEG-4 Format profile : QuickTime Codec ID : qt 2005.03 (qt ) File size : 208 MiB Duration : 13 s 13 ms Overall bit rate mode : Variable Overall bit rate : 134 Mb/s Encoded date : UTC 2018-03-14 22:08:26 Tagged date : UTC 2018-03-14 22:09:38 Writing library : Apple QuickTime TIM : 00:59:53:00 TSC : 24000 TSZ : 1001 Video ID : 1 Format : ProRes Format version : Version 0 Format profile : 422 HQ Codec ID : apch Duration : 13 s 13 ms Bit rate mode : Variable Bit rate : 132 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:2 Scan type : Progressive Bits/(Pixel*Frame) : 2.654 Stream size : 205 MiB (98%) Writing library : Apple Language : English Encoded date : UTC 2018-03-14 22:08:26 Tagged date : UTC 2018-03-14 22:08:26 Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709
FFmpeg（颜色较深）
Format : MPEG-4 Format profile : QuickTime Codec ID : qt 0000.02 (qt ) File size : 195 MiB Duration : 13 s 55 ms Overall bit rate mode : Variable Overall bit rate : 125 Mb/s Writing application : Lavf57.83.100 Video ID : 1 Format : ProRes Format version : Version 0 Format profile : 422 HQ Codec ID : apch Duration : 13 s 55 ms Bit rate mode : Variable Bit rate : 124 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:2 Scan type : Progressive Bits/(Pixel*Frame) : 2.485 Stream size : 192 MiB (99%) Writing library : Lavc Language : English Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709
原始影片
Format : MPEG-4 Format profile : QuickTime Codec ID : qt 2005.03 (qt ) File size : 2.42 GiB Duration : 13 s 55 ms Overall bit rate : 1 592 Mb/s Encoded date : UTC 2018-03-14 20:32:39 Tagged date : UTC 2018-03-14 20:32:39 Video ID : 1 Format : RGB Codec ID : r210 Codec ID/Hint : Blackmagic Design Duration : 13 s 55 ms Bit rate mode : Constant Bit rate : 1 591 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Scan type : Progressive Bits/(Pixel*Frame) : 32.000 Stream size : 2.42 GiB (100%) Language : English Encoded date : UTC 2018-03-14 20:32:39 Tagged date : UTC 2018-03-14 20:32:39 Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709
以下是 FFMpeg 的输出
Guessed Channel Layout for Input Stream #0.2 : stereo
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'testfile.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2018-03-14T20:32:39.000000Z
Duration: 00:00:13.05, start: 0.000000, bitrate: 1592473 kb/s
Stream #0:0(eng): Video: r210 (r210 / 0x30313272), rgb48le(10 bpc, bt709, progressive), 1920x1080, 1590933 kb/s, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 24k tbn, 24k tbc (default)
Metadata:
creation_time : 2018-03-14T20:32:39.000000Z
handler_name : Linux Alias Data Handler
encoder : 10 bit packed RGB (r210)
timecode : 00:59:53:00
Stream #0:1(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
Metadata:
rotate : 0
creation_time : 2018-03-14T20:32:39.000000Z
handler_name : Libquicktime Time Code Media Handler
reel_name : untitled
timecode : 00:59:53:00
Stream #0:2(eng): Audio: pcm_s16be (lpcm / 0x6D63706C), 48000 Hz, stereo, s16, 1536 kb/s (default)
Metadata:
creation_time : 2018-03-14T20:32:39.000000Z
handler_name : Linux Alias Data Handler
Stream mapping:
Stream #0:0 -> #0:0 (r210 (native) -> prores (prores_ks))
Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
Output #0, mov, to 'prores422_ks9.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
encoder : Lavf57.83.100
Stream #0:0(eng): Video: prores (prores_ks) (apch / 0x68637061), yuv422p10le, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 23.98 fps, 24k tbn, 23.98 tbc (default)
Metadata:
creation_time : 2018-03-14T20:32:39.000000Z
handler_name : Linux Alias Data Handler
timecode : 00:59:53:00
encoder : Lavc57.107.100 prores_ks
Stream #0:1(eng): Audio: pcm_s16be (lpcm / 0x6D63706C), 48000 Hz, stereo, s16, 1536 kb/s (default)
Metadata:
creation_time : 2018-03-14T20:32:39.000000Z
handler_name : Linux Alias Data Handler
以下是一些示例图像，展示了这种变化。我无法发布完整画面或任何可识别内容的内容，但这里有一些颜色样本。
注意：我在 Media Encoder 中剪掉了末尾的一两个黑框
我是 FFmpeg 的菜鸟，所以任何帮助我都会非常感激！我想我忽略了一些显而易见的东西。