ffmpeg mjpeg -> h.265 输出视频文件颜色模糊
ffmpeg mjpeg -> h.265 smeared color on output video file
我正在将一些旧的 mjpeg 视频（存储在 .avi 容器中）转换为 h.265（.mp4 容器），但我注意到颜色模糊。使用终端命令：
ffmpeg -y -i "input-file.avi" -c:v libx265 -vtag hvc1 "output-file.mp4"
我得到了下图（注意红色和蓝色是如何向下方拉伸的）。场景中有很多运动，但运动大多是水平的：
知道是什么原因造成的吗？细节和分辨率看起来不错，只是颜色被解释得很奇怪。
完整输出：
ffmpeg version N-105859-g37480b1b85-20220305 Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 11.2.0 (crosstool-NG 1.24.0.533_681aaef)
configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librist --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20220305
libavutil 57. 22.100 / 57. 22.100
libavcodec 59. 21.103 / 59. 21.103
libavformat 59. 17.102 / 59. 17.102
libavdevice 59. 5.100 / 59. 5.100
libavfilter 8. 27.100 / 8. 27.100
libswscale 6. 5.100 / 6. 5.100
libswresample 4. 4.100 / 4. 4.100
libpostproc 56. 4.100 / 56. 4.100
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, avi, from 'E:\PATH\MVI_0168.AVI':
Metadata:
creation_time : 2006-06-14 21:42:10
software : CanonMVI02
Duration: 00:00:53.47, start: 0.000000, bitrate: 5203 kb/s
Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 320x240, 5111 kb/s, 30 fps, 30 tbr, 30 tbn
Stream #0:1: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 11024 Hz, mono, u8, 88 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> hevc (libx265))
Stream #0:1 -> #0:1 (pcm_u8 (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 000001a7ad1aab00] Too many bits 6408.707483 > 6144 per frame requested, clamping to max
x265 [info]: HEVC encoder version 3.5+34-7a5709048
x265 [info]: build info [Windows][GCC 11.2.0][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x265 [info]: Main profile, Level-2 (Main tier)
x265 [info]: Thread pool created using 12 threads
x265 [info]: Slices : 1
x265 [info]: frame threads / pool features : 3 / wpp(4 rows)
x265 [warning]: Source height < 720p; disabling lookahead-slices
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 3
x265 [info]: Keyframe min / max / scenecut / bias : 25 / 250 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp
x265 [info]: tools: b-intra strong-intra-smoothing deblock sao
Output #0, mp4, to 'C:\PATH\test.mp4':
Metadata:
software : CanonMVI02
encoder : Lavf59.17.102
Stream #0:0: Video: hevc (hev1 / 0x31766568), yuvj422p(pc, bt470bg/unknown/unknown, progressive), 320x240, q=2-31, 30 fps, 1000k tbn
Metadata:
encoder : Lavc59.21.103 libx265
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 11025 Hz, mono, fltp, 66 kb/s
Metadata:
encoder : Lavc59.21.103 aac
frame= 1604 fps=187 q=35.9 Lsize= 1818kB time=00:00:53.49 bitrate= 278.4kbits/s speed=6.23x
video:1438kB audio:348kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 1.811161%
x265 [info]: frame I: 9, Avg QP:28.81 kb/s: 1309.05
x265 [info]: frame P: 361, Avg QP:30.64 kb/s: 599.75
x265 [info]: frame B: 1234, Avg QP:35.12 kb/s: 100.04
x265 [info]: Weighted P-Frames: Y:2.2% UV:1.9%
x265 [info]: consecutive B-frames: 2.7% 1.6% 5.1% 40.5% 50.0%
encoded 1604 frames in 8.57s (187.25 fps), 219.29 kb/s, Avg QP:34.08
[aac @ 000001a7ad1aab00] Qavg: 64427.340
您的文件似乎缺少一些颜色信息：
Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 320x240, 5111 kb/s, 30 fps, 30 tbr, 30 tbn
^
|
您可以使用以下命令手动设置它们：
ffmpeg -i in.mkv -c:v libx265 -vtag hvc1 -filter:v "scale=in_color_matrix=auto:in_range=auto:out_color_matrix=bt709:out_range=tv" -pix_fmt:v "yuv420p" -colorspace:v "bt709" -color_primaries:v "bt709" -color_trc:v "bt709" -color_range:v "tv" -c:a copy out.mkv
我正在将一些旧的 mjpeg 视频（存储在 .avi 容器中）转换为 h.265（.mp4 容器），但我注意到颜色模糊。使用终端命令：
ffmpeg -y -i "input-file.avi" -c:v libx265 -vtag hvc1 "output-file.mp4"
我得到了下图（注意红色和蓝色是如何向下方拉伸的）。场景中有很多运动，但运动大多是水平的：
知道是什么原因造成的吗？细节和分辨率看起来不错，只是颜色被解释得很奇怪。
完整输出：
ffmpeg version N-105859-g37480b1b85-20220305 Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 11.2.0 (crosstool-NG 1.24.0.533_681aaef)
configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librist --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20220305
libavutil 57. 22.100 / 57. 22.100
libavcodec 59. 21.103 / 59. 21.103
libavformat 59. 17.102 / 59. 17.102
libavdevice 59. 5.100 / 59. 5.100
libavfilter 8. 27.100 / 8. 27.100
libswscale 6. 5.100 / 6. 5.100
libswresample 4. 4.100 / 4. 4.100
libpostproc 56. 4.100 / 56. 4.100
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, avi, from 'E:\PATH\MVI_0168.AVI':
Metadata:
creation_time : 2006-06-14 21:42:10
software : CanonMVI02
Duration: 00:00:53.47, start: 0.000000, bitrate: 5203 kb/s
Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 320x240, 5111 kb/s, 30 fps, 30 tbr, 30 tbn
Stream #0:1: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 11024 Hz, mono, u8, 88 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> hevc (libx265))
Stream #0:1 -> #0:1 (pcm_u8 (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 000001a7ad1aab00] Too many bits 6408.707483 > 6144 per frame requested, clamping to max
x265 [info]: HEVC encoder version 3.5+34-7a5709048
x265 [info]: build info [Windows][GCC 11.2.0][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x265 [info]: Main profile, Level-2 (Main tier)
x265 [info]: Thread pool created using 12 threads
x265 [info]: Slices : 1
x265 [info]: frame threads / pool features : 3 / wpp(4 rows)
x265 [warning]: Source height < 720p; disabling lookahead-slices
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 3
x265 [info]: Keyframe min / max / scenecut / bias : 25 / 250 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp
x265 [info]: tools: b-intra strong-intra-smoothing deblock sao
Output #0, mp4, to 'C:\PATH\test.mp4':
Metadata:
software : CanonMVI02
encoder : Lavf59.17.102
Stream #0:0: Video: hevc (hev1 / 0x31766568), yuvj422p(pc, bt470bg/unknown/unknown, progressive), 320x240, q=2-31, 30 fps, 1000k tbn
Metadata:
encoder : Lavc59.21.103 libx265
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 11025 Hz, mono, fltp, 66 kb/s
Metadata:
encoder : Lavc59.21.103 aac
frame= 1604 fps=187 q=35.9 Lsize= 1818kB time=00:00:53.49 bitrate= 278.4kbits/s speed=6.23x
video:1438kB audio:348kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 1.811161%
x265 [info]: frame I: 9, Avg QP:28.81 kb/s: 1309.05
x265 [info]: frame P: 361, Avg QP:30.64 kb/s: 599.75
x265 [info]: frame B: 1234, Avg QP:35.12 kb/s: 100.04
x265 [info]: Weighted P-Frames: Y:2.2% UV:1.9%
x265 [info]: consecutive B-frames: 2.7% 1.6% 5.1% 40.5% 50.0%
encoded 1604 frames in 8.57s (187.25 fps), 219.29 kb/s, Avg QP:34.08
[aac @ 000001a7ad1aab00] Qavg: 64427.340
您的文件似乎缺少一些颜色信息：
Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 320x240, 5111 kb/s, 30 fps, 30 tbr, 30 tbn
^
|
您可以使用以下命令手动设置它们：
ffmpeg -i in.mkv -c:v libx265 -vtag hvc1 -filter:v "scale=in_color_matrix=auto:in_range=auto:out_color_matrix=bt709:out_range=tv" -pix_fmt:v "yuv420p" -colorspace:v "bt709" -color_primaries:v "bt709" -color_trc:v "bt709" -color_range:v "tv" -c:a copy out.mkv