ffmpeg - 颜色分级视频 material 并将原始源显示为画中画，使用 -filter_complex
ffmpeg - color-grading video material AND display original source as picture-in-picture, using -filter_complex
这是我第一次 post 在这个论坛上，所以请保持温柔以防我不小心绊倒了我还不知道的任何论坛规则:)。
我想对水下 GoPro 镜头应用一些颜色分级。为了更快地衡量我的颜色设置的效果（到目前为止，反复试验），我想将原始输入视频流视为画中画（例如，缩小到 50% 甚至 30%），在底部-转换后的输出影片的右上角。
我有一部要进行颜色分级的输入影片。 PIP 应该使用原件作为输入，只是它的缩小版本。
我想使用 ffmpeg 的“-filter_complex”选项来执行画中画，但我在“-filter_complex”上找到的所有示例都将使用两部已经存在的电影。相反，我想让颜色校正后的流成为“-filter_complex”的即时输入，然后呈现 PIP。
这是否可行，一次完成？
下面的两个片段都工作正常，我现在想将它们结合起来并跳过中间颜色分级 TMP 输出的创建，然后在最终的 PIP 创建过程中与原始输出结合。
非常感谢您帮助将这两个单独的步骤合并为一个“-filter_complex”操作！
提前致谢，
掠夺。
[existing code snippets (M$ batch files)]
::declarations/defines::
set "INPUT=<path-to-movie>"
set "TMP=<path-to-intermediate-output-movie>"
set "OUTPUT=<path-to-movie>"
set "FFMPG=<path-to-executable>"
set "QU=9" :: quality settings
set "CONV='"0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1
0 -1 0:0 -1 0 -1 5 -1 0 -1 0'"" :: sharpening convolution filter
::color-grading part::
%FFMPG% -i %INPUT% -vf convolution=%CONV%,colorbalance=rs=%rs%:gs=%gs%:bs=%bs%:rm=%rm%:gm=%gm%:bm=%bm%:rh=%rh%:gh=%gh%:bh=%bh% -q:v %QU% -codec:v mpeg4 %TMP%
::PIP part::
%FFMPG% -i %TMP% -i %INPUT% -filter_complex "[1]scale=iw/3:ih/3
[pip]; [0][pip] overlay=main_w-overlay_w-10:main_h-overlay_h-10" -q:v
%QU% -codec:v mpeg4 %OUTPUT%
[/existing code]
ffmpeg -i input -filter_complex "[0]scale=iw/3:-1[pip];[0]convolution,colorbalance[bg];[bg][pip]overlay=main_w-overlay_w-10:main_h-overlay_h-10[v]" -map "[v]" -map 0:a -c:a copy output
这是一个简化的命令。您需要输入卷积和色彩平衡值并将其集成到批处理文件中。
描述：
[0] 指的是第一个（且仅在本例中）输入文件，是比例过滤器的输入。 scale 的输出被任意命名为 [pip]。你可以给它起任何你喜欢的名字。有关详细信息，请参阅 Filtering Introduction, Filtergraph description, and Filtergraph syntax。 [0]也作为卷积的输入。卷积的输出直接馈送到色彩平衡。过滤器的线性链通过逗号连接（见上文 link）。 colorbalance 的输出名为 [bg].- overlay 需要两个输入，即
[bg] 和 [pip]。 [pip] 叠加在 [bg] 上。 overlay 的输出命名为 [v].
-map option is used to manually select the streams to put into the output. It is generally a good idea to get into the habit to use -map unless you fully understand the default stream selection 行为。- 我假设输入音频是 AAC，因此您可以流式复制音频而不是重新编码。如果没有，那么您可以删除
-c:a copy，系统将根据您的输出文件格式选择默认编码器，或者您可以选择特定的编码器。
这是一个修改后的（现在可用的）颜色分级批处理文件。
[revised code (M$ batch file)]
@echo off
cls
rem ------------------------------------------------------------------------
rem Purpose: color correction, saturation, sharpening for underwater video.
rem Function: color-grades video, inserts the original video in lower right
rem corner as a PIP (picture-in-picture) overlay, for comparison
rem Error handling: basic.
rem Checks for availability of input video (%IN%)
rem Deletes possibly pre-existing output file (%OUTP%)
rem Inputs: %IN%
rem Outputs: %OUTP% (with ungraded video as PIP)
rem Parameters: To be tested with actual GoPro footage (manual 6500K setting)
rem ------------------------------------------------------------------------
::declarations/defines::
set "IN=<path-to-movie>"
set "OUTP=<path-to-movie>"
set "FFMPG=<path-to-executable>"
::test availability of input file::
if not exist %IN% (
echo "Error: No input file (in.mp4) found. Aborting script."
goto eof
)
::remove potentially existing output file::
if exist %OUTP% DEL %OUTP%
::convolution (sharpening)::
set "CONV='0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 0 -1 0'"
::equalizer settings::
set "CONTRAST=1.0" :: Contrast in range -1000 to 1000 (normal is 1.0)
set "BRIGHT=0.0" :: Brightness in range -1.0 to 1.0 (normal is 0.0)
set "SATUR=1.05" :: Saturation in range 0.0 to 3.0 (normal is 1.0; the higher, the more pure the colors will get)
set "GAMMA=1.15" :: Gamma in range 0.1 to 10.0 (normal is 1.0; greater 1.0 is more contrast, darker shades, brighter highlights)
::colorlevels settings::
set "rmin=0.10" :: colorlevel red minimum
set "gmin=0.05" :: colorlevel green minimum
set "bmin=0.05" :: colorlevel blue minimum
set "rmax=0.70" :: colorlevel red maximum
set "gmax=1.00" :: colorlevel green maximum
set "bmax=0.95" :: colorlevel blue maximum
::colorbalance and hue::
set "HUE=-5" :: Color correction (hue), negative shifts towards red and positive towards blue, normal is 0, typical is -30...+30 range
set "rs=+0.00" :: red - cyan :: Adjust red, green and blue shadows (darkest pixels)
set "gs=-0.10" :: green - magenta ::
set "bs=-0.10" :: blue - yellow ::
set "rm=+0.10" :: red - cyan :: Adjust red, green and blue midtones (medium pixels)
set "gm=-0.25" :: green - magenta ::
set "bm=-0.25" :: blue - yellow ::
set "rh=+0.05" :: red - cyan :: Adjust red, green and blue highlights (brightest pixels)
set "gh=-0.20" :: green - magenta ::
set "bh=-0.20" :: blue - yellow ::
::equalizer (contrast, brightness, saturation, gamma)::
set "EQUALIZER=contrast=%CONTRAST%:brightness=%BRIGHT%:saturation=%SATUR%:gamma=%GAMMA%"
::colorlevels::
set "COLORLEVELS=rimin=%rmin%:gimin=%gmin%:bimin=%bmin%:rimax=%rmax%:gimax=%gmax%:bimax=%bmax%"
::colorbalance::
set "COLORBALANCE=rs=%rs%:gs=%gs%:bs=%bs%:rm=%rm%:gm=%gm%:bm=%bm%:rh=%rh%:gh=%gh%:bh=%bh%"
::applying all of these filter settings (color-grading and PIP combined)::
::using libx264 encoding and "-preset ultrafast", "-crf 18" for high quality, as recommended (for quick preview purposes rather than smallest file sizes)::
%FFMPG% -i %IN% -filter_complex "[0]scale=iw/3:-1[pip];[0]colorbalance=%COLORBALANCE%[1],[1]hue=h=%HUE%[2],[2]colorlevels=%COLORLEVELS%[3],[3]eq=%EQUALIZER%[4],[4]convolution=%CONV%[bg];[bg][pip]overlay=main_w-overlay_w-10:main_h-overlay_h-10 [v]" -map "[v]" -map 0:a -c:a copy -c:v libx264 -preset ultrafast -crf 18 %OUTP%
goto eof
:: End
:eof
[/revised code]
很好的回复，学到了很多东西，非常感谢:))!!
干杯，乌鸦。
这是我第一次 post 在这个论坛上，所以请保持温柔以防我不小心绊倒了我还不知道的任何论坛规则:)。
我想对水下 GoPro 镜头应用一些颜色分级。为了更快地衡量我的颜色设置的效果（到目前为止，反复试验），我想将原始输入视频流视为画中画（例如，缩小到 50% 甚至 30%），在底部-转换后的输出影片的右上角。
我有一部要进行颜色分级的输入影片。 PIP 应该使用原件作为输入，只是它的缩小版本。
我想使用 ffmpeg 的“-filter_complex”选项来执行画中画，但我在“-filter_complex”上找到的所有示例都将使用两部已经存在的电影。相反，我想让颜色校正后的流成为“-filter_complex”的即时输入，然后呈现 PIP。
这是否可行，一次完成？
下面的两个片段都工作正常，我现在想将它们结合起来并跳过中间颜色分级 TMP 输出的创建，然后在最终的 PIP 创建过程中与原始输出结合。 非常感谢您帮助将这两个单独的步骤合并为一个“-filter_complex”操作！
提前致谢， 掠夺。
[existing code snippets (M$ batch files)]
::declarations/defines::
set "INPUT=<path-to-movie>"
set "TMP=<path-to-intermediate-output-movie>"
set "OUTPUT=<path-to-movie>"
set "FFMPG=<path-to-executable>"
set "QU=9" :: quality settings
set "CONV='"0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1
0 -1 0:0 -1 0 -1 5 -1 0 -1 0'"" :: sharpening convolution filter
::color-grading part::
%FFMPG% -i %INPUT% -vf convolution=%CONV%,colorbalance=rs=%rs%:gs=%gs%:bs=%bs%:rm=%rm%:gm=%gm%:bm=%bm%:rh=%rh%:gh=%gh%:bh=%bh% -q:v %QU% -codec:v mpeg4 %TMP%
::PIP part::
%FFMPG% -i %TMP% -i %INPUT% -filter_complex "[1]scale=iw/3:ih/3
[pip]; [0][pip] overlay=main_w-overlay_w-10:main_h-overlay_h-10" -q:v
%QU% -codec:v mpeg4 %OUTPUT%
[/existing code]
ffmpeg -i input -filter_complex "[0]scale=iw/3:-1[pip];[0]convolution,colorbalance[bg];[bg][pip]overlay=main_w-overlay_w-10:main_h-overlay_h-10[v]" -map "[v]" -map 0:a -c:a copy output
这是一个简化的命令。您需要输入卷积和色彩平衡值并将其集成到批处理文件中。
描述：
[0]指的是第一个（且仅在本例中）输入文件，是比例过滤器的输入。 scale 的输出被任意命名为[pip]。你可以给它起任何你喜欢的名字。有关详细信息，请参阅 Filtering Introduction, Filtergraph description, and Filtergraph syntax。[0]也作为卷积的输入。卷积的输出直接馈送到色彩平衡。过滤器的线性链通过逗号连接（见上文 link）。 colorbalance 的输出名为[bg].- overlay 需要两个输入，即
[bg]和[pip]。[pip]叠加在[bg]上。 overlay 的输出命名为[v]. -mapoption is used to manually select the streams to put into the output. It is generally a good idea to get into the habit to use-mapunless you fully understand the default stream selection 行为。- 我假设输入音频是 AAC，因此您可以流式复制音频而不是重新编码。如果没有，那么您可以删除
-c:a copy，系统将根据您的输出文件格式选择默认编码器，或者您可以选择特定的编码器。
这是一个修改后的（现在可用的）颜色分级批处理文件。
[revised code (M$ batch file)]
@echo off
cls
rem ------------------------------------------------------------------------
rem Purpose: color correction, saturation, sharpening for underwater video.
rem Function: color-grades video, inserts the original video in lower right
rem corner as a PIP (picture-in-picture) overlay, for comparison
rem Error handling: basic.
rem Checks for availability of input video (%IN%)
rem Deletes possibly pre-existing output file (%OUTP%)
rem Inputs: %IN%
rem Outputs: %OUTP% (with ungraded video as PIP)
rem Parameters: To be tested with actual GoPro footage (manual 6500K setting)
rem ------------------------------------------------------------------------
::declarations/defines::
set "IN=<path-to-movie>"
set "OUTP=<path-to-movie>"
set "FFMPG=<path-to-executable>"
::test availability of input file::
if not exist %IN% (
echo "Error: No input file (in.mp4) found. Aborting script."
goto eof
)
::remove potentially existing output file::
if exist %OUTP% DEL %OUTP%
::convolution (sharpening)::
set "CONV='0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 0 -1 0'"
::equalizer settings::
set "CONTRAST=1.0" :: Contrast in range -1000 to 1000 (normal is 1.0)
set "BRIGHT=0.0" :: Brightness in range -1.0 to 1.0 (normal is 0.0)
set "SATUR=1.05" :: Saturation in range 0.0 to 3.0 (normal is 1.0; the higher, the more pure the colors will get)
set "GAMMA=1.15" :: Gamma in range 0.1 to 10.0 (normal is 1.0; greater 1.0 is more contrast, darker shades, brighter highlights)
::colorlevels settings::
set "rmin=0.10" :: colorlevel red minimum
set "gmin=0.05" :: colorlevel green minimum
set "bmin=0.05" :: colorlevel blue minimum
set "rmax=0.70" :: colorlevel red maximum
set "gmax=1.00" :: colorlevel green maximum
set "bmax=0.95" :: colorlevel blue maximum
::colorbalance and hue::
set "HUE=-5" :: Color correction (hue), negative shifts towards red and positive towards blue, normal is 0, typical is -30...+30 range
set "rs=+0.00" :: red - cyan :: Adjust red, green and blue shadows (darkest pixels)
set "gs=-0.10" :: green - magenta ::
set "bs=-0.10" :: blue - yellow ::
set "rm=+0.10" :: red - cyan :: Adjust red, green and blue midtones (medium pixels)
set "gm=-0.25" :: green - magenta ::
set "bm=-0.25" :: blue - yellow ::
set "rh=+0.05" :: red - cyan :: Adjust red, green and blue highlights (brightest pixels)
set "gh=-0.20" :: green - magenta ::
set "bh=-0.20" :: blue - yellow ::
::equalizer (contrast, brightness, saturation, gamma)::
set "EQUALIZER=contrast=%CONTRAST%:brightness=%BRIGHT%:saturation=%SATUR%:gamma=%GAMMA%"
::colorlevels::
set "COLORLEVELS=rimin=%rmin%:gimin=%gmin%:bimin=%bmin%:rimax=%rmax%:gimax=%gmax%:bimax=%bmax%"
::colorbalance::
set "COLORBALANCE=rs=%rs%:gs=%gs%:bs=%bs%:rm=%rm%:gm=%gm%:bm=%bm%:rh=%rh%:gh=%gh%:bh=%bh%"
::applying all of these filter settings (color-grading and PIP combined)::
::using libx264 encoding and "-preset ultrafast", "-crf 18" for high quality, as recommended (for quick preview purposes rather than smallest file sizes)::
%FFMPG% -i %IN% -filter_complex "[0]scale=iw/3:-1[pip];[0]colorbalance=%COLORBALANCE%[1],[1]hue=h=%HUE%[2],[2]colorlevels=%COLORLEVELS%[3],[3]eq=%EQUALIZER%[4],[4]convolution=%CONV%[bg];[bg][pip]overlay=main_w-overlay_w-10:main_h-overlay_h-10 [v]" -map "[v]" -map 0:a -c:a copy -c:v libx264 -preset ultrafast -crf 18 %OUTP%
goto eof
:: End
:eof
[/revised code]
很好的回复，学到了很多东西，非常感谢:))!!
干杯，乌鸦。