Question

我正在尝试使用apply_video实用程序的gmic选项为linux应用gmic过滤器。

./gmic --apply_video 'small.mp4','-denoise 30,10' -o convert.avi

但输出是终端

中的错误

[gmic]-0./ Start G'MIC interpreter.
[gmic]-0./ Apply command 'small.mp4,-denoise 30,10' on video stream '', with output filename '', first frame 0, last frame -1 and frame step 1.
[gmic] *** Error in ./apply_video/*local/*substitute/ *** Command '-basename': Undefined argument '$1', in expression '$1' (for 2 arguments specified).
[gmic] Command '-basename' has the following description: 

-basename:
                    file_path,_variable_name_for_folder

    Return the basename of a file path, and opt. its folder location.
    When specified 'variable_name_for_folder' must starts by an underscore
    (global variable accessible from calling function).

那么gmic的正确语法是什么--apply_video？

我使用的是1.7.3版本

Answer 1

我正在使用最新的可用版本1.7.5_pre，我这样使用它：

$ gmic -w -apply_video input.avi,\"-denoise 30,10\",0,-1,1,output.avi

Answer 2

对于G'MIC选项，您可以使用出色的离线帮助

gmic -h

或

gmic -h -apply_video

从版本1.7.8开始，

    gmic: GREYC's Magic for Image Computing. 

    Version 1.7.8, Copyright (c) 2008-2016, David Tschumperle. 
    (http://gmic.eu)

-apply_video:
                    video_filename,_"command",_first_frame>=0,_last_frame={ >=0 | -1=last },
                      _frame_step>=1,_output_filename

    Apply a G'MIC command on all frames of the specified input video file, in a streamed way.
    If a display window is opened, rendered frames are displayed in it during processing.
    The output filename may have extension '.avi' (saved as a video), or any other usual image file 
      extension (saved as a sequence of images).

    Default values: 'first_frame=0', 'last_frame=-1', 'frame_step=1' and 
      'output_filename=(undefined)'.

什么是gmic apply_video的正确语法

2 个答案: