Created
July 2, 2024 01:11
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sprite sheet generator
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| @echo off | |
| if "%1"=="" ( | |
| echo Please provide the input file as the first argument. | |
| goto :eof | |
| ) | |
| if "%2"=="" ( | |
| echo Please provide the scale as the third argument. | |
| goto :eof | |
| ) | |
| if "%3"=="" ( | |
| echo Please provide the output file name as the fourth argument. | |
| goto :eof | |
| ) | |
| set input_file=%1 | |
| set scale_width=%2 | |
| set output_file=%3 | |
| set video_string="scale=%scale_width%:-1" | |
| if not "%4"=="" ( | |
| set video_string=%video_string%,colorkey=%4:0.1:0.1 | |
| ) | |
| set temp_folder=%temp%\sprite_sheet_frames | |
| mkdir %temp_folder% | |
| ffprobe -loglevel error -stats -select_streams -count_frames -show_entries stream=nb_read_frames -print_format default=nokey=1:noprint_wrappers=1 %input_file% > %temp_folder%/frame_count.txt | |
| set /p frame_count=<%temp_folder%/frame_count.txt | |
| set /a row=1 | |
| set /a col=%frame_count%/%row% | |
| :loop | |
| set /a col=%frame_count%/%row% | |
| if %row% gtr %col% ( | |
| goto found | |
| ) | |
| set /a row=%row%+1 | |
| goto loop | |
| :found | |
| set /a col=%col%+1 | |
| ffmpeg -i %input_file% -nostats -loglevel 0 -vf "%video_string%,split[a][b];[a]alphaextract[am];[b][am]alphamerge" "%temp_folder%/frame_%%04d.bmp" | |
| ffmpeg -i "%temp_folder%/frame_%%04d.bmp" -nostats -loglevel 0 -filter_complex tile=%row%x%col% -update true %output_file% | |
| rmdir %temp_folder% /Q/S | |
| echo Done, the sprite sheet is saved as %output_file%. There are %frame_count% frames on a grid of size %row%x%col% |
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