nico-lab’s gists

nico-lab / ffmpeg_cut_and_concat.bat

Last active March 16, 2018 21:10

comskip_vdr_to_ffmpeg_cut_and_concat

	@echo off

	set VIDEO="video.ts"
	set MEDIAINFO="MediaInfo.exe"
	set FFMPEG="ffmpeg.exe"

	%FFMPEG% -analyzeduration 100M -probesize 100M -i %VIDEO% -acodec copy -vn %VIDEO%.aac

	set time1=%1
	set sec0=%time1:~-5,-3%

nico-lab / ffmpeg_cut_and_concat2.bat

Last active August 29, 2015 13:56

	@echo off

	set VIDEO="video.ts"
	set MEDIAINFO="MediaInfo.exe"
	set FFMPEG="ffmpeg.exe"

	%FFMPEG% -analyzeduration 100M -probesize 100M -i %VIDEO% -acodec copy -vn %VIDEO%.aac

	set time1=%1
	set sec0=%time1:~-5,-3%

nico-lab / png_min.bat

Created February 18, 2015 13:08

ffmpeg で PNG 最適

	echo off
	set FFMPEG="H:\ffmpeg.exe"

	for %%a in (%*) do %FFMPEG% -i %%a -filter_complex palettegen -y %%a_tmp.png && %FFMPEG% -i %%a -i %%a_tmp.png -filter_complex paletteuse -y %%a_min.png && del %%a_tmp.png

nico-lab / pipe_gif_anime.bat

Last active October 11, 2015 13:21

ffmpeg でフレーム数を指定してアニメGIFを作る

	echo off
	set FFMPEG="H:\ffmpeg.exe"
	set GIFSICLE="H:\gifsicle.exe"

	%FFMPEG% -i %1 -filter_complex scale=320:-1,trim=start_frame=%2:end_frame=%3,palettegen -y %1_tmp.png
	%FFMPEG% -i %1 -i %1_tmp.png -filter_complex scale=320:-1,unsharp=3:3:0.5,trim=start_frame=%2:end_frame=%3,paletteuse -f gif - \| %GIFSICLE% -V -U -O3 - -o %1_opt.gif
	del %1_tmp.png

	pause

nico-lab / nicolive_alerts.php

Last active August 29, 2015 14:20

ニコ生アラートコメントサーバ接続する

nico-lab / opencv cmake

Last active April 15, 2019 11:10

ffmpeg で使う opencv をコンパイルする

	$ git clone https://github.com/opencv/opencv
	$ cd opencv
	$ mkdir build
	$ cd build
	$ cmake -G "MSYS Makefiles" .. -DCMAKE_INSTALL_PREFIX=/mingw/i686-w64-mingw32 -DCMAKE_BUILD_TYPE="Release" \
	-DWITH_IPP=OFF -DWITH_TBB=ON -DBUILD_opencv_flann=OFF -DBUILD_opencv_photo=OFF -DBUILD_opencv_highgui=OFF\
	-DBUILD_opencv_ml=OFF -DBUILD_opencv_objdetect=OFF -DBUILD_opencv_video=OFF -DBUILD_opencv_imgcodecs=OFF
	$ make && make install

nico-lab / opencv.pc

Last active February 22, 2017 11:22

ffmpeg 用の opencv.pc

	prefix=/mingw/i686-w64-mingw32
	exec_prefix=${prefix}
	libdir=${exec_prefix}/lib
	includedir_old=${prefix}/include/opencv
	includedir_new=${prefix}/include

	Name: OpenCV
	Description: Open Source Computer Vision Library
	Version: 2.4.13.2
	Libs: ${exec_prefix}/lib/libopencv_core2413.dll ${exec_prefix}/lib/libopencv_imgproc2413.dll

nico-lab / swf

Created June 18, 2015 15:10

swfファイルの投稿はできなくなりました

	<?xml version="1.0" encoding="utf-8"?>
	<response>
	<error>
	<code>PARAMERROR</code>
	<description>swfファイルの投稿はできなくなりました: http://blog.nicovideo.jp/niconews/ni053541.html</description>
	</error>
	<status>fail</status>
	</response>

nico-lab / ffmpeg で指定した場所にフィルタを当てる

Last active December 25, 2019 11:59

ffmpeg で指定した場所にフィルタを当てる

	ffplay -f lavfi -i smptebars \
	-vf "split[0][1];[0]colorkey=0x00bc00,\
	lutrgb=val:val:val:if(val\,0\,1)*255,noise=alls=80:allf=t+u[0a];[1][0a]overlay"

	ffmpeg -f lavfi -i smptebars \
	-vf "split[0][1];[0]colorkey=0x00bc00,\
	lutrgb=val:val:val:if(val\,0\,1)*255,noise=alls=80:allf=t+u[0a];\
	[1][0a]overlay=format=rgb" -vframes 1 0x00bc00.png

nico-lab / ffmpeg で指定した場所以外にフィルタを当てる

Last active December 25, 2019 09:09

ffmpeg で指定した場所以外にフィルタを当てる

	ffplay -f lavfi -i smptebars \
	-vf "split[0][1];[0]colorkey=0x00bc00,\
	lutrgb=val:val:val:if(val\,0\,1)*255[0a];[1]noise=alls=80:allf=t+u[1a];[1a][0a]overlay"

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