opencv VideoWriter for Java在MacOS上无法正常工作
在试图解决问题的时候 我发现了以下相关链接：opencv VideoWriter for Java在MacOS上无法正常工作,java,opencv,Java,Opencv,在试图解决问题的时候 我发现了以下相关链接： 然后提出了尝试扩展和FOURCC代码组合的方法 该环境是使用Java 8和Macports 2.6.2的Mac Os 10.13.6。使用OpenCV 3.4.8 我还使用OpenJDK1.8.0_232和libopencv_java343.so在Ubuntu18.04 LTS上进行了测试 消息和文件显示，我尝试的21种组合都不起作用 要使录像正常工作，有什么问题和解决方案？ 产生的信息包括： recording: 640x480 mo
recording: 640x480 mov video with MJPG
OpenCV: FFMPEG: tag 0x47504a4d/'MJPG' is not supported with codec id 7 and format 'mov / QuickTime / MOV'
OpenCV: FFMPEG: fallback to use tag 0x6765706a/'jpeg'
recording: 640x480 mov video with X264
OpenCV: FFMPEG: tag 0x34363258/'X264' is not supported with codec id 27 and format 'mov / QuickTime / MOV'
OpenCV: FFMPEG: fallback to use tag 0x31637661/'avc1'
recording: 640x480 mov video with H264
OpenCV: FFMPEG: tag 0x34363248/'H264' is not supported with codec id 27 and format 'mov / QuickTime / MOV'
OpenCV: FFMPEG: fallback to use tag 0x31637661/'avc1'
recording: 640x480 mov video with MP4V
OpenCV: FFMPEG: tag 0x5634504d/'MP4V' is not supported with codec id 12 and format 'mov / QuickTime / MOV'
OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v'
recording: 640x480 mov video with AVC1
OpenCV: FFMPEG: tag 0x31435641/'AVC1' is not supported with codec id 27 and format 'mov / QuickTime / MOV'
OpenCV: FFMPEG: fallback to use tag 0x31637661/'avc1'
recording: 640x480 mov video with FMP4
OpenCV: FFMPEG: tag 0x34504d46/'FMP4' is not supported with codec id 12 and format 'mov / QuickTime / MOV'
OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v'
recording: 640x480 mov video with JPEG
OpenCV: FFMPEG: tag 0x4745504a/'JPEG' is not supported with codec id 7 and format 'mov / QuickTime / MOV'
OpenCV: FFMPEG: fallback to use tag 0x6765706a/'jpeg'
recording: 640x480 avi video with MJPG
recording: 640x480 avi video with X264
recording: 640x480 avi video with H264
recording: 640x480 avi video with MP4V
OpenCV: FFMPEG: tag 0x5634504d/'MP4V' is not supported with codec id 12 and format 'avi / AVI (Audio Video Interleaved)'
OpenCV: FFMPEG: fallback to use tag 0x34504d46/'FMP4'
recording: 640x480 avi video with AVC1
OpenCV: FFMPEG: tag 0x31435641/'AVC1' is not supported with codec id 27 and format 'avi / AVI (Audio Video Interleaved)'
OpenCV: FFMPEG: fallback to use tag 0x34363248/'H264'
recording: 640x480 avi video with FMP4
recording: 640x480 avi video with JPEG
OpenCV: FFMPEG: tag 0x4745504a/'JPEG' is not supported with codec id 7 and format 'avi / AVI (Audio Video Interleaved)'
OpenCV: FFMPEG: fallback to use tag 0x47504a4d/'MJPG'
recording: 640x480 mpg video with MJPG
OpenCV: FFMPEG: tag 0x47504a4d/'MJPG' is not supported with codec id 7 and format 'mpeg / MPEG-1 Systems / MPEG program stream'
recording: 640x480 mpg video with X264
OpenCV: FFMPEG: tag 0x34363258/'X264' is not supported with codec id 27 and format 'mpeg / MPEG-1 Systems / MPEG program stream'
recording: 640x480 mpg video with H264
OpenCV: FFMPEG: tag 0x34363248/'H264' is not supported with codec id 27 and format 'mpeg / MPEG-1 Systems / MPEG program stream'
recording: 640x480 mpg video with MP4V
OpenCV: FFMPEG: tag 0x5634504d/'MP4V' is not supported with codec id 12 and format 'mpeg / MPEG-1 Systems / MPEG program stream'
recording: 640x480 mpg video with AVC1
OpenCV: FFMPEG: tag 0x31435641/'AVC1' is not supported with codec id 27 and format 'mpeg / MPEG-1 Systems / MPEG program stream'
recording: 640x480 mpg video with FMP4
OpenCV: FFMPEG: tag 0x34504d46/'FMP4' is not supported with codec id 12 and format 'mpeg / MPEG-1 Systems / MPEG program stream'
recording: 640x480 mpg video with JPEG
OpenCV: FFMPEG: tag 0x4745504a/'JPEG' is not supported with codec id 7 and format 'mpeg / MPEG-1 Systems / MPEG program stream'
-rw-r--r-- 1 wf 5686 9. Jan 10:19 test_AVC1_2020-01-09101907.avi
-rw-r--r-- 1 wf 185 9. Jan 10:19 test_AVC1_2020-01-09101907.mov
-rw-r--r-- 1 wf 0 9. Jan 10:19 test_AVC1_2020-01-09101907.mpg
-rw-r--r-- 1 wf 5686 9. Jan 10:19 test_FMP4_2020-01-09101907.avi
-rw-r--r-- 1 wf 185 9. Jan 10:19 test_FMP4_2020-01-09101907.mov
-rw-r--r-- 1 wf 0 9. Jan 10:19 test_FMP4_2020-01-09101907.mpg
-rw-r--r-- 1 wf 5686 9. Jan 10:19 test_H264_2020-01-09101907.avi
-rw-r--r-- 1 wf 185 9. Jan 10:19 test_H264_2020-01-09101907.mov
-rw-r--r-- 1 wf 0 9. Jan 10:19 test_H264_2020-01-09101907.mpg
-rw-r--r-- 1 wf 5686 9. Jan 10:19 test_JPEG_2020-01-09101907.avi
-rw-r--r-- 1 wf 185 9. Jan 10:19 test_JPEG_2020-01-09101907.mov
-rw-r--r-- 1 wf 0 9. Jan 10:19 test_JPEG_2020-01-09101907.mpg
-rw-r--r-- 1 wf 5686 9. Jan 10:19 test_MJPG_2020-01-09101907.avi
-rw-r--r-- 1 wf 185 9. Jan 10:19 test_MJPG_2020-01-09101907.mov
-rw-r--r-- 1 wf 0 9. Jan 10:19 test_MJPG_2020-01-09101907.mpg
-rw-r--r-- 1 wf 5686 9. Jan 10:19 test_MP4V_2020-01-09101907.avi
-rw-r--r-- 1 wf 185 9. Jan 10:19 test_MP4V_2020-01-09101907.mov
-rw-r--r-- 1 wf 0 9. Jan 10:19 test_MP4V_2020-01-09101907.mpg
-rw-r--r-- 1 wf 5686 9. Jan 10:19 test_X264_2020-01-09101907.avi
-rw-r--r-- 1 wf 185 9. Jan 10:19 test_X264_2020-01-09101907.mov
-rw-r--r-- 1 wf 0 9. Jan 10:19 test_X264_2020-01-09101907.mpg
包nl.vaneijndhoven.dukes.imageview；
导入静态org.junit.Assert.assertTrue；
导入java.io.File；
导入org.junit.BeforeClass；
导入org.junit.Test；
导入org.opencv.core.Mat；
导入org.opencv.core.Size；
导入com.bitplan.opencv.nativellibrary；
导入nl.vaneijndhoven.opencv.video.ImageUtils；
/**
*测试视频录制功能
*
*@author wf
*
*/
公共类测试录像机{
@课前
public static void setup（）引发异常{
NativeLibrary.load（）；
}
@试验
公共录像机（）{
字节[]testImage=DebugImageServer.testImage（）；
Mat testMat=ImageUtils.imageBytes2Mat（testImage）；
布尔值isColor=true；
for（字符串ext:VideoRecorder.exts）{
用于（字符串FOURCC:VideoRecorder.FOURCCs）{
Size frameSize=新尺寸（testMat.width（），testMat.height（））；
录像机=新录像机（“测试”，iColor）；
recorder.ext=ext；
记录器。FOURCC=FOURCC；
String msg=String.format（“录制：%dx%d%s与%s的视频”，
testMat.width（）、testMat.height（）、ext、FOURCC）；
System.out.println（msg）；
记录器。启动（25.0，帧大小）；
对于（int i=1；i而言，问题在于测试图像是具有4个通道的PNG图像
修正了这种情况：
确保我们使用jpg：
DebugImageServer.ext=“.jpg”；
显示使用的通道数：
String msg=String.format（“录制：%dx%d%d频道%s视频和%s”，
testMat.width（）、testMat.height（）、testMat.channels（）、ext、FOURCC）；
System.out.println（msg）；
现在有很多组合都起作用了：
-rw-r--r-- 1 wf 81845 9. Jan 11:05 test_avc1_2020-01-09110505.mov
-rw-r--r-- 1 wf 87402 9. Jan 11:05 test_avc1_2020-01-09110506.avi
-rw-r--r-- 1 wf 81920 9. Jan 11:05 test_avc1_2020-01-09110507.mpg
-rw-r--r-- 1 wf 389053 9. Jan 11:05 test_fmp4_2020-01-09110505.mov
-rw-r--r-- 1 wf 395162 9. Jan 11:05 test_fmp4_2020-01-09110506.avi
-rw-r--r-- 1 wf 391168 9. Jan 11:05 test_fmp4_2020-01-09110507.mpg
-rw-r--r-- 1 wf 81845 9. Jan 11:05 test_h264_2020-01-09110506.mov
-rw-r--r-- 1 wf 87402 9. Jan 11:05 test_h264_2020-01-09110507.avi
-rw-r--r-- 1 wf 81920 9. Jan 11:05 test_h264_2020-01-09110508.mpg
-rw-r--r-- 1 wf 3618564 9. Jan 11:05 test_jpeg_2020-01-09110506.mov
-rw-r--r-- 1 wf 3624510 9. Jan 11:05 test_jpeg_2020-01-09110507.avi
-rw-r--r-- 1 wf 3631104 9. Jan 11:05 test_jpeg_2020-01-09110508.mpg
-rw-r--r-- 1 wf 3618564 9. Jan 11:05 test_mjpg_2020-01-09110506.mov
-rw-r--r-- 1 wf 3624510 9. Jan 11:05 test_mjpg_2020-01-09110507.avi
-rw-r--r-- 1 wf 3631104 9. Jan 11:05 test_mjpg_2020-01-09110508.mpg
-rw-r--r-- 1 wf 389053 9. Jan 11:05 test_mp4v_2020-01-09110506.mov
-rw-r--r-- 1 wf 395162 9. Jan 11:05 test_mp4v_2020-01-09110507.avi
-rw-r--r-- 1 wf 391168 9. Jan 11:05 test_mp4v_2020-01-09110508.mpg
-rw-r--r-- 1 wf 81845 9. Jan 11:05 test_x264_2020-01-09110506.mov
-rw-r--r-- 1 wf 87402 9. Jan 11:05 test_x264_2020-01-09110507.avi
-rw-r--r-- 1 wf 81920 9. Jan 11:05 test_x264_2020-01-09110508.mpg
-rw-r--r-- 1 wf 389053 9. Jan 11:05 test_xvid_2020-01-09110506.mov
-rw-r--r-- 1 wf 395162 9. Jan 11:05 test_xvid_2020-01-09110507.avi
-rw-r--r-- 1 wf 391168 9. Jan 11:05 test_xvid_2020-01-09110508.mpg