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sarxos / webcam-capture

The goal of this project is to allow integrated or USB-connected webcams to be accessed directly from Java. Using provided libraries users are able to read camera images and detect motion. Main project consist of several sub projects - the root one, which contains required classes, build-in webcam driver compatible with Windows, Linux and Mac OS, which can stream images as fast as your camera can serve them (up to 50 FPS). Main project can be used standalone, but user is able to replace build-in driver with different one - such as OpenIMAJ, GStreamer, V4L4j, JMF, LTI-CIVIL, FMJ, etc.
http://webcam-capture.sarxos.pl
MIT License
2.27k stars 1.11k forks source link

Xuggler support #403

Closed mjoycemilburn closed 8 years ago

mjoycemilburn commented 8 years ago

I have been trying to get the "Capture video" example to run but have so far failed due to a series of problems with Xuggle.

I'm pretty new to this stuff so the problems may be of my own creation. An Ant build ran but failed with a "failed to encode video" problem. I wasn't confident that I'd got the library versions lined up properly so switched to Maven. This ran into problems even sooner as Netbeans couldn't build a Maven repository for Xuggle. According to a Netbeans forum response the repository URL that the Xuggle doc supplies (http://xuggle.googlecode.com/svn/trunk/repo/share/java/) has no index.

From what I can gather, Xuggle development has stopped. So I'm stuck unless I get a helpful response from the Xuggle forum.

Any suggestions? I'm trying top run this stuff under 64-bit WIndows 10.

Regards, MartinJ

sarxos commented 8 years ago

Hi @mjoycemilburn,

You are using correct repo URL. Maven repository may have, but does not need to have index. The index lists content available in a repository group, but it's not required because Maven always tries to load artifact defined in dependency and there is no need for it to index whole repo.

I'm not very familiar with NetBeans (I'm using Eclipse), but you should be able to create new Maven project (or import existing one) without having to build any repository.

This is the POM I'm using in examples. It works well from both command line and Eclipse IDE.

https://github.com/sarxos/webcam-capture/blob/master/webcam-capture-examples/webcam-capture-video-recording/pom.xml

Yes, Xuggler is down, so depending on your needs you may consider moving to JMF, trying JCodec or gstreamer-java.

mjoycemilburn commented 8 years ago

Many thanks, Sarxos. There's a steep learning curve on all this stuff and I'm still very much at the bottom of the slope.

The good new is that I've successfully run your motion-detection example and have now started modifying it to suit my needs - so a big thank-you for that.

Also, I've found a way /round/ my xuggler problem. I just wanted a clip to use as a baseline for a speed-monitoring application. I realised I'd got a package that came with my camera that would record an mpeg2 file, so I'm in business on that front. Now all I have to do is tinker with your code so that i read the video from my file instead of the camera - well it'll keep me busy for a few days, I expect.

I shan't give up with xuggle completely though. It seems the best library for the application and a real pity the authors couldn't make any money out of it. I've got a book coming to help me get my head round Maven a bit better - there's such a lot to learn and it's not very well-decribed on the web.

I've noted your advice and I'll get back to you if I find an answer.

Best wishes, MartinJ

On 23 October 2015 at 10:12, Bartosz Firyn notifications@github.com wrote:

Hi @mjoycemilburn https://github.com/mjoycemilburn,

You are using correct repo URL. Maven repository may have, but does not need to have index. The index lists content available in a repository group, but it's not required because Maven always tries to load artifact defined in dependency and there is no need for it to index whole repo.

I'm not very familiar with NetBeans (I'm using Eclipse), but you should be able to create new Maven project (or import existing one) without having to build any repository.

This is the POM I'm using in examples. It works well from both command line and Eclipse IDE.

https://github.com/sarxos/webcam-capture/blob/master/webcam-capture-examples/webcam-capture-video-recording/pom.xml

Yes, Xuggler is down, so depending on your needs you may consider moving to JMF http://www.oracle.com/technetwork/java/javase/download-142937.html, trying JCodec https://github.com/jcodec/jcodec or gstreamer-java https://github.com/gstreamer-java.

— Reply to this email directly or view it on GitHub https://github.com/sarxos/webcam-capture/issues/403#issuecomment-150524127 .

mjoycemilburn commented 8 years ago

Hi again Sarxos. Now that I've tried the alternatives I've come back to Webcam-camera and am determined to sort my Maven problems.

It seems that my problem with the Xuggler repository is a known deficiency in Netbeans (supposedly fixed but apparently not). However this may be a side issue as I see things a bit more clearly now and I think my build is actually failing for other reasons - I've switched to Eclipse and am still getting errors.

Right now I'm looking at an Eclipse error on your webcam-capture/webcam-capture-examples/webcam -video-recording/ pom where it says that line 6 has a "Project build error: Non-resolvable parent POM: Could not find artifact com.github.sarxos:webcam-capture-examples:pom:0.3.12-SNAPSHOT in xuggle repo (http://xuggle.googlecode.com/svn/trunk/repo/share/ java/) and 'parent.relativePath' points at wrong local POM".

I'm hoping this makes more sense to you than it does to me. My local repositories include an empty Workspace Projects/com/github/sarxos. My Central Repository has a com.github.sarxos with lots of jars but no webcam-capture-examples pom. I feel I must have missed a step somewhere.

Hoping you can help me.

Best wishes, Martin J

On 23 October 2015 at 12:14, Martin Joyce mjoycemilburn@gmail.com wrote:

Many thanks, Sarxos. There's a steep learning curve on all this stuff and I'm still very much at the bottom of the slope.

The good new is that I've successfully run your motion-detection example and have now started modifying it to suit my needs - so a big thank-you for that.

Also, I've found a way /round/ my xuggler problem. I just wanted a clip to use as a baseline for a speed-monitoring application. I realised I'd got a package that came with my camera that would record an mpeg2 file, so I'm in business on that front. Now all I have to do is tinker with your code so that i read the video from my file instead of the camera - well it'll keep me busy for a few days, I expect.

I shan't give up with xuggle completely though. It seems the best library for the application and a real pity the authors couldn't make any money out of it. I've got a book coming to help me get my head round Maven a bit better - there's such a lot to learn and it's not very well-decribed on the web.

I've noted your advice and I'll get back to you if I find an answer.

Best wishes, MartinJ

On 23 October 2015 at 10:12, Bartosz Firyn notifications@github.com wrote:

Hi @mjoycemilburn https://github.com/mjoycemilburn,

You are using correct repo URL. Maven repository may have, but does not need to have index. The index lists content available in a repository group, but it's not required because Maven always tries to load artifact defined in dependency and there is no need for it to index whole repo.

I'm not very familiar with NetBeans (I'm using Eclipse), but you should be able to create new Maven project (or import existing one) without having to build any repository.

This is the POM I'm using in examples. It works well from both command line and Eclipse IDE.

https://github.com/sarxos/webcam-capture/blob/master/webcam-capture-examples/webcam-capture-video-recording/pom.xml

Yes, Xuggler is down, so depending on your needs you may consider moving to JMF http://www.oracle.com/technetwork/java/javase/download-142937.html, trying JCodec https://github.com/jcodec/jcodec or gstreamer-java https://github.com/gstreamer-java.

— Reply to this email directly or view it on GitHub https://github.com/sarxos/webcam-capture/issues/403#issuecomment-150524127 .

mjoycemilburn commented 8 years ago

Follow-up. Just to note. I think there's a spelling mistake on line 12 of the webcam-capture-examples pom - missing n in webcam-capture-example-video-recordig.

Unfortunately, fixing this doesn't make my problem disappear .

Regards, MJ

On 1 November 2015 at 12:10, Martin Joyce mjoycemilburn@gmail.com wrote:

Hi again Sarxos. Now that I've tried the alternatives I've come back to Webcam-camera and am determined to sort my Maven problems.

It seems that my problem with the Xuggler repository is a known deficiency in Netbeans (supposedly fixed but apparently not). However this may be a side issue as I see things a bit more clearly now and I think my build is actually failing for other reasons - I've switched to Eclipse and am still getting errors.

Right now I'm looking at an Eclipse error on your webcam-capture/webcam-capture-examples/webcam -video-recording/ pom where it says that line 6 has a "Project build error: Non-resolvable parent POM: Could not find artifact com.github.sarxos:webcam-capture-examples:pom:0.3.12-SNAPSHOT in xuggle repo (http://xuggle.googlecode.com/svn/trunk/repo/share/ java/) and 'parent.relativePath' points at wrong local POM".

I'm hoping this makes more sense to you than it does to me. My local repositories include an empty Workspace Projects/com/github/sarxos. My Central Repository has a com.github.sarxos with lots of jars but no webcam-capture-examples pom. I feel I must have missed a step somewhere.

Hoping you can help me.

Best wishes, Martin J

On 23 October 2015 at 12:14, Martin Joyce mjoycemilburn@gmail.com wrote:

Many thanks, Sarxos. There's a steep learning curve on all this stuff and I'm still very much at the bottom of the slope.

The good new is that I've successfully run your motion-detection example and have now started modifying it to suit my needs - so a big thank-you for that.

Also, I've found a way /round/ my xuggler problem. I just wanted a clip to use as a baseline for a speed-monitoring application. I realised I'd got a package that came with my camera that would record an mpeg2 file, so I'm in business on that front. Now all I have to do is tinker with your code so that i read the video from my file instead of the camera - well it'll keep me busy for a few days, I expect.

I shan't give up with xuggle completely though. It seems the best library for the application and a real pity the authors couldn't make any money out of it. I've got a book coming to help me get my head round Maven a bit better - there's such a lot to learn and it's not very well-decribed on the web.

I've noted your advice and I'll get back to you if I find an answer.

Best wishes, MartinJ

On 23 October 2015 at 10:12, Bartosz Firyn notifications@github.com wrote:

Hi @mjoycemilburn https://github.com/mjoycemilburn,

You are using correct repo URL. Maven repository may have, but does not need to have index. The index lists content available in a repository group, but it's not required because Maven always tries to load artifact defined in dependency and there is no need for it to index whole repo.

I'm not very familiar with NetBeans (I'm using Eclipse), but you should be able to create new Maven project (or import existing one) without having to build any repository.

This is the POM I'm using in examples. It works well from both command line and Eclipse IDE.

https://github.com/sarxos/webcam-capture/blob/master/webcam-capture-examples/webcam-capture-video-recording/pom.xml

Yes, Xuggler is down, so depending on your needs you may consider moving to JMF http://www.oracle.com/technetwork/java/javase/download-142937.html, trying JCodec https://github.com/jcodec/jcodec or gstreamer-java https://github.com/gstreamer-java.

— Reply to this email directly or view it on GitHub https://github.com/sarxos/webcam-capture/issues/403#issuecomment-150524127 .

sarxos commented 8 years ago

Hi @mjoycemilburn,

I designed Webcam Capture API Maven modularity in such a ways that all examples are integrated part of the whole project, but it may be hard to unlink them if someone is unfamiliar with Maven. The best way to work with them is to import all Maven projects (modules), but if you are looking for a ready to use, standalone POM that does not depend on any parent project or SNAPSHOT version, here it is:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.github.mjoycemilburn</groupId>
    <artifactId>webcam-capture-example-video-recordig</artifactId>
    <version>1.0</version>
    <packaging>jar</packaging>
    <name>Webcam Capture - Video Recording Example</name>
    <description>Example how to record h264 video with awesome Xuggler library</description>
    <repositories>
        <repository>
            <id>xuggle repo</id>
            <url>http://xuggle.googlecode.com/svn/trunk/repo/share/java/</url>
        </repository>
    </repositories>
    <dependencies>
        <dependency>
            <groupId>com.github.sarxos</groupId>
            <artifactId>webcam-capture</artifactId>
            <version>0.3.11</version>
        </dependency>
        <dependency>
            <groupId>xuggle</groupId>
            <artifactId>xuggle-xuggler</artifactId>
            <version>5.4</version>
        </dependency>
    </dependencies>
</project>

But in generally, to unlink project (module) from parent:

I tested it on my Ubuntu laptop and it works well generating output.ts file that I can open properly in VLC.

mjoycemilburn commented 8 years ago

Many thanks Bartosz - that works a treat. Another donation to your site is indicated.

​​However, I'm still trying to work out the implications of what you've told me.

I think I see that the problem with my Build was that the pom for com.github.sarxos:webcam-capture-examples:0.3.12-SNAPSHOT wasn't in my local repository. I can just about infer from what you told me that this is something to do with the "modules" entries in webcam-capture-examples.pom and that this could be fixed by downloading more code. But here's my question. Surely the whole point of Maven is to automate the Build process and remove any need for "prepping" the project content?

I've got a wet towel round my head at present while I read "Introducing Maven" (which I regretfully note doesn't get as far as "modules") and maybe I'll eventually be able to answer my question for myself.

In the meantime, however, my project works and I can move forward again. Also I don't have the problems I experienced with a failed attempt to use OpenIMAJ, where the code wouldn't release the camera without me rebooting my PC and where there is /no/ support. You might be interested to note, however, that I had difficulties in both Webcam-Capture and OPenIMAJ with buffer under-runs when trying to write an mpg file (I'm on Windows 10). Switching to mp4 fixed this completely in Webcam-Capture.

Best wishes,

Martin J

On 2 November 2015 at 12:07, Bartosz Firyn notifications@github.com wrote:

Hi @mjoycemilburn https://github.com/mjoycemilburn,

I designed Webcam Capture API Maven modularity in such a ways that all examples are integrated part of the whole project, but it may be hard to unlink them if someone is unfamiliar with Maven. The best way to work with examples is to import all Maven projects (modules), but if you are looking for a ready to use, standalone POM that does not depend on any parent project or SNAPSHOT version, here it is:

4.0.0 com.github.mjoycemilburn webcam-capture-example-video-recordig 1.0 jar Webcam Capture - Video Recording Example Example how to record h264 video with awesome Xuggler library xuggle repo http://xuggle.googlecode.com/svn/trunk/repo/share/java/ com.github.sarxos webcam-capture 0.3.11 xuggle xuggle-xuggler 5.4

But in generally, to unlink project (module) from parent:

  • remove ,
  • specify your own and ,
  • use fixed version in dependency instead of ${project.version} (the last stable is 0.3.11).

I tested it on my Ubuntu laptop and it works well generating output.ts file that I can open properly in VLC http://www.videolan.org/vlc/.

— Reply to this email directly or view it on GitHub https://github.com/sarxos/webcam-capture/issues/403#issuecomment-152999567 .

sarxos commented 8 years ago

Hi @mjoycemilburn,

Many thanks for the project donation :)

When you take a look into the webcam-capture project root you may notice single pom.xml and some directories which are listen in pom in <modules> section. If you consider pom as a project, you can treat modules like a sub-projects. Webcam Capture API has many of them:

webcam-capture
├── webcam-capture
├── webcam-capture-addons
│   ├── webcam-capture-addon-spycam
│   └── webcam-capture-addon-swt
├── webcam-capture-drivers
│   ├── driver-ffmpeg-cli
│   ├── driver-fswebcam
│   ├── driver-gstreamer
│   ├── driver-ipcam
│   ├── driver-javacv
│   ├── driver-jmf
│   ├── driver-lti-civil
│   ├── driver-openimaj
│   ├── driver-v4l4j
│   ├── driver-vlcj
├── webcam-capture-examples
│   ├── webcam-capture-applet
│   ├── webcam-capture-detect-face
│   ├── webcam-capture-executable
│   ├── webcam-capture-javafx
│   ├── webcam-capture-javafx-fxml
│   ├── webcam-capture-live-streaming
│   ├── webcam-capture-manycams
│   ├── webcam-capture-motiondetector
│   ├── webcam-capture-onejar
│   ├── webcam-capture-painter
│   ├── webcam-capture-qrcode
│   ├── webcam-capture-swt-awt
│   ├── webcam-capture-transformer
│   ├── webcam-capture-video-recording
│   └── webcam-capture-websockets
└── webcam-capture-pages

When <parent> relationship is used, the child modules (projects) derive settings from the parent. This is really helpful, especially when the overall project structure grows in time, thus, many common settings can be put in a one place instead of keeping copies in every pom. Also, it's much easer to decouple dependencies and release:perform such structure into the Maven Central (less work has to be done because almost everything in such process can be automated). Maven very basics are pretty straightforward and easy to learn, but there are of course much more complex aspects like modules, thousands of different plugins, dependency management, inheritance, reporting, or plugin api (when you create your own maven plugins). The bigger your project is, the more subprojects you have, then, sooner or later you will find out that you need much more complex build management, and what I can tell is that Maven has never (8 years when I'm using it) disappointed me in this area - there is a bunch of plugins to cover almost every aspect of build process - from preparation, thru instrumentation, compilation, different kind of unit testing, various integration testing, reporting, packaging and release.

To clarify what are the implication of removing <parent> from this example pom. When you change the source code in webcam-capture-0.3.12-SNAPSHOT, and do mvn install (this install the build artifact in local repository) the change will not be visible in the project using webcam-capture-0.3.11, so if you want to play and hack the webcam-capture source code, it may be better to import complete project structure. But when it's enough to use stable version just stay with 0.3.11. This is the only implication. When new stable version is released, you just bump up 0.3.11 to 0.3.12 and voilla.

sarxos commented 8 years ago

Hi @mjoycemilburn,

Just FYI, I'm closing this ticket.

mjoycemilburn commented 8 years ago

Thanks Sarxos. I'm sorry I've not replied before.

Because my Ant builds don't show the instability (which, incidentally isn't as clear-cut as I indicated - it's now evident that re-boot doesn't always clear the timeout) there's obviously something wrong with my Maven builds. And because I can't exclude Netbeans from implication I'm now doing my builds from the Windows command window.

So - i've been slowly pulling myself up by my own bootstraps, as it were, and learning how to use Maven from the ground up. I've still to find a good primer so it's been a slow process. So far I've been testing on my laptop using the built-in camera. This has never shown the timeout problem so has enabled me to concentrate on just getting maven working properly. Today I switch to my desktop machine with an external USB camera and will start to tackle the problem directly.

I'll let you know how I get on.

Regards, MartinJ

On 17 November 2015 at 08:48, Bartosz Firyn notifications@github.com wrote:

Hi @mjoycemilburn https://github.com/mjoycemilburn,

Just FYI, I'm closing this ticket.

— Reply to this email directly or view it on GitHub https://github.com/sarxos/webcam-capture/issues/403#issuecomment-157310701 .

mjoycemilburn commented 8 years ago

Right - things are becoming clearer. It now seems the problem is nothing to do with Ant/Maven/Netbeans except insofar as the issues I was having with my builds were obscuring the problem.

It's now evident that,whether I build with Ant or Maven, an execution of the jar from the Windows command line on my Windows 7 machine regularly fails with a camera timeout. But, frustratingly, it sometimes works. Worse I can now no longer see any pattern to the failures (I previously thought a reboot cleared the problem but not so).

However, the big news is that when I run the jar produced on the Windows 7 machine on my Windows 10 laptop everything is fine - at least I've tried on numerous occasions now and it's worked every time. So it seems that the timeout may be due to a setup problem on my Windows 7 (64 bit) machine

I've updated the camera drivers here to the latest versions but that hasn't fixed things and the only other thing I can think of is to upgrade to Windows 10.

But that's a big job - and before I launch into it I wonder if you can tell me if /you're/ aware of any Windows 7 issues for webcam-capture?

Best wishes, MartinJ

On 17 November 2015 at 09:46, Martin Joyce mjoycemilburn@gmail.com wrote:

Thanks Sarxos. I'm sorry I've not replied before.

Because my Ant builds don't show the instability (which, incidentally isn't as clear-cut as I indicated - it's now evident that re-boot doesn't always clear the timeout) there's obviously something wrong with my Maven builds. And because I can't exclude Netbeans from implication I'm now doing my builds from the Windows command window.

So - i've been slowly pulling myself up by my own bootstraps, as it were, and learning how to use Maven from the ground up. I've still to find a good primer so it's been a slow process. So far I've been testing on my laptop using the built-in camera. This has never shown the timeout problem so has enabled me to concentrate on just getting maven working properly. Today I switch to my desktop machine with an external USB camera and will start to tackle the problem directly.

I'll let you know how I get on.

Regards, MartinJ

On 17 November 2015 at 08:48, Bartosz Firyn notifications@github.com wrote:

Hi @mjoycemilburn https://github.com/mjoycemilburn,

Just FYI, I'm closing this ticket.

— Reply to this email directly or view it on GitHub https://github.com/sarxos/webcam-capture/issues/403#issuecomment-157310701 .

sarxos commented 8 years ago

Hi @mjoycemilburn,

Nope, I'm not aware of any Windows 7 specific issues, but this issue seems very strange. Have you tried building on a different PC that is also working on Windows 10?

Also, please make sure you are using 64-bit Java on 64-bin OS, same with 32-bit.

Can you please try enabling debug logs, so we have some better insight in what is happening on a BridJ level.

https://github.com/sarxos/webcam-capture/wiki/How-To-Enable-Dubug-Logs

There will be a lot of stuff in the output, but maybe, just maybe, something may help dig the root cause and find out what the problem actually is (e.g. wrong lib loaded, capture format not supported, etc).

mjoycemilburn commented 8 years ago

​ ​Hi Sarxos - yes according to "java -d64 -version" I'm using 64 bit Java on my 64 bit Windows 7 machine.

Everything I've built​ ​so far using webcam-capture​ ​on my Windows 10 machine works. Conversely all of​ ​the​ ​webcam-capture builds on the Windows 7 machine show the instability.​ ​An OpenIMAJ build version of the playvideoexample on Windows7 ​ ​ is fine however.

The clincher for me is that the​ ​"jar-with-dependencies" for the playvideo example ​ ​ produced on the Windows7 machine works fine on the Windows 10 machine. So the instability has got to be something to do with a ​difference in ​the run-time environments - but something that's only triggered by webcam-capture.

This is weird when the OpenImaj build is fine and uses the same drivers as webcam-capture - right?

So, in the spirit of exploration and since I'm learning a lot through all this floundering, I've tried to add the debugging you advised.

I've been getting debug logging all along (that's why I know that the camera is timing out) but I'm not sure I've got it fully configured so followed your instructions

I put your logback.xml file alonside the pom.xml file in the program folder. ​ ​ I put the WebcamLogConfigurator call in the main class of the program. The logback core and classic jars are already in the project as run dependencies (they came in with xuggler and I presume this is why I've been getting logging ​ ​ ) but I added them to my classpath anyway to my classpath - which I assume is in directory target/classes)

However the debug output just looks the same as before - no [capture-1] DEBUG lines, anyway. Have I done something wrong or is this what you would expect?

Output from a run/file in Netbeans is shown below:

--- exec-maven-plugin:1.2.1:exec (default-cli) @ webcam-capture-play-video --- Getting default webcam 16:21:57.923 [main] INFO com.github.sarxos.webcam.Webcam - WebcamDefaultDriver capture driver will be used 16:21:57.932 [webcam-discovery-service] DEBUG c.g.s.w.d.b.WebcamDefaultDriver - Searching devices 16:21:58.476 [webcam-discovery-service] DEBUG c.g.s.w.d.b.WebcamDefaultDriver - Found device Conexant Polaris Video Capture 0 Opening webcam 16:21:58.481 [main] DEBUG com.github.sarxos.webcam.WebcamLock - Lock Webcam Conexant Polaris Video Capture 0 16:21:58.484 [atomic-processor-1] INFO c.g.s.webcam.ds.cgt.WebcamOpenTask - Opening webcam Conexant Polaris Video Capture 0 16:21:58.484 [atomic-processor-1] DEBUG c.g.s.w.d.b.WebcamDefaultDevice - Opening webcam device Conexant Polaris Video Capture 0 16:21:58.484 [atomic-processor-1] DEBUG c.g.s.w.d.b.WebcamDefaultDevice - Webcam device 0 starting session, size java.awt.Dimension[width=176,height=144] 16:21:58.694 [atomic-processor-1] DEBUG c.g.s.w.d.b.WebcamDefaultDevice - Webcam device session started 16:21:58.694 [atomic-processor-1] WARN c.g.s.w.d.b.WebcamDefaultDevice - Different size obtained vs requested

On 21 November 2015 at 11:00, Bartosz Firyn notifications@github.com wrote:

Hi @mjoycemilburn https://github.com/mjoycemilburn,

Nope, I'm not aware of any Windows 7 specific issues, but this issue seems very strange. Have you tried building on a different PC that is also working on Windows 10?

Also, please make sure you are using 64-bit Java on 64-bin OS, same with 32-bit.

Can you please try enabling debug logs, so we have some better insight in what is happening on a BridJ level.

https://github.com/sarxos/webcam-capture/wiki/How-To-Enable-Dubug-Logs

There will be a lot of stuff in the output, but maybe, just maybe, something may help dig the root cause and find out what the problem actually is (e.g. wrong lib loaded, capture format not supported, etc).

— Reply to this email directly or view it on GitHub https://github.com/sarxos/webcam-capture/issues/403#issuecomment-158628083 .