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The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (66)
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Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...) -
Configurer la prise en compte des langues
15 novembre 2010, parAccéder à la configuration et ajouter des langues prises en compte
Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...) -
XMP PHP
13 mai 2011, parDixit Wikipedia, XMP signifie :
Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...)
Sur d’autres sites (5422)
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How to improve Desktop capture performance and quality with ffmpeg [closed]
6 novembre 2024, par Francesco BramatoI'm developing a game capture feature from my Electron app. I'm working on this since a while and tried a lot of different parameters combinations, now i'm running out of ideas :)


I've read tons of ffmpeg documentation, SO posts, other sites, but i'm not really a ffmpeg expert or video editing pro.


This is how it works now :


The app spawn an ffmpeg command based on user's settings :


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- Output format (mp4, mkv, avi)
- Framerate (12, 24, 30, 60)
- Codec (X264, NVidia NVENC, AMD AMF)
- Bitrate (from 1000 to 10000kpbs)
- Presets (for X264)
- Audio output (a dshow device like StereoMix or VB-Cable) and Audio input (a dshow device like the Microphone)
- Final Resolution (720p, 1080p, 2K, Original Size)
















The command executed, as far, is :


ffmpeg.exe -nostats -hide_banner -hwaccel cuda -hwaccel_output_format cuda -f gdigrab -draw_mouse 0 -framerate 60 -offset_x 0 -offset_y 0 -video_size 2560x1440 -i desktop -f dshow -i audio=@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{D61FA53D-FA37-4BE7-BE2F-4005F94790BB} -ar 44100 -colorspace bt709 -color_trc bt709 -color_primaries bt709 -c:v h264_nvenc -b:v 6000k -preset slow -rc cbr -profile:v high -g 60 -acodec aac -maxrate 6000k -bufsize 12000k -pix_fmt yuv420p -f mpegts -


one of the settings is the recording mode : full game session or replay buffer.
In case of full game session, the output is a file, for replay buffer is stdout.


The output format is mpegts because, as far i have read in a lot of places, the video stream can be cut in any moment.


Replays are cutted with different past and future duration based on game events.


In full game session, the replays are cutted directly from the mpegts.


In replay buffer mode, the ffmpeg stdout is redirect to the app that record the buffer (1 or 2 minutes), when the replay must be created, the app saves on the disk the buffer section according to past and future duration and with another ffmpeg command, copy it to a mp4 or mkv final file.


Generally speaking, this works reliably.


There are few issues :


- 

- nonetheless i ask ffmpeg to capture at 60fps, the final result is at 30fps (using
-r 60will speed up the final result) - some user has reported FPS drops in-game, specially when using NVidia NVENC (and having a NVIDIA GPU), using X264 seems save some FPS
- colors are strange compared to original, what i see on screen, they seem washed out - i could have solved this using
-colorspace bt709 -color_trc bt709 -color_primaries bt709but don't know if is the right choice - NVIDIA NVenc with any other preset that is not
slowcreates videos terribly laggy










here two examples, 60 FPS, NVIDIA NVENC (slow, 6000kbs, MP4


Recorded by my app : https://www.youtube.com/watch?v=Msm62IwHdlk


Recorded by OB with nearly same settings : https://youtu.be/WuHoLh26W7E


Hope someone can help me


Thanks !


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How can I upscale a stereo signal using PLII on a VM
27 mars 2024, par andersmiI want to upscale a stereo signal with PLII from an input on a VM and sent it to an output after the upscale.


I am thinking of installing Voicemeeter/Virtual Audio Cable or something like that to get an input on the VM.
I will then be able to use Dante Via on the VM host to sent the audio to the VM input and receive it again from the VM output on Dante Via then send it to my amplifier.
The solution needs to be able to initialize itself after reboot.


I have looked into different solutions the most promissing seems to be FFDShow and FFMpeg, but there is not much information about how to do this. I don't care what is used just as long as it support PLII.


I am looking for information on how to use FFDShow/FFMpeg with an application I develop or any other way to solve this.


Thanks


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Process vide files to take screen grabs in java spring boot
10 octobre 2023, par Haleema KhanI am using JavaCV library with ffmpeg bindings to process video files and taking screen grabs at specific frames.
Adding JavaCV library dependency to my spring project increases the size of my jar file from around 90Mb > 1+ Gb.
This is a big issue becuase my project is deployed on AWS elastic beanstalk that accepts a max size of 500 Mb for a jar file.


Need help to resolve this issue with the jar file or else any other alternate library that could do this.


What I tried : I have removed all accept the abosultely necessary dependencies in my project to reduce the jar size.
I have also tried to find alternate solutions but couldnt get anything.
My pom file looks like


<dependencies>
 
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-data-jpa</artifactid>
 </dependency>
 <dependency>
 <groupid>com.google.oauth-client</groupid>
 <artifactid>google-oauth-client</artifactid>
 <version>1.32.1</version>
 </dependency>
 <dependency>
 <groupid>com.google.http-client</groupid>
 <artifactid>google-http-client</artifactid>
 <version>1.32.1</version>
 </dependency>
 
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-oauth2-client</artifactid>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-web</artifactid>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-test</artifactid>
 <scope>test</scope>
 </dependency>
 
 <dependency>
 <groupid>org.bytedeco</groupid>
 <artifactid>javacv</artifactid>
 <version>1.5.9</version>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-validation</artifactid>
 </dependency>
 <dependency>
 <groupid>org.apache.commons</groupid>
 <artifactid>commons-csv</artifactid>
 <version>1.10.0</version>
 </dependency>
 <dependency>
 <groupid>io.jsonwebtoken</groupid>
 <artifactid>jjwt</artifactid>
 <version>0.9.1</version>
 </dependency>
 
 <dependency>
 <groupid>mysql</groupid>
 <artifactid>mysql-connector-java</artifactid>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-devtools</artifactid>
 </dependency>
 <dependency>
 <groupid>org.projectlombok</groupid>
 <artifactid>lombok</artifactid>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-configuration-processor</artifactid>
 <optional>true</optional>
 </dependency>
 <dependency>
 <groupid>com.amazonaws</groupid>
 <artifactid>aws-java-sdk-s3</artifactid>
 <version>1.12.550</version>
 </dependency>
 
 <dependency>
 <groupid>commons-io</groupid>
 <artifactid>commons-io</artifactid>
 <version>2.6</version>
 </dependency>
 
 
 
 <dependency>
 <groupid>com.github.ozlerhakan</groupid>
 <artifactid>poiji</artifactid>
 <version>3.0.3</version>
 </dependency>
 <dependency>
 <groupid>org.springframework.cloud</groupid>
 <artifactid>spring-cloud-starter-aws</artifactid>
 <version>2.2.6.RELEASE</version>
 </dependency>
 <dependency>
 <groupid>org.springframework.cloud</groupid>
 <artifactid>spring-cloud-starter-aws-messaging</artifactid>
 <version>2.2.6.RELEASE</version>
 </dependency>
 </dependencies>```


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