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Autres articles (37)
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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 (...) -
Participer à sa documentation
10 avril 2011La documentation est un des travaux les plus importants et les plus contraignants lors de la réalisation d’un outil technique.
Tout apport extérieur à ce sujet est primordial : la critique de l’existant ; la participation à la rédaction d’articles orientés : utilisateur (administrateur de MediaSPIP ou simplement producteur de contenu) ; développeur ; la création de screencasts d’explication ; la traduction de la documentation dans une nouvelle langue ;
Pour ce faire, vous pouvez vous inscrire sur (...) -
Encodage et transformation en formats lisibles sur Internet
10 avril 2011MediaSPIP transforme et ré-encode les documents mis en ligne afin de les rendre lisibles sur Internet et automatiquement utilisables sans intervention du créateur de contenu.
Les vidéos sont automatiquement encodées dans les formats supportés par HTML5 : MP4, Ogv et WebM. La version "MP4" est également utilisée pour le lecteur flash de secours nécessaire aux anciens navigateurs.
Les documents audios sont également ré-encodés dans les deux formats utilisables par HTML5 :MP3 et Ogg. La version "MP3" (...)
Sur d’autres sites (5958)
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ffmpeg works at command line but I got this error when I use it in nodejs app :
15 avril 2023, par Ibrahim AshourThis is the code :


import fs from 'fs';
import googleTTS from 'google-tts-api';
import https from 'https';
import { exec } from 'child_process';

async function convertTextToVoice(text, fileName) {
 const outputFile = `./audios/${fileName}.mp3`;

 const words = text.split(' ');
 const chunks = [];
 let chunk = '';

 for (const word of words) {
 if (chunk.length + word.length < 200) {
 chunk += ' ' + word;
 } else {
 chunks.push(chunk.trim());
 chunk = word;
 }
 }

 chunks.push(chunk.trim());

 for (let i = 0; i < chunks.length; i++) {
 const chunkFile = `./audios/${fileName}-chunk${i}.mp3`;
 const url = await googleTTS.getAudioUrl(chunks[i], {
 lang: 'ar',
 slow: false,
 host: 'https://translate.google.com',
 });


 try {
 const file = await fs.createWriteStream(chunkFile);
 https.get(url, response => {
 response.pipe(file);
 file.on('finish', () => {
 file.close();
 console.log(`Chunk ${i} created successfully`);
 });
 }).on('error', error => {
 console.error(`Error downloading chunk ${i}: ${error}`);
 });
 } catch (error) {
 console.error(error);
 }
 }

 const chunkFiles = chunks.map((chunk, i) => `./audios/${fileName}-chunk${i}.mp3`);

 // Use ffmpeg to merge the audio files
 const concatCommand = `ffmpeg -i "concat:${chunkFiles.join('|')}" -acodec copy ${outputFile}`;
 try {
 await new Promise((resolve, reject) => {
 exec(concatCommand, (error, stdout, stderr) => {
 if (error) {
 console.error(`Error executing ffmpeg command: ${error}`);
 reject(error);
 } else {
 console.log(`Audio file ${outputFile} created successfully`);
 resolve();
 }
 });
 });

 for (const chunkFile of chunkFiles) {
 await fs.promises.unlink(chunkFile);
 console.log(`${chunkFile} deleted successfully`);
 }
 } catch (error) {
 console.error(error);
 }
}



This is the Error :
./audios/تجربة-chunk0.mp3|./audios/تجربة-chunk1.mp3
ffmpeg -i "concat :./audios/تجربة-chunk0.mp3|./audios/تجربة-chunk1.mp3" -acodec copy ./audios/تجربة.mp3
Error executing ffmpeg command : Error : Command failed : ffmpeg -i "concat :./audios/تجربة-chunk0.mp3|./audios/تجربة-chunk1.mp3" -acodec copy ./audios/تجربة.mp3
ffmpeg version 2023-02-04-git-bdc76f467f-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-bzlib —enable-lzma —enable-libsnappy —enable-zlib —enable-librist —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libaribb24 —enable-libdav1d —enable-libdavs2 —enable-libuavs3d —enable-libzvbi —enable-librav1e —enable-libsvtav1 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxavs2 —enable-libxvid —enable-libaom —enable-libjxl —enable-libopenjpeg —enable-libvpx —enable-mediafoundation —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-liblensfun —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libvpl —enable-libshaderc —enable-vulkan —enable-libplacebo —enable-opencl —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint
libavutil 57. 44.100 / 57. 44.100
libavcodec 59. 63.100 / 59. 63.100
libavformat 59. 38.100 / 59. 38.100
libavdevice 59. 8.101 / 59. 8.101
libavfilter 8. 56.100 / 8. 56.100
libswscale 6. 8.112 / 6. 8.112
libswresample 4. 9.100 / 4. 9.100
libpostproc 56. 7.100 / 56. 7.100
[mp3 @ 00000177df48a1c0] Format mp3 detected only with low score of 1, misdetection possible !
[mp3 @ 00000177df48a1c0] Failed to read frame size : Could not seek to 1026.
concat :./audios/تجربة-chunk0.mp3|./audios/تجربة-chunk1.mp3 : Invalid argument


Error : Command failed : ffmpeg -i "concat :./audios/تجربة-chunk0.mp3|./audios/تجربة-chunk1.mp3" -acodec copy ./audios/تجربة.mp3
ffmpeg version 2023-02-04-git-bdc76f467f-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-bzlib —enable-lzma —enable-libsnappy —enable-zlib —enable-librist —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libaribb24 —enable-libdav1d —enable-libdavs2 —enable-libuavs3d —enable-libzvbi —enable-librav1e —enable-libsvtav1 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxavs2 —enable-libxvid —enable-libaom —enable-libjxl —enable-libopenjpeg —enable-libvpx —enable-mediafoundation —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-liblensfun —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libvpl —enable-libshaderc —enable-vulkan —enable-libplacebo —enable-opencl —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint
libavutil 57. 44.100 / 57. 44.100
libavcodec 59. 63.100 / 59. 63.100
libavformat 59. 38.100 / 59. 38.100
libavdevice 59. 8.101 / 59. 8.101
libavfilter 8. 56.100 / 8. 56.100
libswscale 6. 8.112 / 6. 8.112
libswresample 4. 9.100 / 4. 9.100
libpostproc 56. 7.100 / 56. 7.100
[mp3 @ 00000177df48a1c0] Format mp3 detected only with low score of 1, misdetection possible !
[mp3 @ 00000177df48a1c0] Failed to read frame size : Could not seek to 1026.
concat :./audios/تجربة-chunk0.mp3|./audios/تجربة-chunk1.mp3 : Invalid argument


at ChildProcess.exithandler (node:child_process:419:12)
at ChildProcess.emit (node:events:513:28)
at maybeClose (node:internal/child_process:1091:16)
at ChildProcess._handle.onexit (node:internal/child_process:302:5) {



code : 1,
killed : false,
signal : null,
cmd : 'ffmpeg -i "concat :./audios/تجربة-chunk0.mp3|./audios/تجربة-chunk1.mp3" -acodec copy ./audios/تجربة.mp3'
}
Chunk 1 created successfully
Chunk 0 created successfully


I expected the command to work in the nodejs app like in the command line


-
Grabbing a single image from a MS VS .NET 6.0 C# WPF process always returns the same image
12 mai 2023, par Wolfgang KurzI am trying to develop a MS VS .NET 6.0 C# WPF application to digitize my Super 8 cine films. To grab the frames of the film I want to use FFMPEG because Accord.NET6.0 DirectShow does not work under MS VS 2022 .
I use
FFmpeg 64-bit static Windows build from www.gyan.dev
Version : 2022-09-29-git-8089fe072e-full_build-www.gyan.dev


FFMPEG is invoked from a Process in ma application whicch sets the process FFMPEG start parameters. The webcam parameter is "USB Webcam" ( digital Celestron handheld microscope connected via USB - is DirectShow compatible )
The video resolution parameter "camRes" is "1280x960"


public void UpdateImage(string aString)
 {
 string startPath = "C:" + MainWindow.bSl + "ffmpeg" + MainWindow.bSl + "bin" + MainWindow.bSl + "ffmpeg.exe ";

 MainWindow.aResult = "";
 System.Drawing.Bitmap result;
 ProcessStartInfo psi;
 psi = new ProcessStartInfo();
 psi.FileName = startPath;
 string targPath;
 psi.Arguments = "-f dshow -video_size" + MainWindow.dQuote + webCam + MainWindow.dQuote +
 " -framerate 10 -i video=" + MainWindow.dQuote + camRes + MainWindow.dQuote +
 " -frames:v 1 test%3d.bmp -update 1";
 string errors = "";
 string results = "";
 psi.CreateNoWindow = false;
 psi.RedirectStandardOutput = true;
 psi.RedirectStandardError = true;
 psi.WindowStyle = ProcessWindowStyle.Normal;
 psi.WorkingDirectory = "C:" + MainWindow.bSl + "ffmpeg" + MainWindow.bSl + "bin" + MainWindow.bSl;

 using (Process theProcess = new Process())
 {
 theProcess.StartInfo = psi;
 theProcess.Start();

 theProcess.WaitForExit();
 while (theProcess.HasExited == false)
 {
 Thread.Sleep(50);
 }
 Thread.Sleep(50);

 try
 {
 if (File.Exists(pathCI) == true)
 {
 DefineImage.ffmpegRes = new Bitmap(pathCI);
 MainWindow.actMWInstance.UpdateMessage(DateTime.Now +
 "- Old image disposed, new image grabbed");
 File.Delete(pathCI);
 }
 }
 catch (System.Exception ex)
 {
 MainWindow.actMWInstance.UpdateMessage(DateTime.Now + "Image grabbing failed");
 }
 theProcess.Close();
 theProcess.Dispose();
 }

 if (aString.Length == 0)
 {
 File.Delete(pathCI);
 MainWindow.actMWInstance.DoMove("200", "0", true);
 }
 if (ffmpegRes != null)
 {
 BitmapSource aBMPSrc = BitmapConversion.ToWpfBitmap(ffmpegRes);
 IMGFrame.Source = aBMPSrc;
 }
 Show();
 }



The attached screenshot shows the expected GUI content.
https://www.wkurz.com/wkurz/images/FFMPEGTEST.jpg


My problem now is, when I try to refresh the image in the
DefineDialog
window, I always get the same image although the film has been moved by one frame.

Is the first image cached by FFMPEG and always used again with the provided parameters.


How to force FFMPEG to replace the image with a new one.



-----------------------------------------------------------------------+this is additional information to the question.
I have managed to grab the film frame but still get always the same image during a session :*




It is obvious that the cine film frame has been successfully grabbbed.
The next step should be to work at the image ( correct brightness contrast, gama and colors) and then store the evaluated correction values that have later to be applied to the frames during a batch process, which automatically transports the film, grabs the frames and corrects the colors and then stores the frames as consecutively numbered images which than can be used to generate a video with FFMPEG :


Now the problem I cannot overcome :


In the definition dialog there are 2 buttons ( Refresh and New Image). The intension is to reread / regrab a frame, if the current frame is not optimal to evaluate the correction values.


Whenever I click one of the buttons FFMPEG seems to grab an image, but FFMPEG provides always the same (identcial to the first already available image) to the caller ( a .NET C# Process in my proggram).


The output stream is a single jpg image ( test%04d.jpg ) in a specified target library . Here follows the generated output which seem to be OK according to my knowledge.


I want to ask all interested persons to look over this provided information - may be someone has an idea, what causes the fact, that FFMPEG 6.0 van Neumann always delivers the first image grabbed. in a session.
It seems that there is something cached and reused over and over again.


DefImg 147: UpdateImage started ( Lines starting with DefImg or DefineImage are test output statements provided by the C# program)



DefineImage 155 11.05.2023 17:53:20 C :\ffmpeg\bin\ffmpeg.exe -y -nostdin -f dshow -an -video_size 1280x960 -framerate 10 -i video="USB Microscope" -filter:v "smartblur=luma_radius=0.9:luma_strength=0.7:luma_threshold=0" -frames:v 1 C :\FilmProjList\TEST\TEST%%04d.jpg -update 1
DefineImage 180 ffmpeg version 6.0-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-bzlib —enable-lzma —enable-libsnappy —enable-zlib —enable-librist —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libaribb24 —enable-libdav1d —enable-libdavs2 —enable-libuavs3d —enable-libzvbi —enable-librav1e —enable-libsvtav1 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxavs2 —enable-libxvid —enable-libaom —enable-libjxl —enable-libopenjpeg —enable-libvpx —enable-mediafoundation —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-liblensfun —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libvpl —enable-libshaderc —enable-vulkan —enable-libplacebo —enable-opencl —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint
libavutil 58. 2.100 / 58. 2.100
libavcodec 60. 3.100 / 60. 3.100
libavformat 60. 3.100 / 60. 3.100
libavdevice 60. 1.100 / 60. 1.100
libavfilter 9. 3.100 / 9. 3.100
libswscale 7. 1.100 / 7. 1.100
libswresample 4. 10.100 / 4. 10.100
libpostproc 57. 1.100 / 57. 1.100
Trailing option(s) found in the command : may be ignored.
Input #0, dshow, from 'video=USB Microscope' :
Duration : N/A, start : 5368.514437, bitrate : N/A
Stream #0:0 : Video : rawvideo (YUY2 / 0x32595559), yuyv422(tv, bt470bg/bt709/unknown), 1280x960, 10 fps, 10 tbr, 10000k tbn
Stream mapping :
Stream #0:0 -> #0:0 (rawvideo (native) -> mjpeg (native))
[swscaler @ 000001442fdcebc0] deprecated pixel format used, make sure you did set range correctly ( that I do not understand )
Last message repeated 3 times
[mjpeg @ 00000144278b0d80] removing common factors from framerate
Output #0, image2, to 'C :\FilmProjList\TEST\TEST%04d.jpg' :
Metadata :
encoder : Lavf60.3.100
Stream #0:0 : Video : mjpeg, yuvj422p(pc, bt470bg/bt709/unknown, progressive), 1280x960, q=2-31, 200 kb/s, 10 fps, 10 tbn
Metadata :
encoder : Lavc60.3.100 mjpeg
Side data :
cpb : bitrate max/min/avg : 0/0/200000 buffer size : 0 vbv_delay : N/A
frame= 0 fps=0.0 q=3.6 size= 0kB time=00:00:00.00 bitrate=N/A speed=N/A

frame= 1 fps=0.0 q=3.6 Lsize=N/A time=00:00:00.00 bitrate=N/A speed= 0x

video:45kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : unknown

DefineImage 248 11.05.2023 17:53:23 ( test output from, the C# program)
Das Programm "[11724] Cine2Video.exe" wurde mit Code 0 (0x0) beendet.




—


Mit freundlichen Grüßen / Best regards
Ute & Wolfgang Kurz
Domaine : https://uwkurz.de ; Homepage : https://www.uwkurz.de/home
Location : 9° 11' 27,75" East, 48° 43' 32,80" North
E-Mail : wolfgang@uwkurz.de , ute@uwkurz.de
Gesendet über Glasfaser von HOMENET.de




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