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Autres articles (52)
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Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (9221)
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FFmpeg Streaming Video SpringBoot endpoint not show video duration in video players
7 avril 2024, par lxluxo23it turns out that I've been working on a personal project just out of curiosity.
the main function is to stream video by first encoding it through ffmpeg
then playback said video from any other device
call it "plex" very very primitive


although I achieve my goal which is to encode and send the video to the devices that make the request
this video is sent so to speak as a live broadcast.
I can only pause it, no forward or rewind, anyone have any idea what I am doing wrong or if I should take some other approach either in my service or controller ?


I leave fragments of my code


THE CONTROLLER


@RestController
@RequestMapping("/api")
@Log4j2
public class StreamController {

 @Autowired
 VideoStreamingService videoStreamingService;

 @Autowired
 VideoService videoService;


 @GetMapping("/stream/{videoId}")
 public ResponseEntity<streamingresponsebody> livestream(@PathVariable Long videoId,@RequestParam(required = false) String codec) {
 Video video = videoService.findVideoById(videoId);
 if (video != null) {
 Codec codecEnum = Codec.fromString(codec);
 return ResponseEntity.ok()
 .contentType(MediaType.valueOf("video/mp4"))
 .body(outputStream -> videoStreamingService.streamVideo(video.getPath(), outputStream,codecEnum));
 }
 return ResponseEntity.notFound().build();
 }
}
</streamingresponsebody>

THE SERVICE


@Service
public class VideoStreamingService {

 public void streamVideo(String videoPath, OutputStream outputStream, Codec codec) {

 FFmpeg ffmpeg = FFmpeg.atPath()
 .addArguments("-i", videoPath)
 .addArguments("-b:v", "5000k")
 .addArguments("-maxrate", "5000k")
 .addArguments("-bufsize", "10000k")
 .addArguments("-c:a", "aac")
 .addArguments("-b:a", "320k")
 .addArguments("-movflags", "frag_keyframe+empty_moov+faststart")
 .addOutput(PipeOutput.pumpTo(outputStream)
 .setFormat("mp4"))
 .addArgument("-nostdin");
 if (codec == Codec.AMD) {
 ffmpeg.addArguments("-profile:v", "high");
 }
 ffmpeg.addArguments("-c:v", codec.getFfmpegArgument());
 ffmpeg.execute();
 }
}


I have some enums to vary the encoding and use hardware acceleration or not.


and here is an example from my player
the endpoint is the following


http://localhost:8080/api/stream/2?codec=AMD
screenshot

I'm not sure if there's someone with more knowledge in either FFmpeg or Spring who could help me with this minor issue, I would greatly appreciate it. I've included the URL of the repository in case anyone would like to review it when answering my question




I tried changing the encoding format.
I tried copying the metadata from the original video.
I tried sending a custom header.
None of this has worked.


I would like to achieve what is mentioned in many sites, which is when you load a video from the network, the player shows how much of that video you have in the local "buffer".


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Adding Text to Video with ffmpeg in Flutter
9 mars 2024, par AimanI am trying to add text to a video using ffmpeg package but it returns an error i.e. Return Code 1
Here's my code.


final videoPath = _controller.file.path;
 final outputName = videoPath.hashCode.toString();

 final output =
 File('${(await getTemporaryDirectory()).path}/$outputName.mp4');

 String command =
 "-y -i $videoPath -filter_complex '[0]scale=540:-1[s];[s]drawtext=fontfile=/storage/emulated/0/Download/SuperDessert.ttf:text='MY_TEXT':fontsize=24:fontcolor=white:x=(w-text_w)/2:y=(h-text_h)/2' ${output.path}";

 final session = await FFmpegKit.execute(command);

 final returnCode = await session.getReturnCode();

 if (ReturnCode.isSuccess(returnCode)) {
 log("Success full text added");
 } else {
 log("Error adding text: ${await session.getFailStackTrace()}");
 }


I have tried changing the output directory, changed
fontfiletofont

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File Decryption in (AESMode.ctr) mode showing Exception Failed to decode data using encoding 'utf-8' in dart ?
20 novembre 2020, par JaiWhile decoding the video file using
aes-ctrmode am getting error like below,

Unhandled Exception: FileSystemException: Failed to decode data using encoding 'utf-8'

Used ffmpeg for encrypting file :


ffmpeg -i samplevideo.mp4 -vcodec copy -acodec copy -encryption_scheme cenc-aes-ctr -encryption_key 76a6c65c5ea762046bd749a2e632ccbb -encryption_kid a7e61c373e219033c21091fa607bf3b8 enc_v1_file.mp4

Used Dart to decode video file :


Future<string> decryptFile(filePath) async {
 // filePath - Local encrypted file path
 var encodedKey = 'NzZhNmM2NWM1ZWE3NjIwNDZiZDc0OWEyZTYzMmNjYmI=';
 var encodedIv = 'YTdlNjFjMzczZTIxOTAzM2MyMTA5MWZhNjA3YmYzYjg=';
 var encryptedBase64EncodedString = new File(filePath).readAsStringSync();
 var decoded = base64.decode(encryptedBase64EncodedString); // Error in this line
 final key1 = enc.Key.fromBase64(encodedKey);
 final iv = enc.IV.fromBase64(encodedIv);
 final encrypter = enc.Encrypter(enc.AES(key1, mode: enc.AESMode.ctr));
 final decrypted = encrypter.decryptBytes(enc.Encrypted(decoded), iv: iv);
 final filename = '${p.basenameWithoutExtension(filePath)}.mp4';
 final directoryName = p.dirname(filePath);
 final newFilePath = p.join(directoryName, filename);
 var newFile = new File(newFilePath);
 await newFile.writeAsBytes(decrypted);
 return newFilePath;
}
</string>

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