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Autres articles (111)
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Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (8967)
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FFMPEG Flutter : attaching captions to a video issue
24 juillet 2024, par Aqib JavedI am working on an app where i first extract audio from a video, then transcribe it and then i wanna attach that transcribed captions or subtitles to the original video.


Everything is working smooth except the subtitles attaching part
if im running the FFMPEG command directly in terminal, it works fine but not in flutter


here is my code of attaching the subtitles to the video :


Future<void> attachCaptionsToVideo(DeepGramResponse deepGramResponse) async {
 var tempDir = await getTemporaryDirectory();

 final outputPath = "${tempDir.path}/outputWithCaptions.mp4";
 final String subtitlePath = deepGramResponse.captionsPath
 .replaceAll('\\', '\\\\')
 .replaceAll(' ', '\\ ');
 final String command =
 '-y -i ${deepGramResponse.videoPath} -vf subtitles=$subtitlePath $outputPath';
 await FFmpegKit.executeAsync(command, (session) async {
 final returnCode = await session.getReturnCode();
 final output = await session.getOutput();
 final error = await session.getFailStackTrace();

 log('FFmpeg command executed with return code: $returnCode');
 if (ReturnCode.isSuccess(returnCode)) {
 log('Captions attached successfully');
 deepGramResponse.copyWith(
 videoPath: outputPath,
 );
 Get.to(() => VideoPlayerScreen(videoPath: outputPath));
 } else {
 log('FFmpeg command failed');
 log('Error output: $output');
 log('Error details: $error');
 Fluttertoast.showToast(
 msg: 'Something went wrong, please try again later');
 }
 });
 }
</void>

here is the error im getting :




[AVFilterGraph @ 0x7b8a3f35f0] No option name near
'/data/user/0/com.example.blink/app_flutter/captions.srt'
[AVFilterGraph @ 0x7b8a3f35f0] Error parsing a filter description around :
[AVFilterGraph @ 0x7b8a3f35f0] Error parsing filterchain 'subtitles=/data/user/0/com.example.blink/app_flutter/captions.srt'
around :
Error reinitializing filters !
Failed to inject frame into filter network : Invalid argument
Error while processing the decoded data for stream #0:0
Conversion failed !




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Overlaying video with ffmpeg
11 novembre 2012, par eleeI'm attempting to write a script that will merge 2 separate video files into 1 wider one, in which both videos play back simultaneously. I have it mostly figured out, but when I view the final output, the video that I'm overlaying is extremely slow.
Here's what I'm doing :
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Expand the left video to the final video dimensions
ffmpeg -i left.avi -vf "pad=640:240:0:0:black" left_wide.avi
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Overlay the right video on top of the left one
ffmpeg -i left_wide.avi -vf "movie=right.avi [mv] ; [in][mv] overlay=320:0" combined_video.avi
In the resulting video, the playback on the right video is about half the speed of the left video. Any idea how I can get these files to sync up ?
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FFMPEG not creating thumbnails
12 juin 2016, par MixedVegMy ffmpeg command in php is
echo $cmd_thumbnail_create = ("\"$ffmpeg\" -i \"" . $dir.$videopath . "\" -an -ss $getFromSecond \"" . $dir.$thumbnailpath ."\"");
exec($cmd_thumbnail_create);Output of which is
"C :\FFMPEG\bin\ffmpeg" -i "C :/xampp/htdocs/final/uploaded_videos/intro_en.mp4" -an -ss 6 "C :/xampp/htdocs/final/thumbnail/intro_en.jpg"
This when copied and executed on the command prompt creates the thumbnail at proper location with proper name.
Any suggestions ?
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