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• Revision c09b81719f : Merge "General cleanups."

  26 juillet 2013, par Dmitry Kovalev

  Changed Paths :
   Modify /vp9/common/vp9_entropymode.h

  
   Modify /vp9/encoder/vp9_encodeframe.c

  
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_rdopt.c

  
  
  Merge "General cleanups."

• HTML5 Video Editor in browser [on hold]

  10 juillet 2017, par user8286152

  I want a user to be able to upload a video to the website :

  <input type="file" accept="image/*" /> 

  and from there we are simply overlaying text (that they user inputs from a different view) onto it and stitching together a few images after the video with ffmpeg.

  We need the user to be able to preview the video after they upload it through the code above (whether it’s from their phone’s gallery or they take the video at that moment) and being able to crop the video (square), trim the video (say they only want the timestamp of 5s - 30s of their video), zoom in, etc. And then once they confirm the editing of the video they like, they can upload it to our server and share it, download it, etc. I realize this may be CPU intensive.

  We can set limitations of the video file (i.e. mp4) and size if that’s a problem. But I just cannot seem to find anything open source out there that allows the client to be able to do video manipulation/editing. (If there is nothing open source, is there any other options ?)

  We are using PHP and ffmpeg to do stitching of text overlay,videos, images, etc., if that helps.

  We are in very early stages and mostly in proof of concept, so I don’t have any specific code to show. Let me know if you have any other suggestions of doing this.

• FFmpeg output video is not seekable. Output video is not playing instantly instead browser loads it completely then plays it

  19 février 2024, par Mohit56

  Hi I am using ffmpeg to transcode video. In my code I have used 'fluent-ffmpeg' npm package with nodeJs and 'aws-sdk' to save output video by writestream into s3 bucket.

  


  Problem
-> Video is getting transcoded and I am successfully able to save the video into s3 bucket but. As I paste the object_url of that video into browser and try to play, but that video is not playing instantly I have checked on 'developer console tool' browser is loading all the video once that is done then only it starts playing that is a problem.

  


  ->Let say if I have output video of size 10GB on that case browser will load all 10GB data then only it will start playing that video.

  


  ->If I am not using writestream approach and directly upload the video into local directory first then upload into s3 bucket, In this case if I play the video using object URL then that video plays instantly. In this case I don't have to wait for whole 10GB video to load then play it which is good.

  


  -> Can anybody help me to fix my writestream solution because I don't want to save the output video into my localdirectory. I want to writestream the output video directly into s3 bucket.

  


  Code Snippet

  


  const ffmpeg = require('fluent-ffmpeg');
const AWS = require('aws-sdk'); 
const stream = require("stream");

//set up your aws connection

const command = ffmpeg(inputVideoURL) 
.outputOptions(['-movflags', 'frag_keyframe']) 
.size('854x480') // set the desired resolution (480p) .outputFormat('mp4') 
.videoCodec('libx264') 
.audioCodec('aac') 
.on('progress',(p)=>{ console.log(p) }) 
.on('stderr',(err)=>console.log(err)) 
.on('start', commandLine => console.log('Spawned FFmpeg with command: ' + commandLine)) 
.on('end', () => console.log('Transcoding finished.')) 
.on('error', err => console.error('Error:', err))

//=>To save file into s3 using write steam. command.writeToStream(uploadFolderFileWriteStream('StreamCheck/output2.mp4'));

function uploadFolderFileWriteStream(fileName) { try { const pass = new stream.PassThrough();

const params = {
  Bucket: bucketName,
  Key: fileName,
  Body: pass,
  ACL: "public-read",
  ContentType:'video/mp4' ,
};

const upload = s3.upload(params);

upload.on('error', function(err) {
  console.log("Error uploading to S3:", err);
});

upload.send(function(err, data) {
  if(err) console.log(err);
  else console.log("Upload to S3 completed:", data);
});

return pass;

} catch (err) { console.log("[S3 createWriteStream]", err); } }


  


  I have tried below option as well be all of them not worked 
-> .addOption("-movflags frag_keyframe+empty_moov") 
-> .addOption('-movflags', 'frag_keyframe+empty_moov') 
-> .addOutputOption("-movflags +faststart")
-> .addOption('-movflags', 'faststart+frag_keyframe+empty_moov+default_base_moof')