Recherche avancée

Sur d’autres sites (3759)

• FFmpeg record rtsp stream to file error

  29 mars 2017, par tommyvisagroup

  I use ffmpeg to record rtsp stream, it work good but the output file got some proble, when I use use K-Lite Codec Pack to open the output (avi) file the video cant be seek, forward, backward and dont display video time. It lock like i am viewing streaming.

  here is the command i used

  ffmpeg -i rtsp://27.74.xxx.xxx:55/ufirststream -acodec copy -vcodec copy abc.avi

  video playing error with K-Lite Codec Park image

• Download,modify and upload video with S3

  9 février 2017, par Gold Fish

  I’m trying to write a Lambda function in nodejs that will download a file from S3 bucket, modify it, and then upload it back to another S3 bucket. For some reason, the algorithm prints the ’Modify Video’ log and then finishes and exit without error. What am I doing wrong ?

  var AWS = require('aws-sdk');
  
  var util = require('util');
  
  var ffmpeg = require('fluent-ffmpeg');
  
  var s3 = require('s3');
  
  
  
  // get reference to S3 client
  
  
  
  var awsS3Client = new AWS.S3();
  
  var options = {
  
    s3Client: awsS3Client,
  
  };
  
  var client = s3.createClient(options);
  
  
  
  exports.handler = function(event, context, callback) {
  
      // Read options from the event.
  
      console.log("Reading options from event:\n", util.inspect(event, {depth: 5}));
  
      var srcBucket = event.Records[0].s3.bucket.name;
  
      // Object key may have spaces or unicode non-ASCII characters.
  
      var srcKey    =
  
      decodeURIComponent(event.Records[0].s3.object.key.replace(/\+/g, " "));
  
      var dstBucket = srcBucket + "-dst";
  
      var dstKey    = "mod_" + srcKey;
  
  
  
      var dwnld_file_name = '/tmp/vid.mp4';
  
      var mdfy_file_name = '/tmp/mod_vid.mp4';
  
  
  
      // Sanity check: validate that source and destination are different buckets.
  
      if (srcBucket == dstBucket) {
  
          callback("Source and destination buckets are the same.");
  
          return;
  
      }
  
  
  
      // Infer the video type.
  
      var typeMatch = srcKey.match(/\.([^.]*)$/);
  
      if (!typeMatch) {
  
          callback("Could not determine the video type.");
  
          return;
  
      }
  
      var videoType = typeMatch[1];
  
      if (videoType != "mp4") {
  
          callback('Unsupported video type: ${videoType}');
  
          return;
  
      }
  
      console.log("Source bucket: ", srcBucket);
  
      console.log("srcKey: ", srcKey);
  
      console.log("Dest bucket: ", dstBucket);
  
      console.log("dstKey: ", dstKey);
  
  
  
      var params = {
  
        localFile: dwnld_file_name,
  
  
  
        s3Params: {
  
          Bucket: srcBucket,
  
          Key: srcKey,
  
        },
  
      };
  
      console.log("params for download: ", params);
  
      var downloader = client.downloadFile(params);
  
      downloader.on('error', function(err) {
  
        console.error("unable to download:", err.stack);
  
        callback("unable to download");
  
      });
  
      downloader.on('end', function() {
  
        console.log("done downloading");
  
        console.log("modify video");
  
        ffmpeg(dwnld_file_name)
  
            .setStartTime('00:00:01')
  
            .setDuration('1').output(mdfy_file_name).on('end', function() {
  
              console.log('Finished processing');
  
              params = {
  
                localFile: mdfy_file_name,
  
                //localFile: dwnld_file_name,
  
                s3Params: {
  
                  Bucket: dstBucket,
  
                  Key: dstKey,
  
                },
  
              };
  
              console.log("params for upload: ", params);
  
              var uploader = client.uploadFile(params);
  
              uploader.on('error', function(err) {
  
                console.error("unable to upload:", err.stack);
  
                callback("unable to upload");
  
              });
  
              uploader.on('end', function() {
  
                console.log("done uploading");
  
                callback('done');
  
                return;
  
              });
  
          });  //
  
      });
  
  };

• How can i combine three ffmpeg command in python ?

  15 mai 2022, par Anuj Saxena

  I want to combine three ffmpeg commands on my video and I want single output. In the following code I give a video(footage) as input and I want to compress my video, add watermark and also display frame numbers on the video and after executing these commands it gives an output video. How can I combine these commands ?

  


  f'''ffmpeg -i {footage} -vcodec libx264 -acodec aac \ "drawtext=text='{hostname}\n {socket.gethostbyname(hostname)}\n {getpass.getuser()}':x=10:y=H-th-10:fontfile=KhmerOS.ttf:fontsize=50:fontcolor=black:shadowcolor=black:shadowx=2:shadowy=2 " \ "drawtext=fontfile=KhmerOS.ttf: text='%{{frame_num}}': start_number=1: x=(w-tw)/2: y=h-(2*lh): fontcolor=black: fontsize=50: box=1: boxcolor=white: boxborderw=5" -c:a copy {mov_path} '''