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• Working with content-type quicktime in ffmpeg throwing error `moov not found`

  6 mai 2019, par user10204157

  So my program is setup to download a video and stream it into a file. These videos are .mp4 and .mov.

  The problem is that .mov files do not work and I think it’s just the way I am streaming the file. But I am not sure. Because .mp4 files work without any errors. But when I use .mov files I get an error saying

  Powershell Errors : [mov,mp4,m4a,3gp,3g2,mj2 @ 000002707b9cb700] moov atom not found

  Which is coming from this powershell script :

  ffmpeg -i $Args[0] -vcodec copy -acodec copy -movflags +faststart $Args[1]

  The code that calls this script is as follows :

      streamVideos_PROMISES.push(
  
        axios({
  
          method: "get",
  
          url: video.url,
  
          responseType: "stream"
  
        })
  
      );
  
    }
  
  });
  
  Promise.all(streamVideos_PROMISES)
  
    .then(function(response) {
  
      response.map(response_item => {
  
        let tempFileName = new Date().valueOf();
  
        let videoType = response_item.headers["content-type"].split("/")[1];
  
        if (videoType === "quicktime") videoType = "mov"; <---Maybe the issue?
  
        const file = fs.createWriteStream(
  
          `./cache/videos/${tempFileName + "."}${videoType}`
  
        );
  
        var spawn = require("child_process").spawn,
  
          child;
  
        response_item.data.pipe(file);
  
        child = spawn("powershell.exe", [
  
          "./scripts/ffmpeg_convert.ps1",
  
          `./cache/videos/${tempFileName + "."}${videoType}`,
  
          ` ./cache/converted_videos/${tempFileName + "."}${videoType}`
  
        ]);
  
        child.stdout.on("data", function(data) {
  
          console.log("Powershell Data: " + data);
  
        });
  
        child.stderr.on("data", function(data) {
  
          console.log("Powershell Errors: " + data);
  
        });
  
        child.on("exit", function() {
  
          console.log("Finished converting thumbnails");
  
          return thumbsupply.generateThumbnail(
  
            `./cache/converted_videos/${tempFileName + "."}${videoType}`,
  
            {
  
              mimetype: response_item.headers["content-type"]
  
            }
  
          );
  
        });
  
        child.stdin.end(); //end input
  
      });
  
    })
  
    .catch(err => {
  
      console.log(err);
  
      res.status(500).json({ Error: "Could not generate thumbnail" });
  
    });

  note
  The response_item.headers["content-type"].split("/") for .mov is quicktime, so I assumed that I could interchange the extensions...Which is probably wrong.

  Edit
  So I manually typed in the $args as follows :

  ffmpeg -i "./cache/videos/1556897345129.mov" -vcodec copy -acodec copy -movflags +faststart "./cache/converted_videos/are_you_kidding_me.mov"

  and it works.

  Edit 2

  child = spawn("powershell.exe", [
  
      "./scripts/ffmpeg_convert.ps1",
  
      "./cache/videos/1556897345129.mov", <-- Using the string literal works.
  
      ` ./cache/converted_videos/${tempFileName + "."}${videoType}`
  
    ]);

• Can someone teach me about downloading DRM content ? [closed]

  1er octobre 2024, par KingKongGotNoBalls

  There is some videos that I would like to download that are DRM protected. I tried using StreamFab for the first time yesterday and it told me that the encryption used in the video was unknown or something like that.

  


  I have read that you have to get some keys and then unencrypt something. But I have tried researching it many times and I have never found someone throughly explain all the process. Most of the videos that I need are on the -N-B-A- site.

  


  Could someone explain to me the process of how to do that ?

  


• Accessing web content with ffmpeg on android

  9 janvier 2017, par Pure_eyes

  I’m using ffmpeg inside my xamarin.android project,by accessing a statically build version for the corresponding architecture of the device.
  I’m using https://www.johnvansickle.com/ffmpeg/, static builds which support https protocol.
  I’m calling ffmpeg by starting a new process and passing the arguments.Here is a pseudo code for the operation :

  arguments = {'-i',inputFileName,...}
  
  run('./ffmpeg',arguments,redirectOutput = true,...)
  
       .OnOutput(s) => log(s)

  Now,I want to access a file in the web, directly with ffmpeg, since from my testing it is more efficient in term of bandwidth, and speed.

  The problem i’m facing is that because i’m using a static build of ffmpeg, we need to statically link gclib, which results loss of dns resolution as stated in the readme :

  A limitation of statically linking glibc is the loss of DNS resolution. Installing
  nscd through your package manager will fix this or you can use
  "ffmpeg -i http://<ip address="address" here="here">/"</ip> instead of "ffmpeg -i http://example.com/"

  But the content that i’m trying to get provides strictly only through HTTPS,so there is no way to access it via the ip.
  But on Linux systems i had no problem accessing the content(With the same command as for android), thanks to nscd, which isn’t present in android.

  • Is there anyway to use android’s dns resolution ?
  • Or compile ffmpeg
    differently, as stated in this
    question ?Maybe using android
    NDK would default this ?Would ffmpeg even work then ?
  • Or somehow pipe the content, to
    ffmpeg’s stdin, and tell it to input from pipe (Would it still be
    more efficient, than downloading and saving the file, then running
    ffmpeg ) ?

  All suggestions are welcomed !

  EDIT

  As for SushiHangover advice, i was able to implement it via piping,i came up with two ways :

  Process ffmpegProcess = new Process();
  
  ffmpegProcess.StartInfo.FileName = "ffmpeg";
  
  ffmpegProcess.StartInfo.Arguments = ....
  
  ffmpegProcess.StartInfo.UseShellExecute = false;
  
  ffmpegProcess.StartInfo.RedirectStandardInput = true;
  
  ffmpegProcess.Start();
  
  
  
  //Way 1
  
  var data = await GetBytesAsync();
  
  await ffmpegProcess.StandardInput.BaseStream.WriteAsync(b, 0,b.Length);
  
  
  
  // Way 2
  
  await (await GetStreamAsync()).CopyToAsync(ffmpegProcess.StandardInput.BaseStream);

  Which both work, but they aren’t efficient in term of bandwidth as ffmpeg itself, i tested the network traffic with NetBalancer.

  Way 1 (Fresh Data - First time running program) : 401 KB Upload/ 19.7 MB Download
  Way 1 (Second time running program) : 334.3 KB Upload/ 17.7 MB Download
  Way 2 (Second time running program) : 370 KB Upload/ 16.6 MB Download
  Through FFmpeg Only (Fresh Data - First time running program) : 142.4 KB Upload / 5.3 MB Download
  Through FFmpeg Only (Second time running program) : 67.5 KB Upload / 3.7 MB Download

  Who can i overcome the gap ? I speculate that ffmpeg only reads the headers, and able to download only the needed audio stream based on my arguments, rather than the whole video as my snippets do.