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• How to add moov atom to mp4 file that is uploaded to flask server

  12 avril 2021, par Drew Parmelee

  I have a flask web server that lets the user upload a video from an HTML form using the following endpoint :

  


  @app.route('/account', methods=['GET', 'POST'])
def account():

    uploadVideoForm = UploadVideoForm()
    if request.method == 'POST' and uploadVideoForm.validate():

        #  add moov atom to uploaded video

        db.put(uploadVideoForm.video.data)
        return redirect(url_for('account'))


  


  I need to prepare this uploaded video for progressive download streaming by adding a moov atom to the beginning of the file. How can this be accomplished ? Could be server-side, or in the users browser with js before they submit the form.

  


  I was able to add a moov atom to a .mp4 using :

  


  ffmpeg -i file.mp4 -c copy -map 0 -movflags +faststart out.mp4


  


  in the command line, but I'm not sure how this can be done on my server.

  


  I really appreciate any help,

  


• Looking for a RTSP-server that can listen on a configured port and support subtitle or text streaming

  15 août 2021, par GotIt

  I'm looking for a RTSP-server that can listen on a configured port (8554 for example), then if I run FFmpeg with :

  


  


  ffmpeg -f v4l2 -i /dev/video0 -c:v libx264 -intra -an -f rtsp
-rtsp_transport tcp rtsp ://192.168.1.10:8554/test

  


  


  Then the RTSP-server will RECORD the video, and to play it, I just need to run it with :

  


  


  ffplay -i rtsp ://192.168.1.10:8554/test

  


  


  I need the RTSP-server to support TCP transport and H264 video encoder and any of subtitle or text encoder (mov_text, T.140, etc.) and stream from a live-video.

  


  Live555 only streams from files (VOD).
simple-rtsp-server only support video and audio, no subtitle.
I'd prefer something open-source. Thank you so much.

  


• Using FFMPEG to stream continuously vides files to a RTMP server

  25 juillet 2012, par Instaketch

  FFMPEG handle RTMP streaming as input or ouput, and it's working well.

  I want to stream some videos (a dynamic playlist managed by a python script) to a RTMP server, and i'm currently doing something quite simple, i stream my videos one by one with FFMPEG to the RTMP server, however this causes a connection break every time a videos end, and the stream is ready to go when the next video begins.

  I would like to stream those videos without any connection breaks continuously, then the stream could be correctly viewed.

  I use this command to stream my videos one by one to the server

  ffmpeg -re -y -i myvideo.mp4 -vcodec libx264 -b:v 600k -r 25 -s 640x360 -filter:v yadif -ab 64k -ac 1 -ar 44100 -f flv "rtmp ://mystreamingserver/app/streamName"

  I looked for some workarounds over the internet for many days, i found some people talking about using a named pipe as input in FFMPEG, i've tried it and it didn't work well since FFMPEG is not only closing the RTMP stream when a new video comes but closing itself too.

  Is there any way to do this ? (stream a dynamic playlist of videos with ffmpeg to RTMP server without connection breaks)