Recherche avancée

Sur d’autres sites (8746)

• Hls.js record file

  28 février 2023, par Huhngut

  Hello and thanks for reading,

  


  I have a Hls stream with an m3u8 playlist.
The Video is playing just fine on an Html page with a Video element and https://github.com/video-dev/hls.js

  


  But if I download the segments to join them they are only white pixels. VLC and FFmpeg can't handle them. VLC shows a white pixel for 10seconds and FFmpeg says that there's no stream in the file.

  


  So now I want to know what this hls.js is doing to make it running. To me a non-js developer it all looks a bit confusing. I was able to understand stuff like which function is called when a new segment is loaded. Unfortunately, I was unable to understand stuff about the data. The one character variables are confusing to me.

  


  For now, I capture the stream of the video element and download it later but I don't like this solution at all.

  


  How to help me

  


  


  It would be very nice if anyone can tell me how to hook into the
script and tell it to download directly to the disk so I'm independent
of framerate drops.

  


  If anyone can tell how the script is able to convert the data so that
the element can use it and I would be able to implement or do
it with FFmpeg would be really helpful.

  


  I also thought it might be possible to have a listener when the blob
changes to store its contents.

  


  


  Thanks for everyone helping. I'm trying to find a solution for too many hours now.

  


• FFMPEG rtsp stream add timestamp to output file

  20 février 2020, par kernel252

  I’m trying add timestamp to output file from FFMPEG but I’m getting this error.
  

  Filtergraph 'drawtext=fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf:text='\%T': fontcolor=white@0.8: x=7: y=460' was defined for video output stream 0:0 but codec copy was selected.
  
  Filtering and streamcopy cannot be used together

  And my command is :

   ffmpeg -i rtsp://admin:password@192.168.1.52:554/11 -vf "drawtext=fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf:text='\%T': fontcolor=white@0.8: x=7: y=460" -acodec copy -vcodec copy test.avi

  And the output :

  ffmpeg version N-75939-g6eaf97c Copyright (c) 2000-2015 the FFmpeg
  developers built with gcc 4.9.2 (Raspbian 4.9.2-10) configuration :
  —arch=armel —target-os=linux —enable-gpl —enable-libx264 —enable-nonfree —enable-libfreetype
  libavutil 55. 3.100 / 55. 3.100
  libavcodec 57. 5.100 / 57. 5.100
  libavformat 57. 3.100 / 57. 3.100
  libavdevice 57. 0.100 / 57. 0.100
  libavfilter 6. 11.100 / 6. 11.100
  libswscale 4. 0.100 /
  4. 0.100
  libswresample 2. 0.100 / 2. 0.100
  libpostproc 54. 0.100 / 54. 0.100 Input #0, rtsp, from ’rtsp ://user :@192.168.1.52:554/11’ :
  Metadata :
  
  title : 10 Duration : N/A, start : 0.159000, bitrate : N/A
  
  Stream #0:0 : Video : h264 (Main), yuv420p, 1280x720, 25.08 tbr, 90k tbn, 180k tbc
  
  Stream #0:1 : Audio : adpcm_g726, 8000 Hz, mono, s16, 16 kb/s Filtergraph
  ’drawtext=fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf:text=’\%T’ :
  fontcolor=white@0.8 : x=7 : y=460’ was defined for video output stream
  0:0 but codec copy was selected. Filtering and streamcopy cannot be
  used together.

  Where I’m doing a mistake ?

  Thank you for all reply :)

• FFMPEG rtsp stream add timestamp to output file

  14 octobre 2015, par kernel252

  I’m trying add timestamp to output file from FFMPEG but I’m getting this error.
  

  Filtergraph 'drawtext=fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf:text='\%T': fontcolor=white@0.8: x=7: y=460' was defined for video output stream 0:0 but codec copy was selected.
  
  Filtering and streamcopy cannot be used together

  And my command is :

   ffmpeg -i rtsp://admin:password@192.168.1.52:554/11 -vf "drawtext=fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf:text='\%T': fontcolor=white@0.8: x=7: y=460" -acodec copy -vcodec copy test.avi

  And the output :

  ffmpeg version N-75939-g6eaf97c Copyright (c) 2000-2015 the FFmpeg
  developers built with gcc 4.9.2 (Raspbian 4.9.2-10) configuration :
  —arch=armel —target-os=linux —enable-gpl —enable-libx264 —enable-nonfree —enable-libfreetype
  libavutil 55. 3.100 / 55. 3.100
  libavcodec 57. 5.100 / 57. 5.100
  libavformat 57. 3.100 / 57. 3.100
  libavdevice 57. 0.100 / 57. 0.100
  libavfilter 6. 11.100 / 6. 11.100
  libswscale 4. 0.100 /
  4. 0.100
  libswresample 2. 0.100 / 2. 0.100
  libpostproc 54. 0.100 / 54. 0.100 Input #0, rtsp, from ’rtsp ://user :@192.168.1.52:554/11’ :
  Metadata :
  
  title : 10 Duration : N/A, start : 0.159000, bitrate : N/A
  
  Stream #0:0 : Video : h264 (Main), yuv420p, 1280x720, 25.08 tbr, 90k tbn, 180k tbc
  
  Stream #0:1 : Audio : adpcm_g726, 8000 Hz, mono, s16, 16 kb/s Filtergraph
  ’drawtext=fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf:text=’\%T’ :
  fontcolor=white@0.8 : x=7 : y=460’ was defined for video output stream
  0:0 but codec copy was selected. Filtering and streamcopy cannot be
  used together.

  Where I’m doing a mistake ?

  Thank you for all reply :)