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• Can you insert text from a file in real time with ffmpeg streaming ?

  6 décembre 2020, par Fight Fire With Fire

  I have this code i use to stream a file and place the name of the show of the video at a certain time of the video ( name_of_show ) at the top of the screen, and the bottom of the screen it take the name of the show from video_title.txt and places it on the bottom of the screen.

  


  What I want to do is find a way at a interval say 1 or 2 minutes, pull whatever text is currently in video_title.txt and place it in the video for a few seconds.

  


  I would update video_title.txt from another python program. Here's my current code below.

  


             command = [
        "ffmpeg" , "-re" , "-i" , video[0] ,
        "-vf" ,  "[in]drawtext=fontsize=40:fontcolor=white:box=1:boxcolor=black@0.8:boxborderw=5:fontfile=/home/fonts/timeless.ttf: text='" + name_of_show + "':x='W-(W+tw)*mod(t\,10)/10':y='H/20':enable='between(t,50,70)',drawtext=fontsize=20:fontfile=/home/fonts/timeless.ttf:textfile=/video_title.txt:fontcolor=white:box=1:boxcolor=black@0.8:boxborderw=5:x=W-w+5:y=h-th-50:enable='1'[out]"
        "-vcodec" , "libx264", "-pix_fmt", "yuv420p",
        "-preset" , "medium" , "-r" , "30" , "-g" , "48" , "-b:v" , "2500k" ,
        "-acodec" , "libmp3lame" , "-ar" , "44100", "-threads" , "6" ,
        "-q:a" , "3" , "-b:a" , "712000" ,"-bufsize", "512k" , "-f" ,
        "flv" , STREAM_URL,


  


  Ultimately the effect I am trying to achieve is a long stream of lets say 1 hour on twitch/youtube where someone could send a text message and it would appear in the stream.

  


• How to Fix Problem Drawer Text and Join with FFmpeg

  13 août 2019, par Marcos QP

  I have two short videos with good state (input1.mp4, input2.mp4).
  I use ffmpeg to edit videos.

  Part 1
  I combine two videos, it works correctly

  Part 2
  I draw text on input1.mp4, result output1.mp4, it works correctly.
  I join two videos (output1.mp4, input2.mp4), its join success. But result video is corrupt.

  ------------------------------------------------------------------

  I use these comands ffmpeg

  Combine Videos
  ffmpeg -y -f concat -safe 0 -i list.txt -c copy merged.mp4

  Draw Text on Video
  ffmpeg -y -i input1.mp4 -vf "drawtext=fontfile=/Windows/fonts/arialbd.ttf : text=’Some Text’ : fontcolor=white : fontsize=50 : box=1 : boxcolor=black@0.5 : boxborderw=5 : x=(w-text_w)/2 : y=(h-text_h/2)" -codec:a copy output1.mp4

  ------------------------------------------------------------------
  

  Please i need your help to drawer text and join.
  Sorry my bad english. I am still learning.
  Thanks.

• movtextdec : Add support for automatic text wrapping

  14 août 2015, par Niklesh

  movtextdec : Add support for automatic text wrapping
  The value of wrap_flag in the Text Wrap Box specifies if the text is to
  
  be wrapped or not. Uses ’end of line wrap’ amongst the wrap styles
  
  supported by ASS if the text is to be wrapped, i.e ; fill as much text
  
  in a line as possible, then break to next line.
  The 3GPP spec has no provision for smart wrapping.
  Signed-off-by : Niklesh <niklesh.lalwani@iitb.ac.in>
  

  • [DH] libavcodec/movtextdec.c