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• How do I independently fade in/out multiple (3+) overlay texts over video using FFMPEG ?

  10 janvier 2019, par Balpreet_1988

  When I use this code the 1st text fades out when second text fades in. This should not happen in this code :

  I have tried the provided code in multiple ways but this is not working.

  ffmpeg -y -i title.mp4 -filter_complex "[0:v]drawtext=fontsize=100:fontfile=tst.ttf:fontcolor=0xDEB887:shadowcolor=black:shadowx=5:shadowy=5:text='Top 5 Upcoming Samsung':x=50:y=200,format=yuva444p,fade=t=in:st=0.2:d=1:alpha=1[ovr1];[ovr1:v]drawtext=fontsize=100:fontfile=tst.ttf:fontcolor=0xDEB887:shadowcolor=black:shadowx=5:shadowy=5:text='SmartPhones in 2019':x=50:y=400,format=yuva444p,fade=t=in:st=2.2:d=1:alpha=1[ovr2];[0][ovr2]overlay" test.mp4

  This should fade in 1st text at 0.2 seconds which should stay till the end of the video and 2nd text should fade in at 2.2 seconds and remain till end of video.

• avformat/hlsenc : add var_stream_map LANGUAGE field string parameter

  23 janvier 2019, par Steven Liu

  avformat/hlsenc : add var_stream_map LANGUAGE field string parameter
  use a:0,agroup:aud_low,default:Yes,language:CHN a:1,agroup:aud_low,language:ENG
  
          a:2,agroup:aud_high,default:YesYes,language:CHN a:3,agroup:aud_high,language:ENG
  
          v:0,agroup:aud_low v:1,agroup:aud_high
  
          create master m3u8 list.
  result :
  
  EXTM3U
  
  EXT-X-VERSION:3
  
  EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_0",DEFAULT=YES,LANGUAGE="CHN",URI="out_0.m3u8"
  
  EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_1",DEFAULT=NO,LANGUAGE="ENG",URI="out_1.m3u8"
  
  EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_2",DEFAULT=YES,LANGUAGE="CHN",URI="out_2.m3u8"
  
  EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_3",DEFAULT=NO,LANGUAGE="ENG",URI="out_3.m3u8"
  
  EXT-X-STREAM-INF:BANDWIDTH=1170400,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_low"
  
  out_4.m3u8
  
  EXT-X-STREAM-INF:BANDWIDTH=3440800,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_high"
  
  out_5.m3u8
  Signed-off-by : Steven Liu <lq@chinaffmpeg.org>
  

  • [DH] doc/muxers.texi
  • [DH] libavformat/dashenc.c
  • [DH] libavformat/hlsenc.c
  • [DH] libavformat/hlsplaylist.c
  • [DH] libavformat/hlsplaylist.h

• Single Command to crop, animate (effects) and add images and texts in one video

  7 mars 2019, par Vivek Faldu

  I want to create a command where i can perform single operation.

  I have few commands which are working well individually

  Add Background Music Command

  String[] command = {"-i", inputPath, "-i", 
  
  audioPath, "-filter_complex", "amix", "-preset", 
  
  "ultrafast", "-vcodec", "libx264", outputPath};

  Multiple Image OverLay Command

  String[] command = {"-i", inputPath, "-i", 
  
  audio.getAbsolutePath(), "-i", image1,
  
  "-i", image2, "-i", image3, "- 
  
  filter_complex","[0][1]overlay=x=W/2-w/2:y=H/2- 
  
  h/2:enable='between(t,2,10)'[v1];[v1][2]overlay=x=W/2-w/2:y=H/2- 
  
  h/2:enable='between(t,10,20)'[v2];[v2][3]overlay=x=W/2-w/2:y=H/2- 
  
  h/2:enable='gt(t,20)'[v3]","-map", "[v3]", outputPath};

  Image OverLay Command

  String[] command = {"-i", inputPath, "-i", 
  
  image,"-filter_complex","overlay=(main_w-overlay_w)/2: 
  
  (main_h-overlay_h)/2","-codec:a", "copy", outputPath};

  Cropping Command

  String[] command = {"-i", inputPath, "-filter:v", "crop=iw/2:ih:" 
  
  + 0 + ":" + 0, "-c:a", "copy", outputPath};

  Effect

  String[] command = {"-i", inputPath, "-loop", "1", "-t", "2", "- 
  
  i", image1, "-loop", "1", "-t", "2", "-i", 
  
  image2, "-filter_complex", " 
  
  [0]boxblur=enable='lt(t,2)+gt(t,10)'[vid]; 
  
  [1:v]format=rgba,fade=in:st=0:d=0.5:alpha=1,
  
  fade=out:st=1.5:d=0.5:alpha=1[img1]; 
  
  [2:v]format=rgba,fade=in:st=0:d=0.5:alpha=1,
  
  fade=out:st=1.5:d=0.5:alpha=1,setpts 
  
  =PTS+10/TB[img2];[vid][img1]overlay=(main_w-overlay_w)/2:(main_h- 
  
  overlay_h)/2[bkg];[bkg][img2]overlay=(main_w-overlay_w)/2:(main_h- 
  
  overlay_h)/2", "-preset", "ultrafast", "-c:a", "copy", outputPath};

  But I don’t have any clue how to combine this all to one single command. Please help me out.

  Thanks in advance.