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• yuv420p10le format using ffmpeg without green background in web browser

  16 août 2021, par OneWorld

  I just rebuilt ffmpeg, and generated a yuv420p10le video. Below is a snapshot from the video.

  


  

  


  It seems to display a green background in chrome when I play it. However, if I switch hardware acceleration off in Chrome, the background appears white. Also if I play the video in VLC player the background is white.

  


  I was wondering if there is a way within ffmpeg to get yuv420p10le to show backgrounds as white in browsers without needing to do anything special in the browser settings ?

  


  My ffmpeg configuration is as follows :-

  


  ffmpeg -i after_building_ffmpeg.mp4
ffmpeg version N-103222-gf040c1ec4e Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --enable-gpl --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3 --enable-libxcb
  libavutil      57.  3.100 / 57.  3.100
  libavcodec     59.  4.101 / 59.  4.101
  libavformat    59.  4.101 / 59.  4.101
  libavdevice    59.  0.100 / 59.  0.100
  libavfilter     8.  1.103 /  8.  1.103
  libswscale      6.  0.100 /  6.  0.100
  libswresample   4.  0.100 /  4.  0.100
  libpostproc    56.  0.100 / 56.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'after_building_ffmpeg.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf59.4.101
  Duration: 00:00:03.00, start: 0.000000, bitrate: 5893 kb/s
  Stream #0:0(und): Video: h264 (High 10) (avc1 / 0x31637661), yuv420p10le(tv, gbr/unknown/unknown), 1400x1400 [SAR 1:1 DAR 1:1], 5888 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]


  


• How to get FFMpeg code working on remote server ?

  4 février 2016, par OMi

  I am using the following code to add plain text to videos. It works fine on localhost with EasyPHP server but I am not able to get the output on server (ffmpeg hosting). In addition, video conversion, video to audio everything is working fine.

  @exec('ffmpeg -y -i '.$source_file.' -vf drawtext="fontfile=font_omiA.ttf: \ text='.$watermark_text.': fontcolor=white@0.5: fontsize=20: \ x=(w-text_w)-3: y=(h-text_h-line_h)+10" '.$output_filename.'');

  I tried with following code too but I didn’t get success :(

  @exec("ffmpeg -y -i ".$source_file." \"fontfile=font_omiA.ttf: \ text=".$watermark_text.": \ fontcolor=white@0.5: \ fontsize=20: \ x=((w-text_w)-3): y=((h-text_h-line_h)+10))\" ".$output_filename."");

• ffmpg - Overlay merged video from a bunch of small videos on another video

  31 août 2022, par Krishna Chebrolu

  I have a situation where 3-4 small 5secs video clips to be merged and placed at a specific point in time of another video within a fixed frame of 800x600.

  


  For example, main video is of 40 secs of 1280x720 resolution and have 4 small clips of 5 secs each to be placed in a frame of 800x600 from 10 to 30 secs one after the other (or) merge them before placing within the frame.

  


  I tried multiple filters and failing to get the required output.

  


  ffmpeg -y -i bg.mp4 -i c0.mp4 -i f.mp4 -filter_complex "split [main][tmp]; [tmp][1:v][1:a][2:v][2:a]concat=n=2:v=1:a=1[tmp1]; [main][tmp1] overlay=enable='between(t,10,24)':x=50:y=50[v]; [v]drawtext=enable='between(t,26,29)':font='DejaVu Serif':text='Kris Cheb':x=(w-tw)/2:y=((h-text_h)/4): fontsize=80: fontcolor=white, drawtext=enable='between(t,27,29)':text='Awesome Work..':x=(w-tw)/2:y=(((h-text_h)/3)+20): fontsize=38: fontcolor=white, drawtext=enable='between(t,27,29)':text='Congratulations!!':x=(w-tw)/2:y=(((h-text_h)/2)+10): fontsize=38: fontcolor=white"[v] -map [v] out.mp4


  


  Of course, in the above command, I'm yet to add scale with force_original_aspect_ratio=decrease filter and associated attributes.

  


  Could someone please suggest how to achieve this with ffmpeg ?

  


  Thanks

  


  [EDIT-1] :

  


  To overcome this issue, as an alterative, I had split bg.mp4 into multiple segments intro.mp4, outro.mp4 & frame.png and concatenated them with the following command, which is working fine. Of course, there is slight deviation from original requirement of placing c0.mp4 & f.mp4 as overlay in the middle segment and now frame.png is being used as overlay on these middle segment clips.

  


  ffmpeg -y -i intro.mp4 -i c0.mp4 -i f.mp4 -i outro.mp4 -i frame.png &#xA;-filter_complex "[0:v][0:a][1:v][1:a][2:v][2:a][3:v][3:a]concat=n=4:v=1:a=1[vv][a];&#xA;[vv][4:v]overlay=enable=&#x27;between(t,4,16)&#x27;:x=0:y=0[v];&#xA;[v]drawtext=text=&#x27;NAME&#x27;: font=&#x27;Serif&#x27;:fontsize=70: fontcolor=white: x=((w-tw)/2):y=(((h-text_h)/4)&#x2B;10):enable=&#x27;between(t,16,20)&#x27;, &#xA;drawtext=text=&#x27;TEXT2&#x27;:font=&#x27;Serif&#x27;:fontsize=40: fontcolor=black:x=((w-tw)/2): y= ((h/2)&#x2B;30):enable=&#x27;between(t,16,20)&#x27;,&#xA;drawtext=text=&#x27;<text3>&#x27;:font=&#x27;Serif&#x27;:fontsize=40: fontcolor=black:x=((w- &#xA;tw)/2):y=((h/2)&#x2B;70):enable=&#x27;between(t,16,20)&#x27;[v]" -vsync 2 -map &#xA;[v] -map [a] out.mp4&#xA;</text3>

  


  But, need help in replacing the audio of middle segment clips c0.mp4 & f.mp4 with the audio from bgm.mp3 which will be given as a new input.

  


  Appreciate all the help..