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• FFmpeg remove background of video with no black outline

  26 février 2024, par Duc Pham The

  Im using this ffmpeg command to overlay a video on video(with remove black background)

  


  ffmpeg -i /home/ducpt/bunny.mp4 -i overlay_video.mp4 -filter_complex "[1:v]colorkey=0x000000:0.1:0.1[ckout];[0:v][ckout]overlay=enable='between(t,0, 4)':format=rgb[out]" -map '[out]' output.mp4


  


  I used filter_complex "colorkey 0x000000:0.1:0.1" to remove background of overlay video but result have a black outline.

  


  This is screenshot of video overlay original


  


  And this is result

  


  

  


  I tried to use unpremultiply=inplace=1 to remove black outline but not working

  


  ffmpeg -i /home/ducpt/bunny.mp4 -i overlay_video.mp4 -filter_complex "[1:v]colorkey=0x000000:0.1:0.1[ckout];[ckout]unpremultiply=inplace=1 [ckout2];[0:v][ckout2]overlay=enable='between(t,0, 4)':format=rgb[out]" -map '[out]' output.mp4


  


  Please help me remove black outline :(

  


  Sorry for my bad English !

  


• How to fix call lib ffmpeg by c#

  20 février 2017, par Thang Tran

  string _a= -i "D:_InputFolder\Jamaican man talking the truth about #zika virus.mp4" -filter_complex "[0:a]atempo=0.9,volume=1.6,asetrate=r=44100*33.6/30,atempo=30/33.6,highpass=f=400,lowpass=f=4100,earwax,biquad,compensationdelay,equalizer=f=222:width_type=o:width=2:g=5,equalizer=f=444:width_type=h:width=220:g=5 ; setpts=PTS/0.9" -vcodec libx264 -pix_fmt yuv420p -r 30 -g 60 -b:v 1400k -profile:v main -level 3.1 -acodec libmp3lame -b:a 128k -ar 44100 -metadata title="" -metadata artist="" -metadata album_artist="" -metadata album="" -metadata date="" -metadata track="" -metadata genre="" -metadata publisher="" -metadata encoded_by="" -metadata copyright="" -metadata composer="" -metadata performer="" -metadata TIT1="" -metadata TIT3="" -metadata disc="" -metadata TKEY="" -metadata TBPM="" -metadata language="eng" -metadata encoder="" -threads 0 -preset superfast "D:_OutputFolder\videoOutput.mp4"

  -----------this is the code goi goi sua sound in c # error

  string _b= -i "D:_InputFolder\Jamaican man talking the truth about #zika virus.mp4" -acodec pcm_u8 -ar 22050 "D:_OutputFolder\videoOutput.wav"
  — with code editing video style is back.

  file class run ffmpeg
  call c# :
  string _result = ffmpeg.RunCommand(_b) ;//wordless

  string _result2 = ffmpeg.RunCommand(_a) ;//error

  file class call ffmpeg :

  -file project demo error :
  https://drive.google.com/open?id=0B9dxSeLrFswjVmNGd1IzcUpncE0

  thank you and sorry if my english is the poor

• Mirrored Arabic Letters using TextClip Moviepy

  4 août 2020, par Sam

  I am trying to render the video which contains arabic letters. let's use مرحبا for the example. After video rendered the result is mirrored.

  


  background = mp.ColorClip(mobile_size, (255, 255, 255), duration=0.5) #float(audiolength.info.length)
text1 = mp.TextClip(english, fontsize=45, color=fcolor, font=Font, size= (mobile_size[0], 185), method = 'caption', align="south").set_duration(0.5) #float(audiolength.info.length)
text2 = mp.TextClip(formatChineseSentences(translated).encode("utf-8"), fontsize=45, color=fcolor2, font=Font, size= (mobile_size[0], 185), method = 'caption', align="north").set_duration(0.5) #float(audiolength.info.length)

clip1 = mp.CompositeVideoClip([background, text1.set_position(('center', "top")), text2.set_position(('center', "bottom"))])


  


  Expected Behavior

  


  

  


  Actual Behavior

  


  

  


  Steps to Reproduce the Problem

  


  Rendering TextClip with Arabic Characters. For this case we can use مرحبا.

  


  Specifications

  


  Python Version : Python 3.8.5
Moviepy Version : 1.0.3
Platform Name : Mac OS Catalina
Platform Version : 10.15.6