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• avformat/hlsenc : Add deinit function

  15 décembre 2019, par Andreas Rheinhardt

  avformat/hlsenc : Add deinit function
  This fixes memleaks in instances such as :
  
  a) When an allocation fails at one of the two places in hls_init() where
  
  the error is returned immediately without goto fail first.
  
  b) When an error happens when writing the header.
  
  c) When an allocation fails at one of the three places in
  
  hls_write_trailer() where the error is returned immediately without goto
  
  fail first.
  
  d) When one decides not to write the trailer at all (e.g. because of
  
  errors when writing packets).
  
  Furthermore, it removes code duplication and allows to return
  
  immediately, without goto fail first.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavformat/hlsenc.c

• Using fluen-ffmpeg to overlay video on a video (at top left or right)

  18 juin 2021, par Ruthwik Reddy

  So the title should make sense I want to overlay one video on another.
It's getting confused at so many places with concatenating video it's not that, I want to do something like this :


  


  I am able to do this in normal ffmpeg using this command

  

  


  ffmpeg -i VideoB.mp4 -i VideoA.mp4 -map 0:0 -map 1:1 -vf "movie=VideoA.mp4, scale=400:-1 [inner]; [in][inner] overlay=0:0 [out]" VideoAinsideVideoBsoundA.mp4


  


  I'm having trouble writing this in fluent-ffmpeg going through StackOverflow I found something like this but the issue here is it's treating both videos separately but I want to overlay one on another.
This is the code which places videos side by side there is extra space as padding if I try to mess with sides.

  


  ffmpeg()
   .input("./videoA.mp4")
   .input("./videoB.mp4")
   .complexFilter([
     "[0:v]scale=300:300[0scaled]",
     "[1:v]scale=300:300[1scaled]",
     "[0scaled]pad=600:300[0padded]",
     "[0padded][1scaled]overlay=shortest=1:x=300[output]",
   ])
   .outputOptions(["-map [output]"])
   .output("./out.mp4")
   .on("error", (err) => {
     console.log(err.message);
   })
   .on("end", () => {
     console.log("success");
   })
   .run()


  


  Can someone guide me here thank you.

  


• Handling multiple line subtitles of Right aligned languages(arabic) in Moviepy

  24 décembre 2023, par Stanger Danger

  I am trying to add Arabic subtitles on a video using Moviepy. The issue I'm facing is related to alignment of Arabic text, as it progresses from right to left, instead of left to right in English language.

  


  

  


  As text length gets more and more, Moviepy trims the words from both ends, this issue can be resolved if we break the text into multiple lines. This works well for English language but for Arabic, the first line becomes the last line because of the (Right-Left)alignment.

  


  

  


  The text on Second line should come first on the first line at the start, while end chuck of first text towards the left corner should render on the second line, but it is getting rendered as English language, Left to right alignment.

  


  Here is my code :

  


  def add_subtitles(address_subtitles, address_video):
  video = VideoFileClip(address_video)
  generator = lambda txt: TextClip(txt, font='Arial', fontsize=22, color='black', stroke_width=2, method='caption', align='south', size=video.size)
  subtitles = SubtitlesClip(address_subtitles, generator)
  #print()

  result = CompositeVideoClip([video, subtitles.set_pos(('center','bottom'))])
  result.write_videofile("arabic_with_hardcoded_subtitles_3.mp4", fps=video.fps, temp_audiofile="temp-audio.m4a", remove_temp=True, codec="libx264"
  , audio_codec="aac")