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• How to create a ffmpeg filter that zooms by a set value over a time while playing the video ?

  13 janvier 2023, par Highmastdon

  I'd like to create a zoom effect where I start at 1 * inputwidth and end with 1.1 * inputwidth over a set time.

  


  I tried using zoompan but it :

  


  

  • pauses the frame, zooms in over the amount of time specified, continues sound while zooming.

  


  • zooms to the top-left corner, instead of center.

  


  • leaves the frame smaller than it was before. Do I need to upscale afterwards ?

  


  


  $ ffmpeg -i in.mp4 -t 10 \
-vf "fps=60,zoompan=z='if(lte(it,2),it/2*0.1+1,1.1)':d=1,scale=iw:ih" out.mp4


  


  I tried using scale with crop, but then I get the error shown below. I assume this isn't to be as a function of time.

  


  $ ffmpeg -i in.mp4 -t 10 \
-vf "fps=60, scale='t/5*2*iw':-1, crop='iw/2*t/5':'ih/2*t/5'" out.mp4

Expressions with frame variables 'n', 't', 'pos' are not valid in init eval_mode.


  


  If there's an other tool besides ffmpeg, that would be fine, except it should not be a gui-only way.

  


• FFMPEG command playing the audios all at once

  14 décembre 2022, par Kaeden

  I want to play all the audios at a designated time frame using this command tho they all play at the beginning of the video here is the command

  


  ffmpeg -y -i ./temp/background.mp4 -itsoffset 1 -i ./temp/tts/0.mp3 -itsoffset 3 -i ./temp/tts/1.mp3 -itsoffset 4 -i ./temp/tts/10.mp3 -itsoffset 7 -i ./temp/tts/11.mp3 -itsoffset 8 -i ./temp/tts/12.mp3 -itsoffset 10 -i ./temp/tts/13.mp3 -itsoffset 12 -i ./temp/tts/14.mp3 -itsoffset 14 -i ./temp/tts/2.mp3 -itsoffset 15 -i ./temp/tts/3.mp3 -itsoffset 18 -i ./temp/tts/4.mp3 -itsoffset 20 -i ./temp/tts/5.mp3 -itsoffset 22 -i ./temp/tts/6.mp3 -itsoffset 23 -i ./temp/tts/7.mp3 -itsoffset 25 -i ./temp/tts/8.mp3 -itsoffset 27 -i ./temp/tts/9.mp3 -filter_complex amix=inputs=5[a] -map 0:v -map [a] -c:v copy -async 1 -c:a aac ./temp/withoutsubs.mp4


  


  I was expecting all the audios to play at their right time

  


• discord.py and ffmpeg : Play a sound effect while playing music

  26 juin 2022, par JPhusion

  I would like to play a sound effect while playing music in a vc using discord.py and ffmpeg. I know you cannot play more than one audio source at a time, so instead I am trying to pause the music, play the sound effect and continue the music.

  


  This is what I've come up with so far, but because I am playing the sound effect, the resume() method no longer works after the pause().

  


  @commands.command()
    async def sfx(self, ctx):
        try:
            voice = await ctx.author.voice.channel.connect()
        except:
            voice = ctx.guild.voice_client
        try:
            voice.pause()
            # voice.play(discord.FFmpegPCMAudio('./media/sfx/notification.mp3'))
        except:
            voice.pause()
            # voice.play(discord.FFmpegPCMAudio(executable=r"C:\Users\josh\Programming\Discord\ffmpeg\bin\ffmpeg.exe", source='./media/sfx/notification.mp3'))
        guild = self.client.get_guild(752756902525403156)
        member = guild.get_member(876292773639233596)
        print(member.activities[0].name)
        await asyncio.sleep(1)
        voice.resume()
        if member.activities[0].name == "Not playing music":
            await voice.disconnect()