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• How can I apply zoom in/out filter on specific frame in video using ffmpeg ?

  4 novembre 2019, par Axita Kathiriya

  I want to apply zoom filter on specific frame on video using ffmpeg.

  for example, I want to make a slideshow of 5 images and each image will take 4-5 seconds for slide. I want zoom in/out effect on each image. So, i want to apply this effect at that time when particular image stay for 4-5 seconds. Please see this video link. I want same result like this using ffmpeg : https://youtu.be/nNTiyRDhlRY please refer first two slides of this link.

• TypeError : source must be an AudioSource not FFmpegOpusAudio

  9 juin 2024, par salice

  async def play(ctx, *, link):
    try:
        voice_client = await ctx.author.voice.channel.connect()
        voice_clients[voice_client.guild.id] = voice_client
    except Exception as e:
        print(e)
    if 1==1:
        if youtube_base_url not in link:
            query_string = urllib.parse.urlencode({
                'search_query': link
            })

            content = urllib.request.urlopen(
                youtube_results_url + query_string
            )

            search_results = re.findall(r'/watch\?v=(.{11})', content.read().decode())

            link = youtube_watch_url + search_results[0]

        loop = asyncio.get_event_loop()
        data = await loop.run_in_executor(None, lambda: ytdl.extract_info(link, download=False))

        song = data['url']
        player = discord.FFmpegOpusAudio(song, **ffmpeg_options)

        voice_clients[ctx.guild.id].play(player, after=lambda e: asyncio.run_coroutine_threadsafe(play_next(ctx), bot.loop))


  


  ffmpeg installed and added in PATH
ffmpeg lib for python added

  


  I tried other variations of ffmpeg(like FFmpegPCMAudio) but this didn't solve the problem. I also tried to just copy-paste(Someone else's code that performs the same functions), which also did not give anything. I think the problem is not in the code.

  


  Traceback :

  


  Traceback (most recent call last):
  File "c:\Users\Saliceterik\AppData\Local\Programs\Python\Python310\lib\site-packages\disnake\ext\commands\core.py", line 173, in wrapped
    ret = await coro(*args, **kwargs)
  File "C:\Users\Saliceterik\Desktop\snackerbot\launch_serviceTyan_s-upd.py", line 122, in play
    voice_clients[ctx.guild.id].play(player, after=lambda e: asyncio.run_coroutine_threadsafe(play_next(ctx), bot.loop))    
  File "c:\Users\Saliceterik\AppData\Local\Programs\Python\Python310\lib\site-packages\disnake\voice_client.py", line 583, in play
    raise TypeError(f"source must be an AudioSource not {source.__class__.__name__}")
TypeError: source must be an AudioSource not FFmpegOpusAudio```


  


• Opencv linking to current version of ffmpeg only, Updating ffmpeg version breaks opencv library

  5 octobre 2019, par Amit

  I had manually compiled opencv ver3.2 library on mac system, which had been working fine till now. Recently it seems that i had updated the version for ffmpeg, which is managed by brew package manager, leading to breakage of opencv library looking for libavcodec.57.dylib.

  Upon looking into library path, i found that libavcodec.dylib is symlinked to libavcodec.58.dylib, which is the most probable cause to above problem.

  Now i have two options,
  
   Recompile opencv to link against the latest version of libavcodec
  
   Revert the version of libavcodec to 57

  I am looking for a solution in which opencv works independently of the version of libavcodec and should dynamically link with current installed version of library. I should only be recompiling opencv when it is essentially required, like change in API of libavcodec.