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• ffmpeg with cuda and concat videos [closed]

  15 septembre 2024, par Petr Šimůnek

  I have a ffmpeg command with nvidia hw support that I want to join two videos :

  


  /home/videotest/ffmpeg-dev/ffmpeg -benchmark -hide_banner -loglevel warning -y -hwaccel_device 0 -hwaccel cuda -hwaccel_output_format cuda -i /mnt/video-storage/test/cuda/surfing/intermediate1.mp4 -i /mnt/video-storage/test/cuda/surfing/intermediate2. mp4 -filter_complex 'hwupload_cuda,[0:v:0][0:a:0][1:v:0][1:a:0]concat=n=2:v=1:a=1 [outv] [outa]' -map [outv] -map [outa] -pix_fmt yuv420p -c:v h264_nvenc -preset p6 -profile: v high -force_key_frames 'expr:gte(t,n_forced*5)' -bf 0 -movflags +faststart -b:v 3000k -maxrate 4000k /mnt/video-storage/test/cuda/surfing/game.mp4

  


  I get an error message after starting :

  


  Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scale_0' [fc#0 @ 0x61ae2b37a1c0] Error reinitializing filters!

  


  I can't figure out how to remove it. Can you help me ? Thank you.

  


  If I use nvdec/nvenc instead of cuda, this error does not appear and the video is created fine.

  


• Making my Discord Bot automatically play music from WAV on loop

  5 décembre 2022, par Mativ9

  So I was trying to make a Discord Bot in Python, which would atomatically join a voice channel and play my own music from a list in a loop. So far it's joining the channel, shuffling the list so the music is on random, but when I try to write a code so after one song it will play the next one it crushes and doesn't play anything (tho it's joining the channel)

  


  import discord
import random
from discord.ext import commands
from discord import FFmpegPCMAudio

#playlist as a list
queue = [FFmpegPCMAudio('Iceland1.wav'), FFmpegPCMAudio('Iceland2.wav'), FFmpegPCMAudio('Iceland3.wav'), FFmpegPCMAudio('Iceland4.wav'),
         FFmpegPCMAudio('Iceland5.wav'), FFmpegPCMAudio('Iceland6.wav'), FFmpegPCMAudio('Iceland7.wav'), FFmpegPCMAudio('Iceland8.wav'),
         FFmpegPCMAudio('Iceland9.wav'), FFmpegPCMAudio('Iceland10.wav'), FFmpegPCMAudio('Norway1.wav'), FFmpegPCMAudio('Norway2.wav'),
         FFmpegPCMAudio('Norway3.wav'), FFmpegPCMAudio('Norway4.wav'), FFmpegPCMAudio('Norway5.wav'), FFmpegPCMAudio('Norway6.wav'),
         FFmpegPCMAudio('Norway7.wav'), FFmpegPCMAudio('Norway8.wav'), FFmpegPCMAudio('Norway9.wav'), FFmpegPCMAudio('Norway10.wav'),
         FFmpegPCMAudio('Norway11.wav'), FFmpegPCMAudio('Presents1.wav'), FFmpegPCMAudio('Presents2.wav'), FFmpegPCMAudio('Presents3.wav'),
         FFmpegPCMAudio('Presents4.wav'), FFmpegPCMAudio('Presents5.wav'), FFmpegPCMAudio('Presents6.wav'), FFmpegPCMAudio('Presents7.wav'),
         FFmpegPCMAudio('Presents8.wav'), FFmpegPCMAudio('Presents9.wav'), FFmpegPCMAudio('Presents10.wav'), FFmpegPCMAudio('Autumn1.wav'),
         FFmpegPCMAudio('Autumn2.wav'), FFmpegPCMAudio('Autumn3.wav'), FFmpegPCMAudio('Autumn4.wav'), FFmpegPCMAudio('Autumn5.wav'),
         FFmpegPCMAudio('Autumn6.wav'), FFmpegPCMAudio('Autumn7.wav'), FFmpegPCMAudio('Autumn8.wav'), FFmpegPCMAudio('Covers1.wav'),
         FFmpegPCMAudio('Covers2.wav'), FFmpegPCMAudio('Covers3.wav'), FFmpegPCMAudio('Covers4.wav'), FFmpegPCMAudio('Covers5.wav'),
         FFmpegPCMAudio('Covers6.wav'), FFmpegPCMAudio('Covers7.wav'), FFmpegPCMAudio('Covers8.wav'), FFmpegPCMAudio('Covers9.wav'),
         FFmpegPCMAudio('Covers10.wav'), FFmpegPCMAudio('Covers11.wav'), FFmpegPCMAudio('Covers12.wav')]

intents = discord.Intents.default()
intents.message_content = True
client = commands.Bot(command_prefix='>', intents=intents)

@client.event
async def on_ready():
    global voice
    print("The Matt Bot is ready")
    print("--------------------------")
    await client.change_presence(activity=discord.Game('Matt Krupa')) #makes my bot play Matt Krupa
    channel = client.get_channel(thechannelid) #geting channel ID
    voice = await channel.connect() #connecting to channel
    random.shuffle(queue) #randomazing the playlist
    def after_song(): #moving the first song to the end so its on loop, and playling the next one
        queue.append(queue[0])
        del queue[0]
        player = await voice.play(queue[0], after=await after_song())
    player = await voice.play(queue[0], after=await after_song()) #plays song from the playlist, after the song doing the after_song() function

client.run(mytokenidontwanttoshowitsry)


  


  I wanted it to play all the songs on the infinite loop, i can't find how to correctly detect the end of a song...

  


• How can I render frames decoded by FFmpeg using hardware decoding with D3D11 ?

  14 juin 2024, par mercuric taylor

  I have completed the process of decoding a video frame using FFmpeg. The format of the decoded frame is AV_PIX_FMT_NV12. Now, I want to render this frame to the screen using D3D11. My questions are :

  


  

  1. What is the equivalent concept in D3D11 for a decoded frame ? Is it a texture ?

  


  2. I have seen many solutions that convert NV12 data to RGB, but it seems that DX11 does not require this conversion anymore.

  


  3. I just want to display this frame, and since my frame is on the GPU, is there a more convenient way to render directly on the GPU without copying ?

  


  


  Please forgive my not-so-good English. Can anyone provide a reference example ?

  


  I have already referenced this open-source project. texthttps://github.com/balapradeepswork/D3D11NV12Rendering/tree/master/D3D11NV12Rendering
But I don't understand it very well.
Since I don't use dx11 to make game, just for show video, I am looking forward for a more easy solution. It has worried me for weeks, can anyone give me some advice(even good tutorial, some I can found is too old). Thanks sincerely !