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• swscale/aarch64 : use multiply accumulate and increase vector factor to 4

  17 novembre 2019, par Sebastian Pop

  swscale/aarch64 : use multiply accumulate and increase vector factor to 4
  This patch implements ff_hscale_8_to_15_neon with NEON fused multiply accumulate
  
  and bumps the vectorization factor from 2 to 4.
  
  The speedup is of 25% on Graviton1 A1 instances based on A-72 cpus :
  $ ffmpeg -nostats -f lavfi -i testsrc2=4k:d=2 -vf bench=start,scale=1024x1024,bench=stop -f null -
  
  before : t:0.040303 avg:0.040287 max:0.040371 min:0.039214
  
  after :  t:0.032168 avg:0.032215 max:0.033081 min:0.032146
  The speedup is of 39% on Graviton2 m6g instances based on Neoverse-N1 cpus :
  
  $ ffmpeg -nostats -f lavfi -i testsrc2=4k:d=2 -vf bench=start,scale=1024x1024,bench=stop -f null -
  
  before : t:0.019446 avg:0.019423 max:0.019493 min:0.019181
  
  after :  t:0.014015 avg:0.014096 max:0.015018 min:0.013971
  Tested with `make check` on aarch64-linux.
  Signed-off-by : Sebastian Pop <spop@amazon.com>
  
  Reviewed-by : Jean-Baptiste Kempf <jb@videolan.org>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libswscale/aarch64/hscale.S

• FFmpeg transcode GIF into Mp4 and Mp4 to AVI using GPU

  9 octobre 2023, par Cristian

  I'm trying to convert GIF animated to mp4 and mp4 to AVI with FFmpeg.

  


  I started to use just the CPU, but I have to process millions of GIFs/mp4 content pieces. So, I started to have a lot of errors processing them, and it ended as a bottleneck. Therefore, I'm trying to use GPU to process the videos.

  


  Converting GIF to mp4 with CPU, I run the following command :

  


  ffmpeg -i animated.gif -movflags faststart -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" video.mp4


  


  Using the GPU I'm trying the following :

  


  ffmpeg
  -y
  -hwaccel nvdec
  -hwaccel_output_format cuda
  -i gifInputPath
  -threads 1
  -filter_threads 1
  -c:v h264_nvenc
  -vf hwupload_cuda,scale_cuda=-2:320:240:format=yuv420p
  -gpu 0
   mp4VideoPath


  


  The above command generates an exit status 1.

  


  The following is the dmesg command log

  


  Converting mp4 videos to AVI videos I'm running the following command

  


  ffmpeg
-i videoInputPath
-vcodec rawvideo
-pix_fmt yuv420p
-acodec pcm_s16le
-ar 44100
-ac 2
-s 320x240
-r 4
-f avi
aviOutputVideoPath


  


  For GPU I tried :

  


  ffmpeg
 -y
 -hwaccel cuda
 -hwaccel_output_format cuda
 -i videoInputPath
 -threads 1
 -filter_threads 1
 -c:a pcm_s16le
 -ac 2
 -ar 44100
 -c:v h264_nvenc
 -vf hwupload_cudascale_cuda=-2:320:240:format=yuv420p
 -r 4
 -f avi
 -gpu 0
 aviOutputVideoPath


  


  The following is the dmseg output is log

  


  


  1. What should be the best command for converting the GIF into Mp4 and Mp4 into AVI based on CPU configuration using the GPU(Amazon Nvidia t4) for best performance, low CPU, and moderated GPU consumption ?

     


  


  2. What are the best suggestions to Process these content pieces concurrently using GPU ?

     


  


  


  Note : I'm using Golang to execute the FFmpeg commands.

  


• My discord music bot is not playing the entire music

  21 décembre 2024, par james12

  My discord music bot based on discord.py, yt_dlp and ffmpeg is not working.
I downloaded every module that is required and added environmental variables.
But, my discord bot is not working properly.
The bot plays the music properly at first, but the music ends before the song finishes.

  


  Full code below :

  


  import discord
from discord.ext import commands
import yt_dlp

app = commands.Bot(command_prefix='!', intents=discord.Intents.all())
ydl_opts = {
    'format': 'bestaudio/best',
    'extractaudio': True,
    'audioformat': 'mp3',
    'outtmpl': 'downloads/%(title)s.%(ext)s',
    'quiet': True,
}

@app.event
async def on_ready():
    print('Done')
    await app.change_presence(status=discord.Status.online, activity=None)

@app.command()
async def play(ctx, *, search: str):
    channel = ctx.author.voice.channel
    voice_client = discord.utils.get(app.voice_clients, guild=ctx.guild)

    if not voice_client:
        voice_client = await channel.connect()

    with yt_dlp.YoutubeDL(ydl_opts) as ydl:
        info = ydl.extract_info(f"ytsearch:{search}", download=False)['entries'][0]
        url = info['url']
        title = info['title']

    # 음악 재생
    voice_client.play(discord.FFmpegPCMAudio(url, executable="ffmpeg"), after=lambda e: print("재생 완료"))
    await ctx.send(f"{ctx.author.mention}님이 요청하신 {title} 노래 재생 중")

@app.command()
async def stop(ctx):
    voice_client = discord.utils.get(app.voice_clients, guild=ctx.guild)
    if voice_client and voice_client.is_playing():
        voice_client.stop()
        await voice_client.disconnect()
    
app.run('token')


  


  I tried to add options in FFmpeg like this : options="-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5"
but it doesn't work.
I also added extra yt-dlp options.
I hope the bot properly plays the full version of music from youtube in discord.