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• aiff : add support for XA ADPCM

  3 janvier 2018, par Misty De Meo

  aiff : add support for XA ADPCM
  Certain AIFF files encode XA ADPCM compressed audio using a chunk
  
  with the tag `APCM`. Aside from this custom chunk type, they're
  
  otherwise standard AIFF files. I've only observed these files in the
  
  Sega Saturn game Sonic Jam so far.
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/aiffdec.c

• Can I get pictures/stills/photos from inside a container file from a CD-I disc ?

  8 décembre 2017, par user9047197

  I have ffmpeg setup.

  Is there a way to extract pictures/stills/photos (etc) from a container (file) that’s from an old CD-I game that I have.

  I don’t want to extract the audio nor video. And I don’t want frames from the videos either.

  I want the bitmaps (etc) from INSIDE that container file.

  I know my Windows 8.1 PC can’t read inside that container file - so I’m hoping there’s a way to extract all the files (I want) instead using ffmpeg.

  (IsoBuster only gives the audio and video so I know already about IsoBuster.)

  I think there are no individual headers for the pictures/stills/photos, etc.

  Here’s what ExifTool decoded the file as :

  ExifTool Version Number (10.68) 
  
  File Name (green.3t) 
  
  File Size (610 MB) 
  
  File Permissions (rw-rw-rw-) 
  
  File Type (MPEG) 
  
  File Type Extension (mpg) 
  
  MIME Type (video/mpeg) 
  
  MPEG Audio Version (1) 
  
  Audio Layer (2) 
  
  Audio Bitrate (80 kbps) 
  
  Sample Rate (44100) 
  
  Channel Mode (Single Channel) 
  
  Mode Extension (Bands 4-31)
  
  Copyright Flag (False) 
  
  Original Media (False) 
  
  Emphasis (None) 
  
  Image Width (368)
  
  Image Height (272) 
  
  Aspect Ratio (1.0695) 
  
  Frame Rate (25 fps) 
  
  Video Bitrate (1.29 Mbps) 
  
  Duration (1:02:12 approx) 
  
  Image Size (368x272) 
  
  Megapixels (0.100) 

  Thank you for reading and - help !! :D

• Is there a way to use youtube-dl in async

  8 octobre 2024, par Stam Kaly

  I have an application where I use zmq with asyncio to communicate with the clients who have the ability to download a video with youtube-dl to the server. I tried adding await to youtube_dl's download function but it gave me an error since it was not a coroutine. My code right now is simply looking like this :

  



  import asyncio
import youtube_dl


async def networking_stuff():
    download = True
    while True:
        if download:
            print("Received a request for download")
            await youtube_to_mp3("https://www.youtube.com/watch?v=u9WgtlgGAgs")
            download = False
        print("Working..")
        await asyncio.sleep(2)


async def youtube_to_mp3(url):
    ydl_opts = {
        'format': 'bestaudio/best',
        'postprocessors': [{
            'key': 'FFmpegExtractAudio',
            'preferredcodec': 'mp3',
            'preferredquality': '192',
        }]
    }

    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        ydl.download([url])


loop = asyncio.get_event_loop()
loop.create_task(networking_stuff())
loop.run_forever()


  



  which gives the following output :

  



  Received a request for download
[youtube] u9WgtlgGAgs: Downloading webpage
[youtube] u9WgtlgGAgs: Downloading video info webpage
[youtube] u9WgtlgGAgs: Extracting video information
[youtube] u9WgtlgGAgs: Downloading MPD manifest
[download] Destination: The Cardigans - My Favourite Game “Stone Version”-u9WgtlgGAgs.webm
[download] 100% of 4.20MiB in 00:03
[ffmpeg] Destination: The Cardigans - My Favourite Game “Stone Version”-u9WgtlgGAgs.mp3
Deleting original file The Cardigans - My Favourite Game “Stone Version”-u9WgtlgGAgs.webm (pass -k to keep)
Working..
Working..
....
Working..
Working..


  



  whereas I would expect the Working.. message to be printed in between youtube-dl's messages as well. Am I missing something here or is this impossible with async/await ? Is ffmpeg blocking ? If so, can I run the download in async without converting to mp3 or is using threads the only way ?