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• Rewind problem after convert *.mp3 to *.aac

  29 août 2020, par Vitaly Vesyolko

  I need to prepare audio files in MP3 format for sending via WhatsApp to Android and iOS devices with the ability to pause and mainly rewind.

  


  To do this, I use the ffmpeg utility on my notebook with Linux Ubuntu installed. Conversion example is described in detail here FFmpeg command to convert MP3 to AAC.

  


  As a result, I get AAC audio files that cannot be rewound in the WhatsApp player. I tried to set different options that are responsible for the output sound quality, size, and so on. But the ability to rewind in the WhatsApp player disappears.

  


  Rewind - is to slide by finger the circular slider in the WhatsApp audio player widget.

  


  I also used the following online services :

  


  

  1. ONLINE-CONVERT

  


  2. Convertio

  


  3. ZAMZAR.

  


  


  One of the first two in some cases saves files with the ability to rewind, but in most cases - without it. And it very likely depends on the original file size. This is a hypothesis - if the size is small, then it is possible to rewind the audio file in the WhatsApp player. In any case, this method is not universal.

  


  Please provide a universal solution to the task at hand - a CLI utility or a tool that would convert MP3 to AAC with the ability to rewind in the WhatsApp player. And please indicate which characteristics are responsible for the absence / presence of such functionality.

  


• lavf/async : Fix ring_write return value

  29 septembre 2022, par Guangyu Sun

  lavf/async : Fix ring_write return value
  This fixes a regression from commit 36117968ad.
  wrapped_url_read() used to be able to return positive number from
  
  ffurl_read(). It relies on the result to check if EOF is reached in
  
  async_buffer_task().
  But FIFO callbacks must return 0 on success. This should be handled
  
  in ring_write() instead.
  Test case :
  
    ffmpeg -f lavfi -i testsrc -t 1 test.mp4
  
    ffmpeg -i async:test.mp4
  Signed-off-by : Guangyu Sun <gsun@roblox.com>
  
  Signed-off-by : Anton Khirnov <anton@khirnov.net>
  

  • [DH] libavformat/async.c

• Requested output format 's16le' is not a suitable output format in discord.py

  12 mars 2021, par parhammed

  i wanna play hello.mp3 in voice but i get a error :

  


  [NULL @ 000001e7f6945c80] Requested output format 's16le' is not a suitable output format
pipe:1: Invalid argument


  


  code :

  


  @Bot.command()
@commands.cooldown(1, 5, commands.BucketType.guild)
async def play(ctx, query):

    if not ctx.author.voice: # if author was not in voice
        return

    channel: discord.VoiceChannel = ctx.author.voice.channel
    cls: discord.VoiceClient = await channel.connect() # client of guild

    if not cls.is_playing():
        audio_source = discord.FFmpegPCMAudio(source="hello.mp3")
        cls.play(source=audio_source, after=None)


  


  I searched a lot about this error and did not find any results. Please help me.