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• Returns wrong frame while seeking in FFMPEG Player

  5 février 2015, par user543

  I have implemented an audio player which supports all the formats using FFMPEG. But while seeking the audio, the application is getting the wrong frame at that target duration. Here is my code for the seek functionality.

           int64_t seekTime = av_rescale_q(seekValue * AV_TIME_BASE,
  
                      AV_TIME_BASE_Q,
  
                      fmt_ctx->streams[seekStreamIndex]->time_base);
  
  
  
              int64_t seekStreamDuration =
  
                      fmt_ctx->streams[seekStreamIndex]->duration;
  
  
  
              int flags = AVSEEK_FLAG_BACKWARD;
  
              if (seekTime > 0 && seekTime < seekStreamDuration)
  
                  flags |= AVSEEK_FLAG_ANY;
  
  
  
              int ret = av_seek_frame(fmt_ctx, seekStreamIndex, seek_target,
  
                      flags);
  
  
  
              if (ret < 0)
  
                  ret = av_seek_frame(fmt_ctx, seekStreamIndex, seekTime,
  
                          flags);
  
  
  
            avcodec_flush_buffers(dec_ctx);

  It is working fine for most of the songs.
  But some of the mp3 songs are getting the wrong timespan.

  For instance : If the song total duration is 2 minutes, if I play the song without seeking it works fine. But while playing, if we seek the song to some position, this will make the song ends with 2 mins and 10 seconds.

  I am getting this issue with only mp3 songs. I am using FFMPEG 2.1. The code for the seek functionality is working fine on FFMPEG 0.11.1.

  Please provide any information about this issue.

• "FFmpeg was not found, spotdl can't continue" even though its installed using sudo apt-get install spotdl + it works if ran from terminal

  23 juin 2022, par dank rainbow

  @bot.command()
async def getsong(ctx, *, songname):
    "get song in mp3 from song name"
    os.popen(f'spotdl {songname} -f "/home/pi/discordbot/output/{songname}.mp3"')
    await ctx.send(file=discord.File(fr'/home/pi/discordbot/output/{songname}.mp3'))


  


  ffmpeg installed with sudo-apt get. works if ran from terminal
how to fix ?

  


  figured it out my self.
working code if it benefits anyone :

  


  @bot.command()
async def getsong(ctx, *, songname):
    "get song in mp3 from song name"
    subprocess.Popen(f'spotdl -o "/home/pi/discordbot/output" --ffmpeg "/usr/bin/ffmpeg" {songname} --path-template "{songname}.mp3"', shell=True)
    await ctx.send(file=discord.File(fr'/home/pi/discordbot/output/{songname}.mp3'))


  


• How to convert an mp3 file to raw audio format using javascript

  4 octobre 2022, par Lord Bee

  I'm working on a project that involves song matching, so I am integrating with rapidApi's shazam endpoints. But the thing is, the song matching endpoint needs the audio snippet to be a base64 string of the audio in raw audio format. I know the API works. I downloaded a 3rd party application to do the conversion from mp3 to .raw, and converted it to base64 before making the request with it.

  


  Now, I need to integrate this flow programmatically. How do I convert an mp3 or any audio source really to a .raw file ? I've done a lot of searching but I can't find any solution.