Recherche avancée

Sur d’autres sites (8419)

• Mix Audio tracks with offset in SOX

  4 août 2012, par Laramie

  From ASP.Net, I am using FFMPEG to convert flv files on a Flash Media Server to wavs that I need to mix into a single MP3 file. I originally attempted this entirely with FFMPEG but eventually gave up on the mixing step because I don't believe it it possible to combine audio only tracks into a single result file. I would love to be wrong.

  I am now using FFMPEG to access the FLV files and extract the audio track to wav so that SOX can mix them. The problem is that I must offset one of the audio tracks by a few seconds so that they are synchronized. Each file is one half of a conversation between a student and a teacher. For example teacher.wav might need to begin 3.3 seconds after student.wav. I can only figure out how to mix the files with SOX where both tracks begin at the same time.

  My best attempt at this point is :

  ffmpeg -y -i rtmp://server/appName/instance/student.flv -ac 1 student.wav 
  
  ffmpeg -y -i rtmp://server/appName/instance/teacher.flv -ac 1 teacher.wav 
  
  
  
  sox -m student.wav teacher.wav combined.mp3 splice 3.3

  These tools (FFMEG/SoX) were chosen based on my best research, but are not required. Any working solution would allow an ASP.Net service to input the two FMS flvs and create a combined MP3 using open-source or free tools.

  EDIT :
  I was able to offset the files using the delay switch in SOX.

  sox -M student.wav teacher.wav combined.mp3 delay 2.8

  I'm leaving the question open in case someone has a better approach than the combined FFMPEG/SOX solution.

• avfilter/vf_framepack : Check and update frame_rate

  16 janvier 2015, par Michael Niedermayer

  avfilter/vf_framepack : Check and update frame_rate
  The frame_rate update was missing leaving the output frame rate
  
  wrong.
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavfilter/vf_framepack.c
  • [DH] tests/ref/fate/filter-framepack-frameseq

• Discord js music player bot suddenly leaves

  29 janvier 2024, par ImK

  So I made a music bot for discord js that uses discord player package. The command runs perfectly but in the middle song suddenly stops I tried searching everywhere nothing works and i think its an issue for ffmpeg but im not so sure

  


  bot.player = new Player(bot, {
    ytdlOptions: {
        quality: 'lowestaudio',
        highWaterMark: 1 >> 25
    },
})

const player = bot.player;

//play command 


bot.on('interactionCreate', async interaction =>{
    if(interaction.commandName === 'play') {

        const song = interaction.options.get('song').value;
        const res = await player.search(song, {
            searchEngine: QueryType.SPOTIFY_SONG
        });


        if (!res || !res.tracks.length) return interaction.reply({ content: `No results found ${interaction.member}... try again ? ❌`, ephemeral: true });

        const queue = await player.createQueue(interaction.guild)

        if (!queue.connection) await queue.connect(interaction.member.voice.channel);


        await interaction.channel.send({ content:`Loading your ${res.playlist ? 'playlist' : 'track'}... 🎧`});

        const track = await res.tracks[0]

        console.log(track)
        if(!track)  return interaction.channel.send({content: 'No song found'});

        queue.addTrack(track)

        queue.play();

    }
})


  


  After leaving the channel, other commands and bot work fine