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• add watermark to video and image with input and output array bytes

  7 octobre 2023, par Josivan

  I'm trying to add watermark to images and videos using ffmpeg. My files are stored on AWS S3, so they are byte arrays ([]byte).

  


  I need my input and output to be in a byte array and not saved to disk.

  


  I tried something like the code and it didn't work :

  


      buffFile := bytes.NewBuffer(file)
    out := &bytes.Buffer{}
    overlay := ffmpeg.Input("pipe:", ffmpeg.KwArgs{}).Filter("scale", ffmpeg.Args{"64:-1"}).WithInput(buffWatermark)
    err = ffmpeg.Filter(
        []*ffmpeg.Stream{
            ffmpeg.Input("pipe:", ffmpeg.KwArgs{}).WithInput(buffFile),
            overlay,
        }, "overlay", ffmpeg.Args{"10:10"}, ffmpeg.KwArgs{"enable": "gte(t,1)"}).
        Output("pipe:", ffmpeg.KwArgs{}).WithOutput(out).OverWriteOutput().ErrorToStdOut().Run()


  


• Can we provide a raw stream of microphone data Unit8List as a Input to ffmpeg and save the output file as .wav or .mp3

  21 juillet 2023, par Uday

  The goal is to listen to a live microphone stream (don't want to store it locally)and try to pass it to the RTSP server or to a .mp3 or .wav file locally.

  


  FFmpeg lib :ffmpeg_kit_flutter

  


  Mic Stream lib : https://pub.dev/packages/mic_stream

  


   stream = await MicStream.microphone(
        audioSource: AudioSource.DEFAULT,
        sampleRate: 44100,
        channelConfig: ChannelConfig.CHANNEL_IN_STEREO,
        audioFormat: AudioFormat.ENCODING_PCM_16BIT);

listener = stream!.listen((recordedData) async {
  await processData(recordedData);
});


  


  And in Process data, I want to convert this raw Unit8List data to .mp3 or transmit it to rtsp server live.

  


  any of the commands i want to execute

  


  Future<void> processData(Uint8List data) async {&#xA;//var command = &#x27;-i "$data" -f rtsp -rtsp_transport tcp -y "$RtspUrl"&#x27;;&#xA;&#xA;&#xA;//var command = &#x27;-i "$data" "/storage/emulated/0/Download/androidvideo.mp3"&#x27;;&#xA;&#xA;FFmpegKit.execute(command).then((session) async {&#xA;  final returnCode = await session.getReturnCode();&#xA;  final logs = await session.getLogs();&#xA;  for (var element in logs) {&#xA;    print(&#x27;logs:${element.getMessage()}&#x27;);&#xA;  }&#xA;  if (ReturnCode.isSuccess(returnCode)) {&#xA;    print(&#x27;Command execution completed successfully.&#x27;);&#xA;  } else if (ReturnCode.isCancel(returnCode)) {&#xA;    print(&#x27;Command execution completed CANCEL.&#x27;);&#xA;    listener.cancel();&#xA;  } else {&#xA;    print(&#x27;Command execution completed ERROR.&#x27;);&#xA;    listener.cancel();&#xA;  }&#xA;});&#xA;}&#xA;</void>

  


• Python : FFmpeg Input/output error using discord.py

  29 mai 2023, par PeeblYweeb

  here is my code :

  


     async def direct(self, interaction: discord.Interaction, link: str):
        voice_client = get(self.bot.voice_clients, guild=interaction.guild)
        if voice_client is None:
            return await interaction.response.send_message("❌ Connect to a channel first.")

        await interaction.response.send_message("Using direct link.")
        voice_client.play(discord.FFmpegPCMAudio(link))
        return


  


  here is my error :

  


  [tls @ 0x557c73a19d00] Error in the pull function.
https://cdn.discordapp.com/attachments/1109998398150545410/1112473248505004142/portradio-_1_.ogg: Input/output error
2023-05-28 13:29:11 INFO     discord.player ffmpeg process 1458408 successfully terminated with return code of 0.


  


  this happens usually around half-way through whatever im playing consistently

  


  i've tried setting arguments like :

  


  ffmpeg_options = {'options': '-vn -dn -sn -ignore_unknown -fflags +discardcorrupt'}


  


  from this other post
’corrupt input packet in stream 1’ error in FFMPEG
which fixed the error corrupt input packet but im still having trouble any ideas ?

  


  goal is to get the audio playing to discord without having to store the file locally then playing it from there then discarding it after.