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• Convert a Video that it can show with preview in telegram via bot api

  7 avril 2016, par siavashg

  I Have a video and i want to send it with telegram bot api by pytelegrambotapi library so i write this code for send video by bot :

  import telebot
  
  
  
  bot = telebot.TeleBot("TOKEN")
  
  
  
  @bot.message_handler(commands=['start'])
  
  def send_welcome(message):
  
      video = open('1.mp4', 'rb')
  
      bot.send_video(message.chat.id,video, duration=)
  
  
  
  bot.polling(none_stop=True)

  but I send a video and it has been sent successfully but telegram show black screen for my video like this picture
  Telegram With Black Scrreen preview of video.
  I think this is about the encoding . I found this site for encoding and it said the videos in telegram have specific format.

  Conditions to trim a video

  • Audio codec = mp4a
  • Video codec = supported by the device
  • Any side of the video more than 640px
  • Or if a side is less than 640px but video codec is h264

  Conditions to compress a video

  • Any side of the video over 640px
  • Audio codec = mp4a
  • A video encoder different than :
  • OMX.google.h264.encoder
  • OMX.ST.VFM.H264Enc
  • OMX.Exynos.avc.enc
  • OMX.MARVELL.VIDEO.HW.CODA7542ENCODER
  • OMX.MARVELL.VIDEO.H264ENCODER

  How can I send Video with blur image preview of that in telegram with telegram bot api ?

• Send video as Buffer to Telegram

  28 décembre 2022, par AMIR NYN

  Hello to all !
I use telegraf package for my telegram bot. I have a simple command that, when sent to my Telegram bot, combines a YouTube video with its separate audio file through the ffmpeg package in child_process channels and dumps the output into an array of buffers. When the process is finished, the final file is sent to Telegram through the sendVideo method :

  


  const tracker = {
                    start: Date.now(),
                    audio: {downloaded: 0, total: Infinity},
                    video: {downloaded: 0, total: Infinity},
                };

                const video = ytdl(id, {filter: 'videoonly', quality: String(itag)})
                    .on('progress', (_: any, downloaded: any, total: any) => {
                        tracker.video = {downloaded, total};
                    });
                const audio = ytdl(id, {filter: 'audioonly', quality: 'highestaudio'})
                    .on('progress', (_: any, downloaded: any, total: any) => {
                        tracker.audio = {downloaded, total};
                    });

                const ffmpegProcess = cp.spawn(ffmpeg, [
                    // Remove ffmpeg's console spamming
                    '-loglevel', '0', '-hide_banner',
                    '-i', 'pipe:3',
                    '-i', 'pipe:4',
                    '-c:v', 'libx265', '-x265-params', 'log-level=0',
                    '-c:a', 'flac',
                    // Define output container
                    '-f', 'matroska', 'pipe:5',
                ], {
                    windowsHide: true,
                    stdio: [
                        /* Standard: stdin, stdout, stderr */
                        'inherit', 'inherit', 'inherit',
                        /* Custom: pipe:3, pipe:4, pipe:5 */
                        'pipe', 'pipe', 'pipe',
                    ],
                });

                let chunks: any = [], fileSize = 0;

                audio.pipe(ffmpegProcess.stdio[3]);
                video.pipe(ffmpegProcess.stdio[4]);

                ffmpegProcess.stdio[5].on('data', (chunk: string | any[]) => {

                    chunks.push(chunk);
                    fileSize += chunk.length;

                }).on('end', () => {

                    const buff = Buffer.concat(chunks);

                    const { Input } = require('telegraf'); 

                    await ctx.sendVideo(
                    Input.fromBuffer(buff), 'File name'
                  );

                });

            }


  


  My problem is that when the file is sent, the video time is not available until it is completely downloaded and is 0, and inside the Telegram web version, the file is not downloaded completely and it gets stuck on "Buffering..." (on Android, without The problem is downloaded, but it still has no time). I think this problem is due to incomplete metadata in Buffer. Can anyone help me ?

  


• ffmpeg fails to broadcast rtmp telegram video

  11 janvier 2023, par AdelinaIbragimova

  I am trying to transfer an mp4 file to Telegram RTMP live using the following command :

  


  $cmd = "ffmpeg -i video.mp4 -c:v libx264 -c:a aac -b:v 2000k -f flv " . $url . $key . "";
exec($cmd, $output, $return);


  


  $url and $key values obtained using MadelineProto for the channel. No picture or sound appears.

  


  Creating a broadcast in the channel and receiving rtmp data accordingly. Everything is clear here

  


  $Updates = $MadelineProto->phone->createGroupCall(peer: $channel, title: $title);
$phone_GroupCallStreamRtmpUrl = $MadelineProto->phone->getGroupCallStreamRtmpUrl(peer: $channel, revoke: 1 );
$url = $phone_GroupCallStreamRtmpUrl['url'];
$key = $phone_GroupCallStreamRtmpUrl['key'];


  


  Perhaps something needs to be specified in the ffmpeg values. Tell me please