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• FFMPEG color key filter applied, output to a transparent HEVC mov file, speed is different

  2 mars 2023, par Patrick Vellia

  I have an original recording that has the following ffprobe output :

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
  Metadata:
    major_brand     : mp41
    minor_version   : 538120216
    compatible_brands: mp41
    creation_time   : 2023-02-28T19:06:41.000000Z
    firmware        : H21.01.01.50.00
  Duration: 00:00:08.15, start: 0.000000, bitrate: 60160 kb/s
  Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuvj420p(pc, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 59891 kb/s, 119.88 fps, 119.88 tbr, 120k tbn, 119.88 tbc (default)
    Metadata:
      creation_time   : 2023-02-28T19:06:41.000000Z
      handler_name    : GoPro H.265
      vendor_id       : [0][0][0][0]
      encoder         : GoPro H.265 encoder
      timecode        : 19:05:32:105
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
    Metadata:
      creation_time   : 2023-02-28T19:06:41.000000Z
      handler_name    : GoPro AAC  
      vendor_id       : [0][0][0][0]
      timecode        : 19:05:32:105
  Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
    Metadata:
      creation_time   : 2023-02-28T19:06:41.000000Z
      handler_name    : GoPro TCD  
      timecode        : 19:05:32:105
  Stream #0:3(eng): Data: bin_data (gpmd / 0x646D7067), 76 kb/s (default)
    Metadata:
      creation_time   : 2023-02-28T19:06:41.000000Z
      handler_name    : GoPro MET  
Unsupported codec with id 0 for input stream 2
Unsupported codec with id 100359 for input stream 3


  


  This video is chroma keyed, so I ran the following command the key out the green and export it to a HEVC mov container (the Apple HEVC supports alpha channel via the videotoolbox codec) :

  


  ffmpeg -i test.mp4 -vf colorkey=0x00b140:0.3:0.1 -vcodec hevc_videotoolbox -alpha_quality 0.5 -tag:v hvc1 output1.mov


  


  which results in this ffprobe :

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output1.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 512
    compatible_brands: qt  
    encoder         : Lavf58.76.100
  Duration: 00:00:08.15, start: 0.000000, bitrate: 366946 kb/s
  Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, gbr/bt709/bt709, progressive), 3840x2160 [SAR 1:1 DAR 16:9], 367188 kb/s, 119.88 fps, 119.88 tbr, 120k tbn, 120k tbc (default)
    Metadata:
      handler_name    : GoPro H.265
      vendor_id       : FFMP
      encoder         : Lavc58.134.100 hevc_videotoolbo
      timecode        : 19:05:32:105
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 118 kb/s (default)
    Metadata:
      handler_name    : GoPro AAC  
      vendor_id       : [0][0][0][0]
  Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s
    Metadata:
      handler_name    : GoPro H.265
      timecode        : 19:05:32:105
Unsupported codec with id 0 for input stream 2


  


  When the play the original video inside a web browser, it will play normally. As in, the video doesn't play in slo-mo but at "normal speed" which is what I actually want. User can slow it down and still have the frames necessary to keep the clarity when desired.

  


  However, when I play the second video, it is unnaturally slow even at 2x the speed.

  


  The only difference I can see above is that the export didn't include the second data stream (input 3).

  


  This was recorded on a GoPro Hero 10. I am using FFMPEG 4.6.

  


  Any help would be appreciated to fine tune the command.

  


• /bin/sh : ffmpeg : command not found while merge audio with with using ffmpeg aws lamda [duplicate]

  1er mai 2023, par bhavesh kaila

  I am trying to merge audio with video using the below command in AWS lambda using Python but the getting and below error.

  


  ffmpeg Command

  


  cmd = 'ffmpeg  -stream_loop -1 -i mayur.mp4 -i audio.mp3 -shortest -map 0:v:0 -map 1:a:0 -y out/output.mp4'
subprocess.call(cmd, shell=True) 


  


  Aws Lambda Error

  


  2023-05-01T16:08:18.591+05:30   INIT_START Runtime Version: python:3.10.v2 Runtime Version ARN: arn:aws:lambda:eu-north-1::runtime:7764dc7f3ff1fc45718f596be4cd03d7bca223f0586f3bfa5fe6584d6af81cd8

2023-05-01T16:08:19.631+05:30   START RequestId: 4557a174-e12c-4924-971a-ef8f852b106b Version: $LATEST

2023-05-01T16:08:22.286+05:30

Copy
/bin/sh: ffmpeg: command not found
/bin/sh: ffmpeg: command not found

2023-05-01T16:08:23.926+05:30   [ERROR] FileNotFoundError: [Errno 2] No such file or directory: '/tmp/output.mp4' Traceback (most recent call last):   File "/var/task/lambda_function.py", line 65, in lambda_handler     s3_upload_response = s3.put_object(Bucket=bucket, Body=open('/tmp/output.mp4', 'rb'), Key =filename)

2023-05-01T16:08:23.929+05:30   END RequestId: 4557a174-e12c-4924-971a-ef8f852b106b


  


  Full Code snippet

  


  import json
from gtts import gTTS
import openpyxl
import boto3
import base64
import openai
import os
import random
import ffmpeg
import subprocess

# os.system("cp -ra bin/ffmpeg /tmp/")
# os.system("chmod -R 775 /tmp")

#from botocore.vendored import requests
language = 'en'
def lambda_handler(event, context):
    input1 = event["queryStringParameters"]['question']
    outputText=""
    
    # Define variable to load the dataframe
    dataframe = openpyxl.load_workbook('QNA/Book1.xlsx')
    
      #accesskey and secretkey for the S3 bucket
    accesskey = os.getenv("access_key")
    secretkey = os.getenv("secret_key")
    
    # Define variable to read sheet
    ws = dataframe['Sheet1']
    
    for row in ws.iter_rows(0,dataframe.active.max_row):
        for cell in row:
          #print(cell.value)
          if input1 in str(cell.value):
            outputText=row[1].value
  
    
    
      #Save Audio File
    audio = gTTS(text=outputText, lang=language, slow=False)
    audio.save("/tmp/audio.mp3")
    
    cmd='ffmpeg -stream_loop -1 -i QNA/mayur.mp4 -i tmp/audio.mp3 -shortest -map 0:v:0 -map 1:a:0 -y tmp/output.mp4'
    subprocess.run(cmd, shell=True)


  


  Note : I Download the static library from Here and added it to the python folder and generate python.zip with other dependencies and upload it on the aws layer and the AWS layer is linked with the python function.

  


  Note : Above code is working fine with google codelab and is able to generate a merged video working fine.

  


  Any help would be appriciated

  


• How to convert mp4 files into mp3 on button click using ffmpeg/php ?

  4 juin 2019, par flash

  I am working on a php code as shown below where I am converting mp4 files into mp3 using system command ffmpeg (in the case statement below).

  <?php 
  
  
  
  $mp4_files = preg_grep('~\.(mp4)$~', scandir($src_dir)); 
  
  
  
  foreach ($mp4_files as $f)
  
   {
  
  
  
       $parts = pathinfo($f);
  
       switch ($parts['extension'])
  
       {
  
           case 'mp4' :
  
               $filePath = $src_dir . DS . $f;
  
               system('ffmpeg -i ' . $filePath . ' -map 0:2 -ac 1 ' . $destination_dir . DS . $parts['filename'] . '.mp3', $result);  // Through this command conversion happens. 
  
       }
  
   }
  
  
  
  $mp3_files = preg_grep('/^([^.])/', scandir($destination_dir));
  
  
  
  ?>

  After conversion, mp3 files goes into destination_dir. If new mp4 file arrives in $src_dir, the conversion usually happen on refresh of a page.

  Once the conversion is complete, I am parsing everything into table as shown below :

  <table>
  
     <tr>
  
        <th style="width:8%; text-align:center;">House Number</th>
  
        <th style="width:8%; text-align:center;">MP4 Name</th>
  
        <th style="width:8%; text-align:center;">Action/Status</th>
  
     </tr>
  
     &lt;?php
  
        $mp4_files = array_values($mp4_files);
  
        $mp3_files = array_values($mp3_files);
  
        foreach ($programs as $key => $program)    { 
  
           $file = $mp4_files[$key];     
  
           $file2 = $mp3_files[$key];   // file2 is in mp3 folder
  
        ?>
  
     <tr>
  
        <td style="width:5%; text-align:center;"><span style="border: 1px solid black; padding:5px;">&lt;?php echo basename($file, ".mp4"); ?></span></td> 
  
        <td style="width:5%; text-align:center;"><span style="border: 1px solid black; padding:5px;">&lt;?php echo basename($file); ?></span></td>              
  
        <td style="width:5%; text-align:center;"><button style="width:90px;" type="button" class="btn btn-outline-primary">Gotd>  
  
     </button></td></tr>
  
     &lt;?php } ?>
  
  </table>

  Problem Statement :

  I am wondering what changes I should make in the php code above that on click of a Go button, conversion of individual mp4 into mp3 happen.

  On clicking of Go button, individual mp3 file (from an mp4) belonging to an individual row should go inside destination directory ($destination_dir).