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• What google cloud service can be used to process files stored in Firebase Cloud Storage with FFmpeg ? [closed]

  1er mai 2021, par uponly

  I am building a ReactJs app and I am trying to figure out a way to process files (images, videos, and audio of any type) that are stored in my Firebase storage bucket using FFmpeg. Currently, I have set up the functionality for allowing the user to upload files to my storage bucket, and a corresponding URL link is stored in a document in Firestore.

  


  Ideally, I'd love to do this with Cloud Functions HTTP triggers because I have all of that setup already. It would be nice to just call an HTTP trigger to process the file after it has been uploaded. However, after a bit of research, my current understanding is to somehow deploy my app using a flexible Google App Engine environment because apparently, it is the only way to set a manual timeout in case I have to process a long, high-quality video, for example. Thus I wouldn't be able to use Cloud Functions because there is a very short timeout period which may lead to the files not being fully processed.

  


  Here is the user flow I am trying to achieve, which may help make things more clear :

  


  

  1. [Done] The user uploads a file (image, audio, or video) to Firebase cloud storage. A URL is also stored in their corresponding user document in Firestore.

  


  2. [Here and the steps onward are what I am trying to achieve] After the file has been stored, I'd like to kick off some sort of function that grabs the newly stored file and begin to process it in the cloud.

  


  3. Store the newly processed file back into the Cloud Storage bucket

  


  4. Allow the user to preview the processed file (by streaming it ideally, if possible).

  


  


  In steps 2 and onward, I am just generally confused about what Google service I should be using to process my file in the cloud with FFmpeg. As well as how I can connect it to my React app, client-side. If I have to go the Google App Engine route, how do I go about connecting app engine to my React App such that I don't have to build my app and deploy it, as my app is still in development ?

  


  This is not a coding question so I apologize if this is the wrong place to post in. I am new to all this, any and all help is greatly appreciated. Thank you.

  


• FFMpeg overlay and fade images and text in and out at over video background

  28 décembre 2019, par grootester

  Prior to applying the drawbox and drawtext text option I was able to fade in and out images easily. However, attempting to incorporate the drawtext produces unwanted errors. Any ideas how this could be rememdied ? Love to show multi-line text (different fonts) centered over box at specific times with fade in fade out times that works alongside images fading in out at specific times.

  ffmpeg -i vids/testVid.mp4 -loop 1 -i slideshow/pic1.png -loop 1 -i slideshow/pic2.png -loop 1 -i slideshow/pic3.png -i slideshow/pic4.png -filter_complex "[0:v]drawbox=x=40:y=40:w=250:h=75:color=white,drawtext=fontfile=arialb.ttf:fontsize=24:font color=black:text=Micky Mouse,drawtext=fontfile=arial.ttf:fontsize=24 : font color=black:text=January 1st 1938 — December 19th 2019fade=st=0:d=1:alpha=1,fade=out:st=5:d=1:alpha=1,trim=0:6,setpts=PTS+4/TB[ovr1] ; [2]fade=st=0:d=1:alpha=1,fade=out:st=5:d=1:alpha=1,trim=0:6,setpts=PTS+10/TB[ovr2] ; [3]fade=st=0:d=1:alpha=1,fade=out:st=5:d=1:alpha=1,trim=0:6,setpts=PTS+16/TB[ovr3] ; [4]fade=st=0:d=1:alpha=1,fade=out:st=5:d=1:alpha=1,trim=0:6,setpts=PTS+22/TB[ovr4] ; [0:v][ovr1]overlay=(main_w-overlay_w)/2 :(main_h-overlay_h)/2:enable=’between(t,4,10)’[base1] ; [base1][ovr2]overlay=(main_w-overlay_w)/2 :(main_h-overlay_h)/2:enable=’between(t,10,16)’[base2] ; [base2][ovr3]overlay=(main_w-overlay_w)/2 :(main_h-overlay_h)/2:enable=’between(t,16,22)’[base3] ; [base3][ovr4]overlay=(main_w-overlay_w)/2 :(main_h-overlay_h)/2:enable=’between(t,22,28)’[out]" -map "[out]" -c:v libx264 -c:a copy -flags +global_header -crf 27 -preset veryfast -s 1920x1080 -y slideshow/outTest.mp4

• FFMPEG Error Handling Not Working

  23 mars 2017, par Waverunner

  I’m fairly new to batch files and trying to create a Windows script that automatically converts all files in the extensions list I provide to MP4 and log the successes and failures. The problem I’m running into is that some of the videos are failing with zero byte outputs and even though there’s two levels of error handling so the originals don’t get deleted, they aren’t working and the originals get deleted regardless if the conversions succeed or not.

  The two protections are :

  (1) FFMPEG - abort_on empty_output option

  (2) IF/ELSE loop that checks for zero-size files

  Any ideas for better error handling would be appreciated.

  :: Name:     MKV2MP4.cmd
  
  :: Purpose:  Automatically converts non-MP4 video files to MP4 either by stream copy or by reencoding.
  
  :: Revision: March 2017 - Initial version
  
  
  
  :: Variables
  
  :: %%L = List of Extensions
  
  :: %%F = Files to be converted
  
  :: %%N = New file
  
  
  
  @echo OFF
  
  CLS
  
  setlocal
  
  echo This script automatically converts non-MP4 video files to MP4 either by stream copy or by reencoding.
  
  echo.
  
  echo Changing to data directory...
  
  Z:
  
  cd Z:\Users\Todd\
  
  echo.
  
  
  
  FOR /F "delims=*" %%L IN (Z:\Logs\Extensions.txt) DO (
  
  echo Collecting %%L files...
  
  dir /b /s *.%%L > Z:\Logs\%%L.txt
  
  )
  
  echo.
  
  echo File collection complete.
  
  echo.
  
  
  
  FOR /F "delims=*" %%L in (Z:\Logs\Extensions.txt) DO (
  
  echo Working on %%L files...
  
  echo.
  
  
  
  FOR /F "delims=*" %%F in (Z:\Logs\%%L.txt) DO (
  
  echo Converting "%%F"
  
  echo.
  
  ffmpeg.exe -y -i "%%F" -abort_on empty_output -aspect 16:9 -c:v copy -c:a copy "%%~dpnF.mp4" || ffmpeg.exe -y -i "%%F" -abort_on empty_output -aspect 16:9 -c:v libx265 -c:a copy "%%~dpnF.mp4"
  
  echo.
  
  set N="%%~dpnF.mp4"
  
  
  
  IF %%~zN==0 (
  
  echo Conversion failed!  Skipping file.
  
  echo Adding log entry...
  
  echo %time% - Failed - "%%F" >> "Z:\Logs\%date:~-4,4%%date:~-10,2%%date:~-7,2% - %%L.txt"
  
  ) ELSE (
  
  echo Conversion successful!  Deleting old file.
  
  echo Deleting "%%F"
  
  del "%%F" /F
  
  echo Adding log entry...
  
  echo %time% - Successful - "%%F" >> "Z:\Logs\%date:~-4,4%%date:~-10,2%%date:~-7,2% - %%L.txt"   
  
  )
  
  
  
  echo.
  
  )
  
  
  
  echo %%L files completed.
  
  echo. Cleaning up...
  
  del %%L /F /S
  
  )
  
  
  
  echo Job completed.  Exiting..