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• ASP.NET : Powershell script finishes after the first ffmpeg call

  24 mars 2014, par sk904861

  The following Powershell script only executes the first ffmpeg call, no matter which one is first. Both the ffmpeg and the powershell processes never finish.

  Param($InputFile, $OutputFile, $Thumbnail, $Sprites)
  
  
  
  $ThumbnailWidth = 120
  
  $ThumbnailHeight = 120
  
  
  
  # Thumbnail
  
  ffmpeg -i $InputFile -f image2 -vframes 1 -filter:v "crop=min(iw\,ih):min(iw\,ih), scale=$($ThumbnailWidth):$($ThumbnailHeight)" -crf 18 "$($Thumbnail)\150x150.png"
  
  
  
  # Poster
  
  ffmpeg -i $InputFile -f image2 -vframes 1 -filter:v "crop=min(iw\,ih):min(iw\,ih), scale=$($PosterWidth):$($PosterHeight)" -crf 18 "$($Thumbnail)\1000x1000.png"

  The script gets called within an ASP.NET application as follows :

  ProcessStartInfo startInfo = new ProcessStartInfo();
  
  startInfo.FileName = "powershell.exe";
  
  startInfo.Arguments = String.Format("-executionpolicy RemoteSigned -file \"{0}\" \"{1}\" \"{2}\" \"{3}\" \"{4}\"", scriptPath, fullPath, videoPath, thumbnailPath, sprites);
  
  startInfo.RedirectStandardOutput = true;
  
  startInfo.RedirectStandardError = true;
  
  startInfo.UseShellExecute = false;
  
  startInfo.CreateNoWindow = true;
  
  Process process = new Process();
  
  process.StartInfo = startInfo;
  
  
  
  process.EnableRaisingEvents = true;
  
  process.Exited += delegate
  
  {
  
       // Do some cleaning up
  
  };
  
  
  
  process.Start();

  Does anyone have a clue, why only the first the two ffmpeg calls is working, while each call seems to be correct ?

• Having trouble with color code in batch file

  23 juin 2022, par Lary David

  I'm trying to only have ffmpeg progress to be colored, but for some reason when I terminate or go full-screen this monstrosity occurs :
Issue

  


  @echo off
@echo off
title Stream Recorder
cls
:start
set message=Stream Recorder
echo %message%
echo(
echo [32m1. Chrome [0m
echo [34m2. Edge [0m
echo [33m3. Firefox [0m
echo [31m4. Opera [0m
echo [1;31m5. Vivaldi [0m
:choice
set choice=
set /p "choice=* Pick your browser (between 1-5): "
if not '%choice%'=='' set choice=%choice:~0,1%
if '%choice%'=='1' goto chrome
echo "%choice%" is not valid, try again.
ECHO.
goto choice

:chrome
:url
echo(
set /p "address=* M3U8 Url: "
For /F %%G In ('%__AppDir__%curl.exe -s -o NUL "%address%" -w "%%{http_code}\n"') Do Set "response=%%G"
echo %response%
IF %response% == 200 (
    ECHO [32mURL check was successful.[m &goto :username
) ELSE (
    ECHO [31mURL is not valid, try again.[m &goto :url
)
:username
set /p "filename=* Streamer Name: "
echo(
set message=* Recording:
echo [0m%message%[42;1m
ffmpeg -v warning -hide_banner -stats -user_agent "" -i "%address%" -c copy "%~dp0/%filename%_%DATE:~7,2%-%DATE:~4,2%-%DATE:~-4%_%time:~-11,2%-%time:~-8,2%-%time:~-5,2%.mp4"
pause


  


  Also, would be helpful if my code needs some cleaning up.

  


• New Challenges

  1er janvier 2014, par silvia

  I finished up at Google last week and am now working at NICTA, an Australian ICT research institute.

  My work with Google was exciting and I learned a lot. I like to think that Google also got a lot out of me – I coded and contributed to some YouTube caption features, I worked on Chrome captions and video controls, and above all I worked on video accessibility for HTML at the W3C.

  I was one of the key authors of the W3C Media Accessibility Requirements document that we created in the Media Accessibility Task Force of the W3C HTML WG. I then went on to help make video accessibility a reality. We created WebVTT and the <track> element and applied it to captions, subtitles, chapters (navigation), video descriptions, and metadata. To satisfy the need for synchronisation of video with other media resources such as sign language video or audio descriptions, we got the MediaController object and the @mediagroup attribute.

  I must say it was a most rewarding time. I learned a lot about being productive at Google, collaborate successfully over the distance, about how the WebKit community works, and about the new way of writing W3C standard (which is more like pseudo-code). As one consequence, I am now a co-editor of the W3C HTML spec and it seems I am also about to become the editor of the WebVTT spec.

  At NICTA my new focus of work is WebRTC. There is both a bit of research and a whole bunch of application development involved. I may even get to do some WebKit development, if we identify any issues with the current implementation. I started a week ago and am already amazed by the amount of work going on in the WebRTC space and the amazing number of open source projects playing around with it. Video conferencing is a new challenge and I look forward to it.