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• Is there a way to open a batch file at a certain line using a command prompt window

  14 août 2024, par Voidmaster01

  Im testing a batch file that Im still in the process of making and I want to open it at line 6 instead of line 1 since ive already run that part of the code. it takes a couple of minutes to run it since im using ffmpeg.

  


  this is the first area of the code

  


  1 @Echo off
2 set /p IPath=Enter the Path of the file you wish to remux from (use "Copy as path" option and keep  the Quotations): 
3 set /P M=what is the first letter of the path of your new file?(do not include the semicolon(:))
4 set /p NewPath=Enter the Path you wish to remux to (must be path minus the directory BUT do not use  Quotations for this)(I also recommend using a single folder to hold the files while remuxing them before sending them  to their separate folders):
5 ffmpeg -i %IPath%  -c copy -map 0 "%M%:\%NewPath%"
6 goto :Premiere &:: This command takes inputs from the previous lines and sets up to remux files
7
8 :Premiere &:: this command line starts the preferred editor and waits 30 seconds to allow it to start
9 set /p EDITOR=Enter the .exe file for your prefered editor should look like: 'Adobe Premiere Pro.exe':
10 start "" "%EDITOR%"
11 echo Starting Process. . . Please Wait
12 timeout /t 30
13 tasklist | find /I "%EDITOR%" &:: The next couple of lines test for the editor to see if it opened or not
14 if errorlevel 1 (
15      echo could not start process 
16      goto :FailEditor
17 ) Else (
18      echo Process completed, next question--->
19      goto :choice
20 )


  


  so instead of starting at line 1 i would like to start at line 6 to bypass the longest section of the code.

  


  Im thinking its something along the lines of

  


  Start M:\REMUX.bat at line 6

  


  however AT is a command to tell a time to start the batch file so im not sure

  


• hls.js not resolving segment file paths correctly for files hosted on S3 and accessed via cloudfront [closed]

  25 juillet 2024, par Kunal

  I've a HLS video upload on an S3 bucket with following folder structure

  


  https://bucket-name.us-west-1.amazonaws.com/folder/path/to/video/output.m3u8


  


  The contents of output.m3u8 file as following :

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:18
#EXT-X-MEDIA-SEQUENCE:0
#EXTINF:11.011000,
output0.ts
#EXTINF:13.446767,
output1.ts
#EXTINF:7.273933,
./output2.ts
....
.....
....
#EXTINF:1.468133,
output48.ts
#EXT-X-ENDLIST


  


  The HLS segment and playlist file have been created using ffmpeg as below

  


  ffmpeg -i video.mp4 -codec: copy -start_number 0 -hls_time 10 -hls_list_size 0 -f hls video/output.m3u8


  


  The HLS.js library tries to download segment files from urls as below, completely ignoring the folder/path/to/video part of the url.

  


  https://bucket-name.us-west-1.amazonaws.com/output0.ts
https://bucket-name.us-west-1.amazonaws.com/output1.ts
https://bucket-name.us-west-1.amazonaws.com/output2.ts


  


  I tried the same HLS video/playlist url with video.js player and that seems to be correctly fetching the segment files, but unfortunately I am restricted to using hls.js and need to make this work, what might I be doing ?

  


  I want to avoid writing absolute segment paths in m3u8 file because its likely that we may change the domain we serve from bucket-name.s3.amazonaws.com to some CDN like cloudfront or maybe even a custom domain, so flexibility will be nice.

  


  I tried manually editing the output.m3u8 file to absolute url of segment files, that worked but is not viable/scalable solution it seems

  


• how to use ffmpeg in python to record a specific window with system audio without command line and cleanly stop it

  17 juillet 2023, par Jaime

  I'm working in an application that is capturing specific window from my desktop and grabbing the system audio, it application is packaged with pyinstaller with —windowed parameter, when I start to capture video it work perfectly and in a debbug execution it stop cleanly, but when I run it from the packaged file, the ffmpeg process never stop. I'm using subprocess.popen to launch ffmpeg by this way :

  


  command = ['ffmpeg','-f', 'dshow', '-i', f'audio={device}', '-f', 'gdigrab', '-framerate', '30', '-i', f'title={device_model}', '-c:v', 'libx264', '-preset', 'slower', '-crf', '22', f'{file_path}']
subprocess.Popen(comando,stdin=subprocess.PIPE,stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=False)