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• How can I convert an FFmpeg command line to python code

  1er janvier 2023, par Ali Herz

  I'm trying to combine an image with an audio file and convert them to mp4.
I found this command line and I used it. It works perfectly.

  


  ffmpeg -loop 1 -i 01_Prologue.png -i 01_Prologue.wav -c:v libx264 -tune stillimage -c:a aac -b:a 192k -pix_fmt yuv420p -shortest out.mp4

  


  I want to use python because I want to combine multiple images with multiple audio files

  


  I used this code to combine the same audio and image files but it gave me a blank video file.

  


  import ffmpeg

input_still = ffmpeg.input("image.jpg")
input_audio = ffmpeg.input("audio.wav")

(
ffmpeg
.concat(input_still, input_audio, v=1, a=1)
.output("output.mp4")
.run(overwrite_output=True)
)


  


  I'm guessing that is because I didn't add the filters to the code, and the problem happened.

  


  but how to do it ?

  


• ffmpeg code (API)

  22 juin 2014, par user3209762

  I started to deal with ffmpeg API ( not the command prompt ) to build a movie editor, and I’m trying to find a good tutorial about how to extract keyframes from video, but I didn’t find it.

  1. Someone did it before and can write the code here ?
  2. Someone has a good tutorial about ffmpeg API ?

  Thank you !

• Extract subtitle by language code via ffmpeg

  7 mai 2023, par TrustFound

  I have a simple task - extract subtitle for exact language from tvshows.
For example, I want to extract English subtitles from Netflix's show.
As you know there're a few different types of subtitles : forced, full and SDH.
So I want to extract all of them if it has eng language code.

  


  To extract 1 subtitle from file I used this code for windows :

  


  FOR %%i IN (*.mkv) DO (ffmpeg.exe -i "%%i" -map 0:s:m:language:eng -c copy "%%~ni".eng.srt)


  


  It worked fine with 1 english subtitle per file. But if it contains 2, ffmpeg shows error

  


  


  SRT supports only a single subtitles stream

  


  


  ---

  


  MI is...

  


  

  • Stream #0:2(eng) : Subtitle : subrip

  


  • Stream #0:3(eng) : Subtitle : subrip

  


  • Stream #0:4(ara) : Subtitle : subrip

  


  • ...

  


  


  ---

  


  So I should set 2 or more output files. I tried to figure out how to do this and found similar threads on reddit and stacksoverflow. They said there's no way to do this without ffprobe.
So I used ffprobe to parse all subtitle tracks and their language code.

  


  FOR %%i IN (*.mkv) DO (ffprobe -loglevel error -select_streams s -show_entries stream=index:stream_tags=language -of csv=p=0 -i %%i > subs.txt)


  


  File contains this info :

  


  

  • 2,eng

  


  • 3,eng

  


  • 4,ara

  


  • ...

  


  


  ---

  


  As I understand I should use integers and set them values 2 and 3. I want to get output like this

  


  


  

  • MovieName.2.eng.srt

  


  • MovieName.3.eng.srt

  


  


  


  If it easier to extract all subs, let it be. I tried to do this too but I dont know how to set integers and use them :(
So what I should do ?
Thanks in advance