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• sending FFMPEG the start_number of image sequence in a batch script

  31 janvier 2023, par getho

  I'm creating a batch script to daily convert screen captures to video
Its all working except I cant get the screen caps to start at 0001 each day,so my current script fails.

  


  Is there a way within FFMPEG to just read all the files in a folder (e.g. if I have one folder with 500 files starting with 01234.jpg and another folder with files starting at 87654.jpg) ?

  


  If not, can I use the batch script to find the start and finish points and send that to ffmpeg ?

  


  my script

  


  @echo off
setlocal enabledelayedexpansion

rem Check if a new folder has been added to the watched folder
for /f "tokens=*" %%a in ('dir "Y:\fastone_timelapse" /B /AD') do (
   set "new_folder=%%a"

   rem Check if jpeg files are present in the new folder
   if exist "Y:\ft\!new_folder!\*.jpg" (
         
ffmpeg.exe -f image2 -framerate 25 -pattern_type sequence -start_number 00001 -i "Y:\ft\!new_folder!\%%05d.jpg" -c:v libx265 -b:v 5000k -g 100 "Y:\ft\!new_folder!.mp4"


   )
)
endlocal


  


• dcaenc : cleanup on init failure and add a threadsafe init codec cap

  13 janvier 2018, par Rostislav Pehlivanov

  dcaenc : cleanup on init failure and add a threadsafe init codec cap
  The encoder didn't clean up if a malloc failed during init.
  
  It also doesn't need any external tables to be initialized on init.
  
  Finally, it didn't need to check for whether avctx->priv_data exists during
  
  uninit.
  Signed-off-by : Rostislav Pehlivanov <atomnuker@gmail.com>
  

  • [DH] libavcodec/dcaenc.c

• How to use ffmpeg to record audio from a video for first 10 seconds in Python

  13 novembre 2022, par S Andrew

  I have RTSP stream coming from a camera which also has audio. My goal is to save the audio. To do this, I have below code :

  


  import ffmpeg&#xA;ffmpeg.input("rtsp://john:<pwd>@192.168.10.111:5545/Streaming/Channels/291/").output("test.wav", map="0:a:0").run&#xA;</pwd>

  


  When I terminate the Python script, it saves the test.wav file which has just the audio from the rtsp stream. Now I am trying to save the first 10 sec from the stream into 1 file and then the next 10sec in another file and then it keeps on going until terminated.

  


  To do this, I have thought of putting the ffmpeg stream in a separate thread and to schedule that thread to run every 10 sec. This way a new stream will create which will save the audio for 10sec and will exit, and then this keeps on going. But to achieve this, I need to know how can we just save the initial 10 sec from the stream.