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• Merge commit 'bd805964f40f7af83da64645ba83d1e8060a1214'

  21 octobre 2017, par James Almer

  Merge commit 'bd805964f40f7af83da64645ba83d1e8060a1214'
  * commit 'bd805964f40f7af83da64645ba83d1e8060a1214' :
  
    configure : Do not treat JACK as a system library
  Merged-by : James Almer <jamrial@gmail.com>
  

  • [DH] configure

• InnoSetup python subprocess Popen ffmpeg

  1er juillet 2023, par Chris P

  In my code i have this line :

  


  self.p1 = Popen([self.ffmpeg_path,'-y','-loglevel','quiet','-i',self.retransmition_url,'epalxeis-radio.mp3'],stdin=PIPE,stdout=PIPE,stderr=PIPE, bufsize=1)


  


  which read an web radio stream and saves it locally with filename "epalxeis-radio.mp3"

  


  Using python to launch the script - works !
Using pyinstaller to launch the exe - works !
Using InnoSetup to launch the exe after installation - not working :(.

  


  The problem is that there is no epalxeis-radio.mp3 created when i try the third case (innosetup).

  


  The ffmpeg_path is : self.ffmpeg_path = os.path.abspath("extra/ffmpeg.exe")
and there is the extra folder in the same directory which is the innosetup exe.

  


  From Windows task manager there is no ffmpeg.exe shown in the tasks list.

  


  What wrong ?

  


  Edit : I used a smaller script to test the error :

  


  from subprocess import Popen, DEVNULL, STDOUT, PIPE
import os
import time
ffmpeg_path = os.path.abspath("extra/ffmpeg.exe")
retransmition_url = "http://shaincast.caster.fm:40636/listen.mp3?authn76260dc1cdf44a9132c0b63f85d9c67a"
with Popen([ffmpeg_path,'-y','-loglevel','quiet','-i',retransmition_url,'epalxeis-radio.mp3'],stdin=PIPE,stdout=PIPE,stderr=PIPE) as p1:
    time.sleep(1)


  


  in pyinstaller exe runs, but in innosetup exe stop immediately.

  


• high memory & cpu usage in ffmpeg C sample when muxing audio and video

  24 juin 2016, par chandu

  I am using the muxing.c example provided with ffmpeg 3.0 version to create an MP4 file (H.264 & AAC) with VS 2013.

  The sample is working fine with default width & height for video, but when I changed the width to 1920 and height to 1080, the sample is taking nearly 400MB & 60-70% cpu usage (using task manager & in Release mode) throughout the program. I have used multi threading also.

  I tried to free the encoded packet after calling write_frame(), but to no success.
  The memory is being released only after calling avcodec_close().

  Could anybody please tell me what I am doing wrong ?

  I am adding link (https://drive.google.com/open?id=0B75_-V7se7tmWUhyM0ItS0kzUVk) to code I tested with VS 2013.

  The screenshot link https://drive.google.com/open?id=0B75_-V7se7tmVm4tUjFtSnNNSHc

  The STREAM_DURATION value in the sample is set to 120 seconds (even tested with 600 seconds) and I changed default Height & Width values of AVCodecContext in add_stream function for video type to 1080 & 1920 respectively. Through out program, it is taking 355 MB, not changing at all. I think, once frame is encoded using avcodec_encode_video2 and written to the file, the memory should be released.

  Please correct me if I am wrong.