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• Anomalie #2108 (Fermé) : Pièce jointe dans un forum

  19 juin 2011, par cedric -

• Playback / recording problems

  3 novembre 2024, par Wessiez

  The code I'm working on gives me some errors. This results in frame lost when recording.

  


  The overview : A video is paused in the first frame. When the motion sensor is detected the video is playing a scary scene. After that it pauses again on the first frame.
At the same time when motion is detected the camera starts recording the reaction of the poeple watching the scary scene.

  


  This is my code :

  


  from gpiozero import MotionSensor
from time import sleep
from picamera2 import Picamera2
from picamera2.encoders import H264Encoder
from picamera2.outputs import FfmpegOutput
import vlc
import datetime

# Creating Instance class object
vlc_instance = vlc.Instance()
player = vlc_instance.media_player_new()
player.set_fullscreen(True)
  
# Define Motion Sensor
pir = MotionSensor(4)

# Camera
camera = Picamera2()
video_config = camera.create_video_configuration()
camera.configure(video_config)
camera.rotation = 180
encoder = H264Encoder(bitrate=10000000)
output = FfmpegOutput('/home/wessie/Halloween/Recordings/' + datetime.datetime.now().strftime('%Y-%m-%d_%H.%M.%S.h264'))

print("Sensor loading")
pir.wait_for_no_motion()
sleep(.1)
player.set_mrl("/home/wessie/Halloween/ScareMedia/FemaleScare.mp4")
player.play()
sleep(.1)

while True:
    try:
        print("Ready")
        pir.wait_for_motion()
        sleep(.1)
        print("Motion detected")
        sleep(.1)
        player.set_mrl("/home/wessie/Halloween/ScareMedia/FemaleScare.mp4")
        player.play()
        sleep(.1)
        camera.start_recording(encoder, output)
        sleep(12)
        camera.stop_recording()
        while player.get_state() in playing:
            sleep(.1)
            continue        
        print("Finished")
        sleep(.1)
    except KeyboardInterrupt:
        break
    except:
        continue


  


  After "Motion detected" the message is :
"Application provided invalid non monotonically increasing dts to muxer in stream 0 :"

  


  I've tried to cleanup this code, but everything I do results in other errors.

  


  Is the code in the right order ? The scary scene seems to work, but the recording is not 100%

  


• [FFmpeg on Windows] : help me converting a set of .png files to a video file

  31 octobre 2016, par Stefano Fedele

  Hi everybody I am on windows 10, I installed FFMpeg and I would like to use it to convert 100 .png image files into a video file.

  I am using it via the prompt, which is the Windows console, and I am struggling with the syntax (which probability comes from Linux). I set the folder in which ffmpeg.exe is contained as a windows system path as suggested on many websites and I moved the prompt to the folders in which the image files are contained which is reported here :

  cd C:\video\pnts + ag 40 nm- during-tmpyp 10-12- laser power 7mw- kinetic100- exposure time 1s- gain

  I would like to convert the image files contained in this folder into a video file, the names of those image files are reported here :

  pnts + ag 40 nm- during-tmpyp 10-12- laser power 7mw- kinetic100- exposure time 1s- gain 20 001.png

  pnts + ag 40 nm- during-tmpyp 10-12- laser power 7mw- kinetic100- exposure time 1s- gain 20 002.png

  ...

  ...

  pnts + ag 40 nm- during-tmpyp 10-12- laser power 7mw- kinetic100- exposure time 1s- gain 20 100.png

  The number of frames per second whould be 2.

  I read on internet that I should have to type something like this

  ffmpeg -i image-%03d.png video.webm

  But it looks like there are a lot of variables to consider and all the times I try to set them and run FFmpeg I get an error from the prompt.
  Is there anyone who could suggest me the proper syntax, please ?