Recherche avancée

Sur d’autres sites (13064)

• How to get video frames from h264 video using FFMPEG in ios

  22 avril 2015, par narendrakumar b

  how to use SampleBuffer, for decoding the video in iOS Refer this link .I want to use frames in SampleBuffer. How can i pass the data into SampleBuffer.

  Any Suggestions or reference links can be invited.

  Thanks in Advance

• Find frames in the video that are similar to the static image, to crop the video

  13 septembre 2024, par Nguyen Van Kufu

  I use opencv with ffmpeg to cut the video. Specifically, find the frame in the video that is the same as the picture, then cut the video at the time the video frame is the same as the picture.

  


  I found the code on google and edited it according to my needs, but when it comes to comparing frames and still images, I don't know how to ask you to add a comparison section to cut the video.

  


  import numpy as np
import cv2
import time
from skimage.metrics import structural_similarity as compare_ssim

hinh = cv2.imread("f:\\x.png")
hinh1 = cv2.resize(hinh, (500, 300))
cap = cv2.VideoCapture('f:\\tt.mp4')
prev_frame_time = 0
new_frame_time = 0
cv2.imshow('hinh', hinh1)

while(cap.isOpened()):
    ret, frame = cap.read()

    if not ret:
        break

    gray = frame

    gray = cv2.resize(gray, (500, 300))
    font = cv2.FONT_HERSHEY_SIMPLEX
    new_frame_time = time.time()

    fps = 1/(new_frame_time-prev_frame_time)
    prev_frame_time = new_frame_time

    fps = int(fps)

    fps = str(fps)

    cv2.putText(gray, fps, (7, 70), font, 3, (100, 255, 0), 3, cv2.LINE_AA)
    ##############

    # displaying the frame with fps

    cv2.imshow('frame', gray)

    # press 'Q' if you want to exit
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()


  


• Sinch Video calling not working with ffmpeg video cropping

  29 mars 2016, par Mubina Shaikh

  My project having ffmpeg video cropping libs,I have added the sinch files under src/main/jniLibs,what happen is project runs successfully but when initiate the video call of sinch blank white color screen appears.Also try to add this code in .mk files of video cropping libs as there is no .mk file is there for sinch,but it still not working.

  The code added in .mk files to load the sinch lib module.

   include $(CLEAR_VARS)
  
  
  
   LOCAL_MODULE := libsinch-android-rtc
  
  
  
   LOCAL_STATIC_LIBRARIES := sinch-android-rtc-3.9.3
  
  
  
   LOCAL_LDLIBS := -llog
  
  
  
   include $(BUILD_SHARED_LIBRARY)