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• moov atom not found (Extracting unique faces from youtube video)

  10 avril 2023, par Tochukwu

  I got the error below

  


  Saved 0 unique faces
[mov,mp4,m4a,3gp,3g2,mj2 @ 0000024f505224c0] moov atom not found


  


  Trying to extract unique faces from a YouTube video with the code below which is designed to download the YouTube video and extract unique faces into a folder named faces. I got an empty video and folder. Please do check the Python code below

  


  import os
import urllib.request
import cv2
import face_recognition
import numpy as np

# Step 1: Download the YouTube video
video_url = "https://www.youtube.com/watch?v=JriaiYZZhbY&t=4s"
urllib.request.urlretrieve(video_url, "video.mp4")

# Step 2: Extract frames from the video
cap = cv2.VideoCapture("video.mp4")
frame_count = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
frames = []
for i in range(frame_count):
    cap.set(cv2.CAP_PROP_POS_FRAMES, i)
    ret, frame = cap.read()
    if ret:
        frames.append(frame)
cap.release()

# Step 3: Detect faces in the frames
detected_faces = []
for i, frame in enumerate(frames):
    face_locations = face_recognition.face_locations(frame)
    for j, location in enumerate(face_locations):
        top, right, bottom, left = location
        face_image = frame[top:bottom, left:right]
        cv2.imwrite(f"detected_{i}_{j}.jpg", face_image)
        detected_faces.append(face_image)

# Step 4: Save the faces as separate images
if not os.path.exists("faces"):
    os.makedirs("faces")
known_faces = []
for i in range(len(detected_faces)):
    face_image = detected_faces[i]
    face_encoding = face_recognition.face_encodings(face_image)[0]
    known_faces.append(face_encoding)
    cv2.imwrite(f"faces/face_{i}.jpg", face_image)
print("Saved", len(known_faces), "unique faces")


  


• MKV to MP4 converted video doesn't play in flex

  24 mars 2015, par ketan

  I am stuck on one issue from last 1 day. I am using Adobe flex video display to play video for my site.

  There is some converted video from MKV to MP4 using ffmpeg.

  ffmpeg -i Test.mkv -vcodec copy -acodec copy Test.mp4

  Now, i am trying to play that video from local it’s working fine. But when i upload that video on server and trying to play video. Then it will not work with flex VideoDisplay same will work in browser and HTML videoplayer and also works with JWPlayer.

  Other mp4 video which are not converted works very fine. Only converted Videos are not working in only flex VideoDisplay.

  Any help will be appreciate,
  Thanks.

• Android ffmpeg lib has no runnable permission

  30 mai 2014, par peliken

  I have an app that works with ffmpeg library. There are free and full version. Both version
  works fine, but after upload them to google play and then install from it full version begin says "java.io.IOException: Error running exec() Working Directory: null" when I try to use ffmpeg.
  I root my device to check libraries (libffmpeg.so) in app folder and I found that in free version library has
  -rwxr-xr-x permission that is normal but full version library has -rw-r--r-- permission that is read only.
  If I install app without google play from my apk’s all works fine.