How do I stop the error message when ever I close an uploaded video

Using Streamlit
1

It is coming from this line of code tfile.write(f.read())
Capture

import tempfile
import cv2
import streamlit as st

f = st.file_uploader("Choose a Video")      
tfile = tempfile.NamedTemporaryFile(delete=False) 
tfile.write(f.read())

# Opens the Video file
cap= cv2.VideoCapture(tfile.name)
stframe = st.empty()
i=1
while(cap.isOpened()):
    ret, frame = cap.read()
    if ret == False:
        break
    if i%1000 == 0:
        cv2.imwrite('new_image'+str(i)+'.jpg',frame)
    i+=1
cap.release()
cv2.destroyAllWindows()
2

Hi @chukypedro

I think you can put a check after f,
something like this should work,

import tempfile
import cv2
import streamlit as st

f = st.file_uploader("Choose a Video")
if f:
   tfile = tempfile.NamedTemporaryFile(delete=False) 
   tfile.write(f.read())
   # Opens the Video file
   cap= cv2.VideoCapture(tfile.name)
   stframe = st.empty()
   i=1
   while(cap.isOpened()):
       ret, frame = cap.read()
       if ret == False:
           break
       if i%1000 == 0:
           cv2.imwrite('new_image'+str(i)+'.jpg',frame)
       i+=1
   cap.release()
   cv2.destroyAllWindows()

PS. If you are just trying to play a uploaded video try this,

import streamlit as st
import io

f = st.file_uploader("Choose a Video")
if f:
    st.video(io.BytesIO(f.getbuffer()))