I was working on a Gtk 3 project to roll up all my iPhone videos into a flowbox for easy locating and processing since iPhone doesn’t name things in a meaningful way and photo managers dump things into not so meaningful folders, thumbnails was a must to locate videos easily. Plus, I wanted to do some Gtk programming.
I started with GStreamer 1.0, which worked, but not for .mov files. This handles MP4 and MOV. I have not tested other types so it might need further tweaks.
Hope it is helpful to someone. I can provide GStreamer code if you need it. It is also Python and is slightly faster.
#!/usr/bin/python3 import os import time import datetime import getpass import cv2 from PIL import Image """ Requires: OpenCV2 PIL Install via pip or apt. """ def get_framecv(in_vid, out_vid, w=192, h=108): """Generate thumbnail.""" # Opencv create thumb. try: cap = cv2.VideoCapture(in_vid) video_length = int(cap.get(cv2.CAP_PROP_FRAME_COUNT)) - 1 print('length',video_length) while cap.isOpened(): try: ret, frame = cap.read() cv2.imwrite(out_vid, frame) break except: pass cap.release() # PIL: resize img = Image.open(out_vid) # image extension *.png,*.jpg img = img.resize((w, h), Image.ANTIALIAS) img.save(out_vid) except Exception as e: return e def is_video_file(filename, extensions): """Filter videos""" return any(filename.lower().endswith(e) for e in extensions) def scan_vids(base_dir, extensions): """Walk path and get all videos in path.""" for dirpath, dirs, files in os.walk(base_dir): for filename in files: if is_video_file(filename, extensions): full_path = os.path.join(dirpath,filename) date_object = datetime.datetime.fromtimestamp(os.path.getctime(full_path)) yield os.path.join(dirpath,filename),date_object.date() def gen_thumbs(path,extensions,output=None): """Worker function""" img_date = datetime.datetime.now().date() associations =  if output: img_store = output else: #img_store = r'/home/%s/video_thumbs' % getpass.getuser() img_store = os.path.join(path, 'thumbnails') if not os.path.exists(img_store): os.mkdir(img_store) for vid_info in scan_vids(path, extensions): vid_path,vid_date = vid_info vid_name = os.path.split(vid_path)[-1].split('.') img_path = os.path.join(img_store,'thumb_%s.png' % vid_name) err = get_framecv(vid_path,img_path) if err: continue # Handle errors. associations.append((img_path, img_date, vid_path, vid_date)) return associations if __name__ == '__main__': filter_extensions = ['.mov', '.mp4'] local_path = None # Set path to run from program. if local_path: user_path = local_path else: # Run from terminal. user_path = None user_path = input('Path to videos: ') if not user_path: print('Path required.') os._exit(0) if not os.path.exists(user_path): print('Supplied path %s is invalid.' % user_path) os._exit(0) # Run... results = gen_thumbs(user_path, filter_extensions, output=None) # Print results. for i in results: print(i)