initial, mostly works

clip.py

@@ -0,0 +1,145 @@
+#!/usr/bin/python3
+
+from tkinter import *
+from tkinter.filedialog import askopenfilename
+from datetime import datetime
+import re
+import os
+import sys
+
+# see man (1)ffmpeg-utils
+# Time must be in format  [-][<HH>:]<MM>:<SS>[.<m>...]
+# or just a decimal number of seconds
+timestamp_matcher = re.compile('((^([0-9]{1,2}:){1,2}([0-9]{1,2})(\\.[0-9]{1,8})?$)|(^([0-9]+(\\.[0-9]+)*$)))')
+match_seconds = re.compile('[0-9]+(\\.[0-9]+)*$')
+window = Tk()
+window.title("Clip Video")
+
+use_copy = IntVar() # whether to use copy filter
+                    # should probably have a dialog to explain this
+
+filetext = Entry(window)
+outtext = Entry(window)
+
+def write_message(msgtext:str):
+    message.configure(text = msgtext)
+
+
+def get_time(text):
+    fmt = ""
+    if "." in text:
+        fmt = ".%f"
+    s_end = text.split(":")
+    if len(s_end) == 2:
+        return datetime.strptime(text, "%M:%S" + fmt)
+    if len(s_end) == 3:
+        return datetime.strptime(text, "%H:%M:%S" + fmt)
+    else:
+        write_message("wot")
+        raise Exception()
+
+def clicked():
+    # TODO:
+    # Use Exiftool / FFmpeg to get metadata to check duration
+
+    start = sttext.get()
+    end = edtext.get()
+    infile = filetext.get()
+    outfile = outtext.get()
+    if (infile == ""):
+        write_message("File not specified")
+        return
+
+    if outfile == "":
+        splitp = os.path.split(infile)[1].split(".")
+        splitp.insert(-1,"clipped")
+        outfile = ".".join(splitp)
+
+    outfile = os.path.join(os.path.split(infile)[0] , outfile)
+
+    if not timestamp_matcher.match(start) or not timestamp_matcher.match(end):
+        write_message("Start and End must\nbe in mm:ss format")
+        return
+    else:
+        write_message("")
+    if not os.path.exists(filetext.get()):
+        write_message("File doesn't exist?")
+        return
+
+    print(use_copy)
+    command = "ffmpeg "
+    if (use_copy.get() == 1):
+        command += " -c copy "
+
+
+    delta = get_time(end) - get_time(start)
+    if (delta.total_seconds() < 0):
+        write_message("Start is after end")
+        return
+
+    dur = str(delta)
+    command += f" -i \"{infile}\" -ss {start} -t {dur} \"{outfile}\""
+    print(command)
+    result = os.system(command)
+    write_message("Converting")
+    if (result != 0):
+        write_message("Failed")
+    else:
+        write_message("Success!")
+
+def get_file():
+    filename = askopenfilename() 
+    if len(filename) != 0:
+        filetext.delete(0,END)
+        filetext.insert(0, string=filename)
+
+
+if len(sys.argv) > 1:
+    filetext.insert(0, sys.argv[1])
+
+
+filebtn = Button(window, text="Choose File", command=get_file)
+filebtn.grid(row=0, column=4)
+
+st = Label(window, text="Start Timestamp")
+ed = Label(window, text="End Timestamp")
+
+copyq = Checkbutton(window,text="Don't re-encode",variable=use_copy)
+
+outfileinstr  = Label(window, text="Output file (same directory as input)", anchor="w") 
+
+sttext = Entry(window,width=10)
+edtext = Entry(window,width=10)
+
+message = Label(window, text="", anchor="w", fg='red')
+
+btn = Button(window, text="Submit", command=clicked)
+
+filetext.grid(column=0, row=0, columnspan=3, sticky=W+E+N+S)
+outfileinstr.grid(column=0, row=4, columnspan=3, sticky=W+E+N+S)
+outtext.grid(column=0, row=5, columnspan=3, sticky=W+E+N+S)
+
+st.grid(column=0, row=1, sticky=W)
+ed.grid(column=0, row=2, sticky=W)
+
+message.grid(column=0, row=6)
+btn.grid(column=4, row=5, sticky=W+E+N+S)
+
+copyq.grid(column=0,row=3)
+
+sttext.grid(column=1, row=1)
+edtext.grid(column=1, row=2)
+
+def keypress(e):
+    if e.keycode == 36:
+        clicked()
+    if e.keycode == 9:
+        window.quit()
+
+window.bind("<Key>", keypress)
+
+
+
+
+
+window.mainloop()