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do not allow writing movie if no frames written

This commit is contained in:
Johannes Stelzer 2023-01-13 17:25:21 +01:00
parent baaa6ef18a
commit b45fda88b7
1 changed files with 3 additions and 1 deletions
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4
movie_util.py
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@ -1,5 +1,4 @@
# Copyright 2022 Lunar Ring. All rights reserved. # Copyright 2022 Lunar Ring. All rights reserved.
# Written by Johannes Stelzer, email stelzer@lunar-ring.ai twitter @j_stelzer
# #
# Licensed under the Apache License, Version 2.0 (the "License"); # Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License. # you may not use this file except in compliance with the License.
@ -149,6 +148,9 @@ class MovieSaver():
r""" r"""
Call this function to finalize the movie. If you forget to call it your movie will be garbage. Call this function to finalize the movie. If you forget to call it your movie will be garbage.
""" """
if self.nmb_frames == 0:
print("You did not write any frames yet! nmb_frames = 0. Cannot save.")
return
self.ffmpg_process.stdin.close() self.ffmpg_process.stdin.close()
self.ffmpg_process.wait() self.ffmpg_process.wait()
duration = int(self.nmb_frames / self.fps) duration = int(self.nmb_frames / self.fps)