Fixed bugs:

• Issue with nesting context managers #655
• Is there one potential bug in FFMPEG_READER? #546
• vfx.scroll giving TypeError: slice indices must be integers or None or have an __index__ method #527
• IndexError when converting audio to_soundarray() #246
• Unable to use unicode strings with Python 2 #76
• Added ffmpeg download when importing moviepy.editor #731 (tburrows13)
• Fixed bugs, neater code, changed docstrings in audiofiles #722 (tburrows13)
• Resolve undefined name execfile in Python 3 #718 (cclauss)
• Fix credits, added tests #716 (tburrows13)
• res —> size to align with line 62 #710 (cclauss)
• Add gap=0 to align with lines 40, 97, and 98 #709 (cclauss)
• import numpy as np for lines 151 and 178 #708 (cclauss)
• Convert advanced_tools.py to valid Python #707 (cclauss)
• Added missing '%' operator for string formatting. #686 (taylorjdawson)
• Addressing #655 #656 (gyglim)
• initialize proc to None #637 (gyglim)
• sometimes tempfile.tempdir is None, so use tempfile.gettempdir() function instead #633 (earney)
• Issue629 #630 (Julian-O)
• Fixed bug in Clip.set_duration() #613 (kencochrane)
• Fixed typo in the slide_out transition #612 (kencochrane)
• Exceptions do not have a .message attribute. #603 (Julian-O)
• Issue #574, fix duration of masks when using concatenate(.., method="compose") #585 (earney)
• Fix out of bounds error #570 (shawwn)
• fixed ffmpeg error reporting on Python 3 #565 (narfdotpl)
• Add int() wrapper to scroll to prevent floats #528 (tburrows13)
• Fix issue #464, repeated/skipped frames in ImageSequenceClip #494 (neitzal)
• fixes #248 issue with VideoFileClip() not reading all frames #251 (aldilaff)

Implemented enhancements:

• Use feature detection instead of version detection #721 (cclauss)
• Fixed Optional Progress Bar in cuts/detect_scenes #587 (scherroman)
• Fix travis build and enable pip caching #561 (mbeacom)
• Avoid mutable default arguments #553 (mbeacom)
• add ImageSequenceClip image size exception #550 (earney)

Merged pull requests:

• transitions.py: pep8 and a change to docstring #754 (tburrows13)
• Make TextClip work on Travis CI #747 (tburrows13)
• Added tests, new duration arg in to_ImageClip() #724 (tburrows13)
• let there be (more) colour #723 (bashu)
• Resolve undefined name unicode in Python 3 #717 (cclauss)
• Credits.py PEP 8 #715 (tburrows13)
• Added info about tag wiki #714 (tburrows13)
• Remove testing support for Python 3.3, closes #688 #713 (tburrows13)
• More PEP8 compliance #712 (tburrows13)
• More PEP8 compliance #711 (tburrows13)
• flake8 test to find syntax errors, undefined names #705 (cclauss)
• fix typo #687 (msrks)
• Update Readme.rst #671 (rlphillips)
• Update Dockerfile to add requests module #664 (edouard-mangel)
• fixed typo in library include #652 (Goddard)
• Use max fps for CompositeVideoClip #610 (scherroman)
• Add audio normalization function #609 (dspinellis)
• #600: Several YouTube examples in Gallery page won't load. #606 (Julian-O)
• Two small corrections to documentation. #605 (Julian-O)
• PEP 8 compatible #582 (gpantelis)
• add additional ImageSequenceClip test #551 (earney)
• General tests cleanup #549 (mbeacom)
• Update docs #548 (tburrows13)
• add tests for most fx functions #545 (earney)

• Overly Restrictive Requirements #767
• Using a gif as an ImageClip? #764
• How can I include a moving 'arrow' in a clip? #762
• How to call moviepy.video.fx.all.crop() ? #760
• ImportError: Imageio Pillow requires Pillow, not PIL! #748
• Fail to call VideoFileClip() because of WinError 6 #746
• concatenate_videoclips with fadein fadeout #743
• Ignore - sorry! #739
• Image becomes blurr with high fps #735
• Https protocol not found with ffmpeg #732
• Storing Processed Video clip takes a long time #726
• image corruption when concatenating images of different sizes #725
• How to install MoviePy on OS High Sierra #706
• Issue when running the first example of text overlay in ubuntu 16.04 with python3 #703
• Extracting frames #702
• Error - The handle is invalid - Windows Only #697
• ImageMagick not detected by moviepy while using SubtitlesClip #693
• Textclip is not working at all #691
• Remove Python 3.3 testing ? #688
• In idle, 25 % CPU #676
• Audio error #675
• Insert a ImageClip in a CompositeVideoClip. How to add nil audio #669
• Output video is garbled, single frames output are fine #651
• 'missing handle' error #644
• issue with proc being None #636
• Looping parameter is missing from write_gif_with_image_io() #629
• would it be optionally possible to use pgmagick package ? (instead of ImageMagick binary) #625
• concatenate_videoclips() can't handle TextClips #622
• Writing movie one frame at a time #619
• Fatal Python error: PyImport_GetModuleDict: no module dictionary! #618
• line 54, in requires_duration return #601
• test_duration() fails in test_TextClip() #598
• Geting framesize from moviepy #571
• Write_videofile results in 1930x1080 even when I force clip.resize(width=1920,height=1080) before write_videofile #547
• AttributeError: AudioFileClip instance has no attribute 'afx' #513
• ImageSequenceClip repeats frames depending on fps #464
• manual_tracking format issue #373
• resize video when time changed trigger a error #334
• WindowsError: [Error 5] Access is denied #294
• TypeError in Adding Soundtrack #279
• Defaults fail for ImageSequenceClip() #218
• audio normalization #32
• Unclosed processes. #19