• Added progress bars for all long-running operations (closes #18). ...

• Added new ProgressBar class.
• Switched from subprocess to pexpect for running shell commands.
• Added general shell quoting for debugging output of commands.
• Rewrote the way command strings and argument lists are generated.
• Removed “-loglevel error” from ffmpeg commands to enable capturing progress information (pexpect doesn’t echo the output anyway).

• Updated print_progress(): ...

– Added optional width argument.
    – Moved newline character to the start of the line rather than the end to stop the cursor overprinting the start of the progress bar.

• Fixed parsing bug that produced incorrectly structured timestamp lists when using a duration file (introduced by restructuring of grammar).

• Added print_progress() function and implemented progress bar for frame processing (partial progress—hah!—towards #18).

• Ensured that audio/video output options and filters are only included when there actually is an audio/video stream (closes #19). ...

• Rearranged exception handling on main() so that a KeyboardInterrupt is caught no matter where you are in the process.

• Removed some leftovers from the deleted --config-help option.

• Removed the --config-help option as there appears to be no easy way to create additional standalone help-style options with argparse (it complains that there aren’t enough arguments because the positional argument is missing). The help text has been put into a separate Markdown file instead. (closes #12)

• Moved frame segment post-processing into a function. ...

• Ensured warnings about unequal stream durations are only output if there is both an audio and a video stream (closes #20).
• Fixed obsolete leftover occurrence of “options” in VideoSegment.get_last_frame_number().

• Normalised terminology around “streams” (closes #21).

• Only print warning about differing audio and video durations when there’s actually some audio (may need further work?).

• Ensured that audio_stream_number and video_stream_number always default to None.

• Finished support for generating frames directly from PDF slides (closes #8). ...

• Specified defaults for audio and video stream numbers.
• Fixed some typos on comments and debug output.
• Added "/" as a valid filename character for config files.
• Added some comments explaining the more obscure class variables in the Segment class.
• Generalised Segment.generate_last_frame() into generate_frame().
• Ensured that generate_temp_file() returns the generated filename.

• Enabled --config-help option (no content yet).

• Updated help messages for --audio and --video to reflect ability to specify default stream number.

• Added support for default stream numbers on the command line (in the form filename:0). Includes a custom argparse action handler to split the stream number from the filename. NOTE: not fully tested! (closes #11)

• Removed --frame option (closes #10).

• Moved segment classes into separate module (closes #7). ...

• Moved global configuration into separate module.
• Made format of debug logging more consistent.
• Added a few more info logging messages.
• Renamed configuration parser module.

• Moved shell command classes into separate module.

• Added -pix_fmt output video option to ensure that concatenated segments have the same pixel format (especially for motion JPEG segments generated from still images). ...

• Also added “file not found” exception handling to FrameSegment.delete_temp_files().
• Deleted obsolete read_segments_from_file().

• Fixed spurious debugging output when not in debug mode.

• Added exception handler to catch irrelevant “file not found” errors when attempting to delete a temporary file. If it’s already been deleted, then great!

• Corrected logic for checking existence of previous segment. ...

• Fixed typo in error.

• Renamed concatenate_segments() to render_podcast(). ...

• Checked that frame segments actually refer to the previous segment before generating a temporary image for the previous segment.
• Checked that there is more than one segment before appending a concat filter. (Append a null filter otherwise to ensure the stream names are properly set up.)

• Added output file to ConvertCommand options. ...

• Fixed output of punch in/out errors.

• Moved into a subdirectory to make it tidier once the classes are broken out.