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@@ -7,47 +7,6 @@ that were not available as pre-recorded videos. It's a great way to
help speakers get stuff out of their heads and into a form we can all
learn from. Here's a process for doing so.
-# Skim the transcript and the videos to see if anything needs to be removed, and which video to use
-
-BigBlueButton gives us the webcams and audio as one video
-(`--bbb-webcams.webm`) and the screenshare (if any) as another video
-(`--bbb-deskshare.webm`). If the speaker shared their screen, we can
-focus on that instead of their webcam. The following ffmpeg command
-combines the audio from the webcams (which has been previously
-extracted into a separate file, `--bbb-webcams.opus`) with the video
-from the screenshare.
-
- ffmpeg -i example--bbb-webcams.opus -i example--bbb-deskshare.webm -c copy example--answers.webm
-
-We also want to check if people accidentally shared sensitive
-information on their screen, or if anyone said something that they
-might not have said if they remembered that thethe Q&A videos will be
-shared after the talk. Sometimes there's some time before we get
-around to closing the meeting at the end of the Q&A. Usually, a quick
-read of the transcript will show anything that needs to be trimmed.
-Here's how to stop the recording at a specified time:
-
- ffmpeg -i input.webm -to hh:mm:ss -c copy output.webm
-
-Cutting out stuff from the middle of a recording is slightly more
-complicated. It might be easier to use a nonlinear video editor such
-as kdenlive to edit the video. If you want to use ffmpeg, using
-filters to select the frames and reencode the video will probably work
-out better than splitting the file into multiple parts and then
-concatenating them without reencoding, as the latter tends to need to
-be split on keyframes. Here's a sample command based on this
-[StackOverflow](https://stackoverflow.com/questions/64866231/remove-a-section-from-the-middle-of-a-video-without-concat) answer that removes the section between 15 seconds and
-45 seconds:
-
- ffmpeg -i input.webm \
- -vf "select='not(between(t,15,45))', setpts=N/FRAME_RATE/TB" \
- -af "aselect='not(between(t,15,45))', asetpts=N/SR/TB" \
- output.webm
-
-Alternatively, you can let us know what parts needs to be trimmed, and
-we can figure that part out.
-
-
# Add chapter markers
Chapter markers make it easier for people to jump to the part of the