On Wednesday, August 11, 2021, Phyllis Smith via Cin <cin@lists.cinelerra-gg.org> wrote:
After testing and checking the code as best as I could, I added Andrew's 0001-Add-hidden-fast-slow-playback-preference.patch (mostly) into GIT.  It is a very creative and nice solution.  Additional testing by others would be helpful.

you probably can safely git checkout this file back to original (current git) state.. I do not think Andrea's test showed any improvement in openability of resulting edl.. 
I left this out as recommended. 
 
so i wondered if changing speed for fast/slow reverse and normal playback was possible..0001-Add-hidden-fast-slow-playback-preference.patch

after few hours of hacking I made this patch. 

it makes fast/slow playback speed configurable in Cinelerra_rc via new stored variables:
 To test add the following lines to $HOME/.bcast5/Cinelerra_rc with the value of speed that you want.
SLOW_SPEED .2
FAST_SPEED 4


I think in documentation better wording will be "4x faster and 5x slower" (because 20% of 100% speed is 1/5):

http://git.cinelerra-gg.org/git/?p=goodguy/cin-manual-latex.git;a=blobdiff;f=parts/Configuration.tex;h=6d04c915f55419353250bd3ff73ff6bad2ff0d49;hp=f92c6c22575adefaf54ff0a0b8cf61a91e53175a;hb=93df0d1b07800684ffb78666fb0f339917be0724;hpb=f163a24bcb2fcd4119bf20d8ea8508151f9d3638


"For example, adding the 2 lines FAST\_SPEED 4 and SLOW\_SPEED .2 to the end of the Cinelerra\_rc wile will result in playing at 4 times faster and 20\% slower."

unless I misread raw tex...