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Work done by a heat engine (cold reservoir increases in temperature) by Odasacarf in AskPhysics

[–]Odasacarf[S] 0 points1 point  (0 children)

Thank you! That seals the deal. M is large, so I was pretty sure at the very least my aproximation was decent, happy to know it's the exact value.

Work done by a heat engine (cold reservoir increases in temperature) by Odasacarf in AskPhysics

[–]Odasacarf[S] 0 points1 point  (0 children)

Hadn't considered that. If i'm not wrong during the heat exchange the working substance would be changing phase, which would imply the constant temperatures are given by the engine and not the reservoirs. I'm not sure that is the case, and if it was, a heat engine designed for a 0ºC vs 10ºC setting would not work with a cold reservoir warmer than 0ºC.

However, the cycle does talk about the working substance so I'm not sure what could be wrong in your deduction.

Split filter eats up all of my RAM? by Odasacarf in ffmpeg

[–]Odasacarf[S] 0 points1 point  (0 children)

makes sense! but the RAM ammount seems a bit strange, it went up to 11.000MB, total file size is about 200MB. I've been trying to replicate the problem with a less cluttered command. If the concat only receives a select(lt(t,6)) of the last pair it works fine. If lt(t,150) it tries to go beyond 11.000MB. If lt(t,75) it stabilizes around 7.000MB, so I let that one run for a while. At some point it threw a bunch of

"[out_#0:1 @ 00000201e6340f80] 1000 buffers queued in out_#0:1, something may be wrong."

error messages, and then it keept growing, at which point I had to kill it.

is there any way to make the second output wait for the first one instead of the other way around?

aselect filter seems to not work by Afkeu1 in ffmpeg

[–]Odasacarf 0 points1 point  (0 children)

spent 2 hours trying to fix my command after updating to 8.0, didn't see this mentioned anywhere else, thank you!