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_Gyan_

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Top 100 3D Renders from the Internet's Largest CG Challenge

youtube.com
1 points·by _Gyan_·vor 5 Jahren·0 comments

Human Cell Atlas

humancellatlas.org
2 points·by _Gyan_·vor 5 Jahren·0 comments

AV Artifact Atlas: errors and anomalies in video

avartifactatlas.com
32 points·by _Gyan_·vor 5 Jahren·0 comments

comments

_Gyan_
·vor 5 Jahren·discuss
libav is a part of FFmpeg, and the heart of it. But FFmpeg isn't just a skeleton. Most decoders + protocols + demuxers / muxsers + filters + scaler + resampler are native components.

The most well-known 3rd party libs provide a few (albeit commonly used) video encoders. Of course, having interfaces for these external libs is what allows media operations to be consolidated into a single process workflow. As standalone tools, x264/x265 would be more cumbersome to integrate into a pipeline.
_Gyan_
·vor 5 Jahren·discuss
API/ABI is meant to be preserved within a major version, but not across. The deprecation period is typically two years, but deletion is usually much later.

Do you have examples to the contrary from the past few years?
_Gyan_
·vor 5 Jahren·discuss
For a few years, the default aac coder has been fast. But the twoloop coder is better but slower, and was made default in May 2021. Add `-aac_coder twoloop` (in older builds) and recheck.
_Gyan_
·vor 5 Jahren·discuss
With ffmpeg, use the below command to calculate maximum timestamps

    ffmpeg -i INPUT -map 0:v -map 0:a -enc_time_base -1 -c copy -f null -
Note the time= value at the end of the process.
_Gyan_
·vor 5 Jahren·discuss
For `-f h264`, `-bsf:v h264_mp4toannexb` is not needed. It will be automatically inserted as needed, with ffmpeg 4.0 or later.

For latency, specify a short GOP size, e.g. `-g 50`
_Gyan_
·vor 5 Jahren·discuss
Except for many primate cities: https://en.wikipedia.org/wiki/Primate_city#List
_Gyan_
·vor 5 Jahren·discuss
Don't think that's the main reason. Hollywood has no compunction or lack of skill to embellish or dramatize a mundane life if they need to.

I suspect Bach's place at the top is received rather than recognized, which is not to say he doesn't deserve it. His skill lays in counterpoint and other facets of harmony. His music has structural elegance and ornamental beauty, not the full orchestral rabble rousing of Beethoven or delicate pianism of Chopin. Not exactly directly translatable to a poster or trailer.
_Gyan_
·vor 5 Jahren·discuss
See a video with similar setup of a rocket launch constructed out of a timelapse photo sequence: https://www.youtube.com/watch?v=aJy1u-N3NY0
_Gyan_
·vor 5 Jahren·discuss
A profitable strategy only if it attracts a lot more prey than predators.
_Gyan_
·vor 5 Jahren·discuss
The intro of the actual paper* is ambivalent, rather than what the post title asserts.

"We critically examine relevant findings and argue that there is no clear evidence for detrimental lasting effects of digital technology on cognitive abilities."

*https://www.nature.com/articles/s41562-021-01162-0
_Gyan_
·vor 5 Jahren·discuss
It's a shame that Graeme Garden and Barry Cryer appear to have retired.
_Gyan_
·vor 5 Jahren·discuss
FFmpeg already has registered channels there. Will update website within a day.
_Gyan_
·vor 5 Jahren·discuss
It hasn't, since ffmpeg's inception. It's very unlikely - it would require that ffmpeg verify codec compatibility with the output muxer. Not all muxers have registered a codec tags list , so that can't happen.
_Gyan_
·vor 5 Jahren·discuss
It's not the first tracks. Read http://ffmpeg.org/ffmpeg.html#Stream-selection
_Gyan_
·vor 5 Jahren·discuss
The first one will re-encode.
_Gyan_
·vor 5 Jahren·discuss
There have been 2000 fixes related to fuzzer issues so far, averaging 400 fixes in recent years. Almost all of them are taken care of by Michael.
_Gyan_
·vor 5 Jahren·discuss
I don't see FFmpeg on there.

See https://link.springer.com/article/10.1007/s11214-020-00765-9

"The core EDL data processing and compression engine is powered by FFMPEG (ffmpeg.org)."
_Gyan_
·vor 5 Jahren·discuss
The primary endpoint is symptomatic infection, not any infection per se. And it's a bit of a kludge, as all the Phase III protocols I've read define symptomatic infection as X no. of symptoms for Y+ no. of days i.e. there are people with fewer symptoms who aren't counted (or even tested to check for infection).

The efficacy is the 1-relative risk of the primary endpoint.
_Gyan_
·vor 5 Jahren·discuss
Did you see https://doublecmd.sourceforge.io/gallery/?
_Gyan_
·vor 5 Jahren·discuss
Can anyone who's used both, compare it with Directory Opus?