_Gyan_

16 ms·

1.
by _Gyan_ 5y ago
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 fe
2.
by _Gyan_ 5y ago
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?
3.
by _Gyan_ 5y ago
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.
4.
by _Gyan_ 5y ago
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.
5.
by _Gyan_ 5y ago
> You already provided better lines for some of the options than what their docs state I wrote the docs section you refer to :) They are meant to be narrow and to the point, not didactic, not least because the codepath leading up to an o
6.
by _Gyan_ 5y ago
Think of ffmpeg as a universal translator. There are 100s of languages in use around the world, with their own syntax, vocabulary, writing system, formal and informal conventions ..etc. A universal translator framework cannot provide a besp
7.
by _Gyan_ 5y ago
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`
8.
by _Gyan_ 5y ago
> literally the only difference is the contents of the "ftyp" box, every other byte is identical. Not quite. There are some boxes acceptable in one but not the other. Strings inside MOOV are length-prefixed in MOV but null-term
9.
by _Gyan_ 5y ago
Except for many primate cities: https://en.wikipedia.org/wiki/Primate_city#List
10.
by _Gyan_ 5y ago
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
11.
by _Gyan_ 5y ago
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
12.
by _Gyan_ 5y ago
A profitable strategy only if it attracts a lot more prey than predators.
13.
by _Gyan_ 5y ago
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 cognitiv
14.
by _Gyan_ 5y ago
It's a shame that Graeme Garden and Barry Cryer appear to have retired.
15.
Top 100 3D Renders from the Internet's Largest CG Challenge(youtube.com)
1 points by _Gyan_ 5y ago|0 comments
16.
Human Cell Atlas(humancellatlas.org)
2 points by _Gyan_ 5y ago|0 comments
17.
by _Gyan_ 5y ago
FFmpeg already has registered channels there. Will update website within a day.
18.
by _Gyan_ 5y ago
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.
19.
by _Gyan_ 5y ago
It's not the first tracks. Read http://ffmpeg.org/ffmpeg.html#Stream-selection
20.
by _Gyan_ 5y ago
The first one will re-encode.
21.
by _Gyan_ 5y ago
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.
22.
by _Gyan_ 5y ago
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)."
23.
FFmpeg 4.4(ffmpeg.org)
365 points by _Gyan_ 5y ago|130 comments
24.
by _Gyan_ 5y ago
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 peop
25.
AV Artifact Atlas: errors and anomalies in video(avartifactatlas.com)
32 points by _Gyan_ 5y ago|0 comments
26.
by _Gyan_ 5y ago
Did you see https://doublecmd.sourceforge.io/gallery/ ?
27.
by _Gyan_ 5y ago
Can anyone who's used both, compare it with Directory Opus?
28.
by _Gyan_ 5y ago
UK schools were open most of the autumn/fall term. They have been closed since mid-December and reopened earlier this month. https://en.wikipedia.org/wiki/Impact_of_the_COVID-19_pandemi...
29.
by _Gyan_ 5y ago
From Association between living with children and outcomes from covid-19: OpenSAFELY cohort study of 12 million adults in England https://www.bmj.com/content/372/bmj.n628 " Conclusions In contrast to wave 1,
30.
by _Gyan_ 6y ago
The Indian govt. seems to agree. https://www.indiatoday.in/coronavirus-outbreak/story/night-c...

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