On 03/09/2020 03:39 PM, hydra3...@gmail.com wrote:
Well, I'm a dumb user and google gave me LOTS and LOTS of commandlines that work - simply
filter the google results by the "date in the last year" to be sure you get the
latest syntax. Lots.
You appear to continually avoid "what is it you wish to do with a specific example
video that you have" type questions...
That's a fair observation. You deserve a serious response. May I provide
perspective?
It appears to me that ffmpeg commands have the following structure:
ffmpeg A [[B ...] -i C [D ...]...] [[E ...] [F ...]...]
[[i ]...] : inputs
A : general options
[B ...] : input-specific pre-options
C : input URL
[D ...] : input-specific post-options
...[[]...] : outputs
[E ...] : output-specific filters
[F ...] : output URL
Full disclosure: I don't know if all of the above is correct.
Because ff* documentation is incomplete and disorganized, I have
requested folks to submit command lines that are known to work. I hope
to get thousands of them.
I hope they will send them to me as private messages.
I will then sort out commonalities in order to confirm/modify the above
template and to provide further clues regarding option meanings and usage.
and just pose generalities, looking like a complete troll, which is why people
are unhappy with your questioning approach.
Regarding 'questioning': I do not seek to question anything. I simply
seek command lines that are known to work. Regarding whether I'm a
troll, I'm sure you can make your own determination.
I occasionally have a problem working out a commandline to use a specific video
filter here and there, but googling and playing with it usually resolves the
issue.
Yes, I've pursued both methods.
Here's an example of commandline I sometimes use (the numbers are calculated in
a script and substituted into the commandline on the fly), so go for your life.
"C:\SOFTWARE\ffmpeg\0-homebuilt-x64\ffmpeg.exe" -v verbose -nostats -init_hw_device opencl=ocl:0.0
-filter_hw_device ocl -i "D:\TEMP\SCRATCH\example.mp4" -map_metadata -1 -vsync 0 -sws_flags
lanczos+accurate_rnd+full_chroma_int+full_chroma_inp -filter_complex
"[0:v]yadif=0:0:0,hwupload,unsharp_opencl=lx=3:ly=3:la=0.5:cx=3:cy=3:ca=0.5,hwdownload,format=pix_fmts=yuv420p"
-strict experimental -c:v h264_nvenc -pix_fmt nv12 -preset slow -bf 2 -g 50 -refs 3 -rc:v vbr_hq -rc-lookahead:v 32
-cq 22 -qmin 16 -qmax 25 -coder 1 -movflags +faststart+write_colr -profile:v high -level 5.1 -af
loudnorm=I=-16:TP=0.0:LRA=11:measured_I=-22.79:measured_LRA=15.70:measured_TP=-0.34:measured_thresh=-34.06:offset=0.40:linear=true:print_format=summary
-c:a libfdk_aac -cutoff 18000 -ab 384k -ar 48000 -strict experimental -movflags +faststart+write_colr -y
"T:\TEMP\example2.mp4"
Thank you!
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