How The FFmpeg Parser Parses

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Published on ● Video Link: https://www.youtube.com/watch?v=szcNb8oGeqU



Duration: 50:37
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How The FFmpeg Parser Parses


A long boring demonstration of how the FFmpeg parser handles extra WHITESPACE and the role of WHITESPACE in the tokenization process.


The music dub:
'Funeral March (by Chopin)' by Chopin
Music is from YouTube Audio Library
and does not require attribution.


Remember: you are listening to an idiot running his mouth.
Disclaimer: This episode is neither a promotion nor a recommendation any product or service, but does reflect my personal experiences.
Disclaimer: This episode is presented with ABSOLUTELY NO WARRANTY WHATSOEVER.


This episode was rendered using FFmpeg utility exclusively and entirely:

The command line:
ffmpeg.exe ^
-i 813.jpg ^
-ss 209.0 -t 3036 -i "2018-06-29-01-37-23-OBS.mkv" ^
-ss 208.9 -t 3036 -i "2018_0629__072-73-74-combined-dub.mp3" ^
-ss 0 -t 3036 -i "Funeral_March_by_Chopin-55m.mp3" ^
-filter_complex_script ffmpegHowtoParsingSpaces-ffmpeg-script.txt ^
-map [vid] ^
-map [aud] ^
-c:v libx264 -r 30 -x264opts keyint=15:min-keyint=15:scenecut=-1 ^
-c:a aac -ac 2 -ar 44100 ^
ffmpegHowtoParsingSpaces-ffmpeg.mkv


The filter_complex_script:
[1:v:0]fade=in:st=0:d=2 , fade=out:st=3033:d=3, eq=gamma=1.0[vfades1];
[2 ]volume=volume=8.0,afade=in:st=0:d=2,afade=out:st=3033:d=3[avol2];
[3 ]volume=volume=0.4,afade=in:st=0:d=2,afade=out:st=3030:d=6[music3];
[avol2][music3]amix=inputs=2[aud];
[vfades1]ass=subtitles01.ssa[vass1];
[vass1][0]overlay[vid]


Date: 26 JUNE 2018

[obs runcam ffmpeg audacity irfanview]







Tags:
SteveAB4EL
Steve AB4EL
ffmpeg
parsing
parser behavior
whitespace handling
tokenizing
'Funeral March (by Chopin)' by Chopin
technology
vlog
20180629_2_OBS_FFMPEG-PARSE-SPACES
20180701_1501__How_The_FFmpeg_Parser_Parses