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• ffprobe to bitrate variable stopped working

  6 novembre 2023, par Bricktop

  I have a simple script to encode a video using the same bitrate as the original. I use ffprobe to fetch the bitrate like this :

  


  ffprobe "%file%" -v 0 -select_streams v:0 -show_entries stream=bit_rate -print_format compact=p=0:nokey=1 >%temp%\bitrate.txt


  


  However, while fixing a but in the script where I had an odd number of " marks, I suddenly ran into this problem with ffprobe :

  


  Argument ' -v 0 -select_streams v:0 -show_entries stream=bit_rate -print_format compact=p=0:nokey=1 >C:\Users\ADMINI~1\AppData\Local\Temp\bitrate.txt' provided as input filename, but 'D:\VIDEO\AMBIANCE\SCOPITONE\MUSIC TELEVISION\This Here - Calm - OFFICIAL VIDEO (1080p 25fps AV1-128kbit AAC).mp4' was already specified.


  


  I am trying to understand this, scanning insanely for yet another " or something in my code but can't figure it out. Here is the full code :

  


  :: write file to queue (first)
move /y "%~dpn0.txt" "%temp%\%~n0.tmp" >nul
echo "%~1" >"%~dpn0.txt"
type "%temp%\%~n0.tmp" >>"%~dpn0.txt"

:: desyncronize instances (todo: try support for adding 9 files at a time)
timeout /t %time:~9,1% /nobreak
:: if not first instance exit
tasklist /fi "imagename eq handbrakecli.exe" | find /i "handbrakecli" && exit
title Transcode

:: delegate queue
for /f "delims=" %%f in (%~dpn0.txt) do (
    set "name=%%~nf"
    set "file=%%~f"
    rem todo: if file has x264 or other video codec mentioned, change to x265
    set "code=%%~dpnf (x265 transcoded)%%~xf"
    call :transcode
)
echo all done!
exit /b

:transcode
title "%name%"
if not exist "%file%" echo %date% %time% source file missing %file% >>%~dpn0.log & goto cleanup
if exist "%code%" echo %date% %time% target file exists %file% >>%~dpn0.log & goto cleanup

:: determine appropriate bitrate (does not seem to work on .webm files, closing the script as a result)
%~dp0ffprobe "%file%" -v 0 -select_streams v:0 -show_entries stream=bit_rate -print_format compact=p=0:nokey=1 >%temp%\bitrate.txt
set /p bitrate=<%temp%\bitrate.txt
:: reduce to full kilobytes
set "bitrate=%bitrate:~0,-3%"
if not defined bitrate echo failed to fetch bitrate & echo %date% %time% no bitrate for %file% >>%~dpn0.log & exit /b
if %bitrate% gtr 7000 set bitrate=7000

:: transcode
%~dp0HandBrakeCLI -i "%file%" -o "%code%" --encoder x265_10bit --encoder-preset slow --encoder-profile main444-10 --vb %bitrate% --two-pass --turbo --audio 1-9 --aencoder copy --audio-copy-mask aac,ac3,mp2,mp3,opus --audio-fallback opus --ab 160 --drc 2.0

:: remove current file from queue, regardless
:cleanup
findstr /v /c:"%file%" "%~dpn0.txt" >"%temp%\%~n0.tmp"
move /y "%temp%\%~n0.tmp" "%~dpn0.txt"


  


  It appears that the set "file=%%~f" is the problem, somehow it shows up as set "file=D:\VIDEO\this video here.mp4" " where the last two characters " should not belong, and I don't know what to change to fix this.

  


  Every type of improvement to the script is very welcomed !

  


• mov : Disable advanced_editlist for fragmented MP4 input

  28 décembre 2022, par Derek Buitenhuis

  mov : Disable advanced_editlist for fragmented MP4 input
  Advanced edit list support is entirely broken for fragmented MP4s,
  
  currently. mov_fix_index is never run in mov_build_index, since
  
  in fragmented MP4s the stco, stsz, stts, and stsc boxes have zero
  
  entries, with the index being filled in as each fragment's trun
  
  box is seen.
  The result of this is that the skip samples is never set properly,
  
  since half the code thinks it doesn't need to, as advanced_editlist
  
  is enabled, but as mov_fix_index is never called, it doesnt get set.
  
  This means that any edits for e.g. priming are not properly applied
  
  as skip samples side data.
  This also means remuxing to fragmented MP4 from progressive MP4 with
  
  lavf will quietly drop the edit list, currently.
  Example :
      $ ffmpeg -loglevel quiet -advanced_editlist 1 -i non_fragmented.mp4 -f md5 -
  
      MD5=d02d929f8eb4edef624758a298d5f7c6
  
      $ ffmpeg -loglevel quiet -advanced_editlist 0 -i non_fragmented.mp4 -f md5 -
  
      MD5=d02d929f8eb4edef624758a298d5f7c6
  
      $ ffmpeg -loglevel quiet -advanced_editlist 1 -i fragmented.mp4 -f md5 -
  
      MD5=e38b110f586fa886ff94e0ca98a95d59 <— wrong, extra samples are output instead of being skipped
  
      $ ffmpeg -loglevel quiet -advanced_editlist 0 -i fragmented.mp4 -f md5 -
  
      MD5=d02d929f8eb4edef624758a298d5f7c6
  We cannot call mov_fix_index after reading a trun box
  
  since mov_fix_index seems to assume it is only called once, on a
  
  fully complete index, an multiple calls to it don't seem like
  
  they'd work, so the "best" option seems to be disabling advanced
  
  edit list support entirely for the time being, as it is broken
  
  for these types of files.
  Signed-off-by : Derek Buitenhuis <derek.buitenhuis@gmail.com>
  

  • [DH] libavformat/mov.c

• Evolution #4080 : Raccourci puce : se débarasser de l’image

  1er octobre 2018

  Je vote pour le caractère
  https://unicode-table.com/fr/2023/

  Voici un test chez moi en local sur SPIP 3.2, la dist et Firefox Windows (bref 100% vanille)