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• Adding FFMPEG support to Chromium Portable on Windows without recompiling

  13 décembre 2023, par Ashby

  I am using Chromium portable on Windows recently.

  


  I downloaded Chromium portable from chromium.org, finding it without FFMPEG support, which means playing media just not possible for some websites.

  


  Is there a simple or a little complex hack or plugin or patches to make FFMPEG on Chromium portable from chromium.org work ? Thanks.

  


  Due to personal reasons I am not intended to use Google Chrome for some months, due to its automatic updates something like Windows Update, making me annoyed.

  


  On Linux, I know there is a package called chromium-codecs-ffmpeg-extra, which makes FFMPEG support possible. But I do NOT find something similar on Windows.

  


  Recompiling Chromium costs hours and I just do not want to use some third-party Chromium releases due to security requests.

  


  Years have gone and past questions years ago on stackflow just not cater my need today.

  


  Thanks for your patience & understanding.

  


• faster way to downmix 5.1 videos to stereo ?

  22 octobre 2020, par alex hansen

  I have a hand full of movies that are all in 5.1 audio, i need there to be one audio track that is only in stereo. i have found a few suggestions as to how to do this but some dont work for me and others are way too slow.

  


  the one i found that works the fastest is this :

  


  ffmpeg -y -i "input" -map 0:v -c:v copy -map 0:a:0? -c:a:0 copy -map 0:a:0? -c:a:1 aac -ac 2 -metadata:s:a:1 title="Eng 2.0 Stereo" -map 0:a:1? -c:a:2 copy -map 0:a:2? -c:a:3 copy -map 0:a:3? -c:a:4 copy -map 0:a:4? -c:a:5 copy -map 0:a:5? -c:a:6 copy -map 0:a:6? -c:a:7 copy -map 0:s? -c:s copy "output"   


  


  sadly i do not remember where it came from.

  


  the problem with this being that it creates a separate audio track, and for my purposes this does not work.

  


  doing just the standard -ac 2 works but is way to slow, i estimated to take over 40 hours to go through all my movies.

  


  edit :
a bit of extra information to throw in here

  


  

  • all the movies are mp4's

  


  • all except 2 movies are 5.1 audio (there is 1 7.1 and 1 mono. i dont really care about them tho)

  


  • the command i posted runs at about a 40x speed while just doing -ac 4 runs at 2x speed

  


  


• Concat lots of audio files to a video with ffmpeg [closed]

  22 mars, par Sulli

  I’m using this ffmpeg command to add audio effects at certain times to a video file :

  


  ffmpeg -i C:\path\to\video.mp4 -i C:\path\to\audio1.wav -i C:\path\to\audio2.wav -filter_complex "[1]adelay=0|0[a1]; [2]adelay=960|960[a2]; [a1][a2]amix=inputs=2[a]" -map 0:v:0 -map [a] -c:v copy -c:a aac -b:a 192k -loglevel error -y C:\path\to\output.mp4


  


  it works, but when I want to add LOTS of audio effects (like more than 200), I get errors like

  


  An unexpected error occurred: [WinError 206] The filename or extension is too long


  


  As it seems to be a command length problem, I might be able to overcome this by using files to read inputs and/or filters, but I have spent the last hours without finding the correct command syntax or file format to achieve that. How can I do that ?