Recherche avancée

Sur d’autres sites (11266)

• How to Convert WAV to MP3 in Pure Python without using External Binaries

  7 novembre 2023, par mrfakename

  Is there any way to convert a WAV file to MP3 in pure Python without using any external binaries (ie FFMPEG), but to have the conversion done in pure Python ?

  


  I looked into using PyDub but it uses FFMPEG.

  


  Thanks in advance !

  


• ffmpeg and chromaprint using ffmpeg-fluent

  1er novembre 2024, par NotSimon

  I'm using fluent-ffmpeg in a project and I'm hoping to use chromaprint to determine a song's audio fingerprint.

  


  I'm using jrottenberg/ffmpeg docker image 5.1-ubuntu2204 to provide me with ffmpeg in my docker environment, and when I look at the docker image, it looks like they added chromaprint, but it's not clear to me if that is fully compiled into it. I'm assuming yes ? I guess that's part one of my question.

  


  The second part of my question is how—if it is compiled into ffmpeg, how I can use it in fluent-ffmpeg ? I feel like I might need to write a custom command but it's not actually clear to me how to do that.

  


  Here's what I think is the chromaprint source in ffmpeg and the file reference. And here's the ffmpeg docs https://ffmpeg.org//ffmpeg-formats.html#chromaprint-1

  


  Edit, so just adding chromaprint as an .outputOption doesn't work, and it gives me this as part of the error :

  


  configuration: --disable-debug --disable-doc --disable-ffplay --enable-fontconfig --enable-gpl --enable-libaom --enable-libaribb24 --enable-libass --enable-libbluray --enable-libfdk_aac --enable-libfreetype --enable-libkvazaar --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libsrt --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg --enable-libzmq --enable-nonfree --enable-openssl --enable-postproc --enable-shared --enable-small --enable-version3 --extra-cflags=-I/opt/ffmpeg/include --extra-ldflags=-L/opt/ffmpeg/lib --extra-libs=-ldl --extra-libs=-lpthread --prefix=/opt/ffmpeg


  


  which doesn't have --enble-chromaprint in it, which leads me to believe that jrotenberg/ffmpeg doesn't actually have chromaprint enabled.

  


  Edit 2 : Yep, it looks like chromaprint was only added to versions 4.4 and below, not to the later versions. I opened a ticket for that here.

  


• Chiptune Database and API

  14 septembre 2012, par Multimedia Mike — General

  So I set out to create a website that allows people to easily listen to video game music directly through their web browser. I succeeded in that goal. However, I must admit that the project has limited appeal since the web player is delivered via Chrome’s Native Client technology, somewhat limiting its audience. I’m not certain if anyone really expects NaCl to take off in any serious way, but I still have a few other projects in mind.

  I recently realized that, as a side effect of this project, I accidentally created something of significant value to fans of old video games and associated music– a searchable database of chiptune music and metadata. To my knowledge, no one else has endeavored to create such a thing. I figured that I might as well make the database easily accessible with an API and see where it leads.

  To that end, I created 2 API entry points. First, there is the search API located at http://gamemusic.multimedia.cx/api/search/. This can be exercised by ending the URL with a URL-encoded search string, e.g. : http://gamemusic.multimedia.cx/api/search/super+mario. This returns JSON data containing an array of results in decreasing order of relevance. Each result has a game title, database ID, media URL, system type, and an SHA-1 hash. This is the same API that the site’s own search page uses.

  The database ID can be plugged into http://gamemusic.multimedia.cx/api/metadata/ to retrieve the song’s metadata in JSON format. E.g., the ID for Super Mario Bros. 3 on the NES is 161 : http://gamemusic.multimedia.cx/api/metadata/161.

  I recently read an article about sins against true RESTful API principles which led me to believe I’m almost certainly doing this web API stuff wrong. I don’t think it’s a huge deal, though, since I don’t think anyone actually listens to chiptunes any more. But if there are offline chiptune music players that are still in service and actively maintained, perhaps the authors would like to implement this API. It would require some type of HTTP networking library, a JSON parser, the embedded XZ decoder, and some new code to parse through my .gamemusic and .psfarchive formats.

  This database could be a significant value-add to chiptune playback software, and could help people experience classic game music much more easily.