[Tools-discuss] Re: Session audio recording

[Rob Sayre <[e-mail]>]

Well it makes sense, sort of. Even though hosting the files would not be
expensive, someone has to take care of it, and it is a different task than
writing Python and HTML while dealing with IETF details. I think it would
be easy to put them on S3 or equivalent (Cloudflare, etc have competitors
and the API is open, so the AWS tools work with most of them). That would
create an ever-increasing bill as we add recordings.

In the meantime, it occurred to me that Ekr can use the "youtube-dl" tool
to make this work right now.

https://github.com/ytdl-org/youtube-dl/blob/master/README.md#readme

-x, --extract-audio          Convert video files to audio-only files
                                     (requires ffmpeg/avconv and
                                     ffprobe/avprobe)

thanks,
Rob

On Thu, Nov 6, 2025 at 7:49 AM Tom Pusateri <[e-mail]> wrote:

> I have discussed this in the past for use with the mobile apps.
>
> I had asked for all the individual raw files be archived for audio and
> video but this request was rejected. The problem seemed to be that the IETF
> didn’t want to provide the storage for this. So they generate a file to
> upload to YouTube and delete the originals.
>
> I wanted to play around with different ways to present the audio and video
> through the mobile apps such that you could have just audio and have it
> play in the background while driving or on a walk. Or switch between video
> and high quality synchronized slides.
>
> I also experimented with speech to text systems and speaker identification
> algorithms. But without a reliable source of the audio files, I lost
> interest in the project.
>
> Tom
>
>
> > On Nov 5, 2025, at 11:05 PM, Rob Sayre <[e-mail]> wrote:
> >
> > Oh, some of them do have .m3u but I am not sure how that works. Maybe
> just a few paragraphs of documentation, since the feature already seems to
> be there  (but only sometimes? idk). How do we get the headphones link
> there?
> >
> > thanks,
> > Rob
> >
> > (not unaware that I am sending "how do I get the headphones button?" to
> an IETF list)
> >
> >
> > <Screenshot 2025-11-05 at 8.02.10 PM.png>
> >
> >
> >
> > On Wed, Nov 5, 2025 at 2:50 PM Eric Rescorla <[e-mail]> wrote:
> >
> >
> > On Wed, Nov 5, 2025 at 2:46 PM Watson Ladd <[e-mail]>
> wrote:
> >
> >
> > On Wed, Nov 5, 2025, 2:38 PM Eric Rescorla <[e-mail]> wrote:
> >
> >
> > On Wed, Nov 5, 2025 at 2:32 PM Rob Sayre <[e-mail]> wrote:
> >
> >
> > On 11/5/25 1:02 PM, Eric Rescorla wrote:
> > > Is there a straightforward way to just get the audio recording for a
> > > given session?
> > >
> >
> > Hi,
> >
> > It's a fair question--sometimes they have had links for that from
> > MeetEcho, but this time around it seems like there are no mp3 files,
> > only YouTube and Cloudflare video (which confusingly looks like
> > SoundCloud?).
> >
> >
> > These should be on BitTorrent, but in practice it doesn't matter.
> > YouTube works fine and the video overhead isn't too bad because it's
> > just slides that don't really change most of the time over each frame,
> > and you need to show the "Note Well" without wasting everyone's time by
> > reading it out.
> >
> > What I'm looking to do here is not to avoid the bandwidth associated with
> > the video but to be able to download the audio so I can feed it into
> > a speech to text model.
> >
> > The model can also give you the baroque (is there any other kind) of
> ffmpeg invocation to strip out just the audio.
> >
> > Indeed it could, if the video were available for download at some
> official URL.
> >
> > -Ekr
> >
> >
> > -Ekr
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>
>