[FFmpeg-devel] STF RaptorQ

[Lynne]

On 23/05/2025 08:55, Devin Heitmueller wrote:
> On Thu, May 22, 2025 at 7:42 PM Kieran Kunhya via ffmpeg-devel
> <ffmpeg-devel at ffmpeg.org> wrote:
>> I wanted to put on the record that adding RaptorQ to FFmpeg isn't
>> maintenance of FFmpeg.
>>
>> It's adding an obscure FEC protocol to FFmpeg, which is not going to be
>> implemented well without an event loop anyway.
>>
>> I do not think it's a suitable STF project.
> 
> I see the task on the TRAC page for STF 2025, and while intellectually
> interesting to a nerd like me who does lots of work with reliable
> protocols, I'm not confident this particular protocol makes much sense
> to work on, especially for 24,000 EUR.

It's not a protocol.

> I'm not sure I've seen any commercial gear that does RaptorQ for FEC,
> so it's not clear what the use cases are if the goal is
> interoperability.  If somebody really wants to be paid to work on
> reliable transport protocols, the time would be better spent improving
> the RIST or SRT integration, which is where most of the industry is
> putting their energy.

Again, it's not a protocol. It's an FEC algorithm. No current mainstream 
protocol specifies using it. It will take decades, at least, and it 
definitely cannot fit into existing protocols.

Custom closed-source video transmission protocols are using it.
But, I do believe it's the future for open-source protocols too.
> I agree with Kieran that this seems to largely be outside the STF
> objectives (i.e. sustainability for open source projects).Like I mentioned, I believe the STF is not maintenance-only, or so I gather.
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