On Fri, 13 Dec 2024, 16:38 Romain Beauxis, <romain.beau...@gmail.com> wrote:
> Le ven. 13 déc. 2024 à 16:42, Romain Beauxis > <romain.beau...@gmail.com> a écrit : > > > > This patch adds parameters to pick specific ports for the two FEC error- > > correction streams associated with a Pro-MPEG CoP #3-R2 FEC streams. > > > > Radio France is currently interested in using this technology to do > > error-correction on some of their stream. In this context, they may not > > have full control over their available UDP ports and would like to be > able to > > pick any two ports for these streams. > > > > The specifications for this protocol is available online: > https://www.yumpu.com/en/document/read/8808550/pro-mpeg-code-of-practice-3-release-2-pro-mpeg-forum > > > > In section 5.2, page 14, port assignments for the FEC streams are under > > "shall" thus the changes in this patch should still be valid w.r.t. the > > specs. > > A bit surprised, as I re-read the specs now, to learn that "shall" is > to be interpreted as a mandatory requirement while, usually, "must" is > used. My understanding of the English language has failed me once > more! > > Still, I believe that this patch should be useful (shall, if > considering the use-case I came from!). > > What FEC receivers allow custom port selection? All the ones I've seen expect +2 and +4. If they are internally mapping to +2 and +4, I am not sure it's a good idea that FFmpeg features are added to work around someone's firewall limitation. Kieran _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
