[FFmpeg-devel] [PATCH] Revert "avformat/flvdec: Check that sizes match and resync if not"

[wm4]

On Fri, 2 Oct 2015 00:06:24 +0200
Michael Niedermayer <michaelni at gmx.at> wrote:

> On Thu, Oct 01, 2015 at 11:33:27PM +0200, wm4 wrote:
> > On Thu, 1 Oct 2015 21:08:39 +0000 (UTC)
> > Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> > 
> > > wm4 <nfxjfg <at> googlemail.com> writes:
> > > 
> > > > This reverts commit cbbd906be6150be38dfc14b6bc67dcac8da8aea4.
> > > > 
> > > > It broke rtmp fatally, at least some cases of it.
> > > 
> > > You don't want to share some of them with us?
> > 
> > This is a bit hard, because it's some site accessed through youtube-dl
> > (youtube-dl extracts the current URL, encryption keys etc. - just
> > handling out an URL won't do). I haven't tested yet if this happens
> > with all rtmp URLs.
> 
> can you provide uncut ffmpeg output from the failure? it should contain
> information about the resync/mismatches even if the URLs&keys cannot
> be used.

I didn't use ffmpeg, and although it would have been possible, it's
complicated to extract and set all these rtmpe extra parameters.

> also what generated the rtmp stream that fails?

I have no idea. But the flv stream is of course produced by
libavformat. I've dumped part of this stream: https://0x0.st/z0e.flv

(I realize it also might be a problem with how the rtmpe protocol
generates the flv stream.)