[FFmpeg-devel] [PATCH] avformat/options_table: Set the default maximum number of streams to 100

[Ronald S. Bultje]

Hi,

On Sat, Dec 10, 2016 at 5:24 PM, Carl Eugen Hoyos <ceffmpeg at gmail.com>
wrote:

> 2016-12-10 14:07 GMT+01:00 Ronald S. Bultje <rsbultje at gmail.com>:
> > Hi,
> >
> > On Sat, Dec 10, 2016 at 7:11 AM, Carl Eugen Hoyos <ceffmpeg at gmail.com>
> > wrote:
> >
> >> 2016-12-09 12:56 GMT+01:00 Ronald S. Bultje <rsbultje at gmail.com>:
> >>
> >> > On IRC, we discussed at what values OOM start occurring, which
> >> > seems to be around 30k-60k
> >>
> >> This is not true, why do you think so?
> >
> > http://lists.ffmpeg.org/pipermail/ffmpeg-devel-irc/
> 2016-December/003980.html
>
> http://www.openwall.com/lists/oss-security/2016/12/08/1
> Iiuc (which isn't sure at all) this is about 26000 streams.


And how does that fundamentally change the discussion? The question was
about orders of magnitude (think powers of 10), so you just changes the
answer from log10(30k)=4.48 to log10(26k)=4.41. In both cases, a sensible
limit is something like exp10(3) or exp10(4), but exp10(2) is not necessary
IMHO,

Ronald