[FFmpeg-devel] [PATCH] h264_slice: Copy the value of x264_build before calling h264_slice_header_init during thread init

[Derek Buitenhuis]

On 08/10/2018 19:23, Carl Eugen Hoyos wrote:
> I cannot reproduce ticket #7475 (it says "framerate num 30 den 1"
> no matter how many threads I use, tested with up to 8), and - more
> related to this patch - the sample from ticket #7475 reaches neither
> line 358 nor line 400 in h264_slice.c here when running the command
> shown in the ticket.
> 
> $ md5sum crew_cif_timecode-2.h264
> 43fbbb4ead1af31ed19dbb6582761d73  crew_cif_timecode-2.h264
> 
> Do you know what I am doing wrong?

Your MD5 matches mine. 

Running on Linux (vanilla Debian unstable), using the patch from the trac entry:
    $ ffmpeg -threads 1 -i crew_cif_timecode-2.h264 -f null -

I get this: https://pastebin.com/9TLB0ewm

And with:
    $ ffmpeg -threads 2 -i crew_cif_timecode-2.h264 -f null -

I get this: https://pastebin.com/upaJUXUA

Any value above 1 should be enough to reproduce.

It's possible it may only present itself on Linux (if you are on Windows).

- Derek