Bug 475068

Summary:	=media-video/handbrake-0.9.9 - system ffmpeg breaks PGS subtitle processing
Product:	Gentoo Linux	Reporter:	BT <amak79>
Component:	Current packages	Assignee:	Tom Wijsman (TomWij) (RETIRED) <tomwij>
Status:	RESOLVED TEST-REQUEST
Severity:	normal	CC:	thev00d00
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://forum.handbrake.fr/viewtopic.php?f=13&t=27581
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	emerge --info

Description BT 2013-06-28 06:47:53 UTC

Whenever I try to encode a blu-ray (dumped via MakeMKV) that has PGS subtitles I get segmentation fault.

The following is all I get from gdb.

#0  0x00007ffff6a98ef3 in avcodec_decode_subtitle2 () from /usr/lib64/libavcodec.so.54
#1  0x0000000000466bf3 in ?? ()
#2  0x0000000000486b32 in ?? ()
#3  0x000000000045934b in ?? ()
#4  0x00007ffff431cec6 in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffff19c56ed in clone () from /lib64/libc.so.6

This issue was raised on the HandBrake forum (see bug url) and the solution was to use bundled ffmpeg. I understand this is not an option for Gentoo. Are there any other possible solutions?

Comment 1 BT 2013-06-28 06:48:11 UTC

Created attachment 352142 [details]
emerge --info

Comment 2 Tom Wijsman (TomWij) (RETIRED) gentoo-dev

2013-06-28 11:54:59 UTC

I'll look into making bundled available through an USE flag. The last comment seems to say something about version; so, I'm wondering whether this might be fixed in newer versions (or if not, if a patch was sent upstream for this)...

Comment 3 Ian Whyman (thev00d00) (RETIRED) gentoo-dev

2013-06-29 17:38:36 UTC

Can you confirm if this affects libav also? Upstream bundle libav rather than ffmpeg so that could be a starting point.

Comment 4 BT 2013-06-29 23:44:06 UTC

I switched to libav-9.7 and no segfault. With ffmpeg, handbrake would always segfault before the encode got to 1% complete.

Comment 5 Ian Whyman (thev00d00) (RETIRED) gentoo-dev

2013-07-05 18:55:15 UTC

Can you confirm whether it works with the tightened up ffmpeg dep?

Thanks for your help with this!

Comment 6 BT 2013-07-06 01:36:05 UTC

It doesn't work.

I assume HandBrake wants ffmpeg-1.2.1. That's the version I had when I first encountered this issue and the version that's installed now.

Comment 7 Ian Whyman (thev00d00) (RETIRED) gentoo-dev

2014-02-06 21:39:33 UTC

Any update on this?

Upstream only supports very specific libav versions, so give a libav:9 ebuild a try if you are still struggling.

Comment 8 BT 2014-02-07 00:04:38 UTC

I made the switch to libav 6 months ago because of this bug and have not had any problems since.