[FFmpeg-devel] [PATCHv2] ffmpeg: modify tty state when stderr is redirected

Ganesh Ajjanagadde gajjanag at mit.edu
Mon Oct 12 14:14:14 CEST 2015


On Mon, Oct 12, 2015 at 8:03 AM, Michael Niedermayer
<michael at niedermayer.cc> wrote:
> On Mon, Oct 12, 2015 at 01:46:19PM +0200, Michael Niedermayer wrote:
>> On Fri, Jul 31, 2015 at 01:48:18PM +0200, Nicolas George wrote:
>> [...]
>> >    -> "ttyctl -f" in ~/.zshrc, "bash_tty_mode=$(stty -g);
>> >    PROMPT_COMMAND='stty $bash_tty_mode'" in ~/.bashrc; that can be added in
>> >    the FAQ or the wiki.
>>
>>
>> the patch was applied and this does not work
>>
>> the first segfault i see breaks the terminal
>>
>> a testcase is a script like:
>> #!/bin/sh
>> valgrind ./ffmpeg_g -i matrixbench_mpeg2.mpg -encryption_key 0123456789abcdef0011223344556677  -encryption_iv aabbccddeeff11335577999876542222  crypto:file-crypt.nut
>>
>> (with the aesni patches or anything else that causes a segfault)
>>
>> ls -alF /bin/sh
>> lrwxrwxrwx 1 root root 4 Mar 29  2012 /bin/sh -> dash*
>> (this is default on ubuntu)
>
> i think i got it working as long as bash is the users shell with
> the suggested stty commands

So it does not work with dash?

>
>
> [...]
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> Let us carefully observe those good qualities wherein our enemies excel us
> and endeavor to excel them, by avoiding what is faulty, and imitating what
> is excellent in them. -- Plutarch
>
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