[FFmpeg-devel] [PATCH] mpeg4video: Add support for MPEG-4 Simple Studio Profile.

Carl Eugen Hoyos ceffmpeg at gmail.com
Mon Jan 22 04:41:51 EET 2018


2018-01-22 3:35 GMT+01:00 Marton Balint <cus at passwd.hu>:
>
>
> On Mon, 22 Jan 2018, Carl Eugen Hoyos wrote:
>
>> 2018-01-21 23:48 GMT+01:00 Kieran Kunhya <kieran618 at googlemail.com>:
>>>
>>> On Sun, Jan 21, 2018 at 10:06 PM, Carl Eugen Hoyos <ceffmpeg at gmail.com>
>>> wrote:
>>>
>>>> 2018-01-21 22:45 GMT+01:00 Kieran Kunhya <kieran618 at googlemail.com>:
>>>> > On Sun, Jan 21, 2018 at 2:42 PM, Carl Eugen Hoyos <ceffmpeg at gmail.com>
>>>> > wrote:
>>>> >
>>>> >> 2018-01-21 15:34 GMT+01:00 Kieran Kunhya <kieran618 at googlemail.com>:
>>>> >> >>
>>>> >> >> Only that I can not reproduce without your patch (and that I have
>>>> >> >> never seen this issue before).
>>>> >> >>
>>>> >> >> Carl Eugen
>>>> >> >>
>>>> >> > I cannot reproduce this issue with ffplay on Ubuntu Linux.
>>>> >> > I would recommend running "make distclean" and recompiling.
>>>> >>
>>>> >> My last test was done with "make distclean".
>>>> >
>>>> > Does this happen in single threaded mode?
>>>>
>>>> Also happens with "ffplay -threads 1"
>>>>
>>>> > Are you able to run ffplay under tsan?
>>
>>
>> Does ffplay work for you at all under tsan?
>>
>>>> ffplay does not like tsan here (segfaults), ffmpeg shows
>>>> many thousand lines (!) of tsan output for the ssp files we
>>>> have (first frame only): Do you want me to send them?
>>>
>>>
>>> I can only conclude this is an ffplay problem.
>>
>>
>> Then please give Marton (and Michael) a few days to
>> comment.
>
>
> I cannot reproduce this (I am on openSuSE 42.3, x86_64, gcc 4.8.5,
> SDL-2.0.3).

Then it may be my system.

> FFplay works here with tsan, it reports some data races, but frames are
> being shown slowly but surely if ffplay is run with -noframedrop.

As said, it works sometimes here.

> Are you sure you applied the newest version of this patch and the
> simple_idct template patch?

Yes, and I also use SDL-2.0.3.

Carl Eugen


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