[FFmpeg-devel] [PATCH] dvbsub fix transcoding
Wim Vander Schelden
lists at fixnum.org
Thu May 22 15:13:18 CEST 2014
I seem to have misformulated my ordering issue in my earlier mail: the
problem occurs when subtitle X only disappears after subtitle X+1 should
start being displayed, as the "clear" packet for X is emitted immediately
after the "show" packet for X, so before the "show" packet for X+1.
On Thu, May 22, 2014 at 3:01 PM, Wim Vander Schelden <lists at fixnum.org>wrote:
> These subtitles not disappearing is exactly the issue that's introduced by
> sending the second (empty, "clearing") packet (by removing the nb = 2).
> Note that you are now relying on the DVB subtitle timeout value, which is
> only for "safety" purposes (ie, the encoder crashed), and is only required
> by the specification to be followed with a 5 second accuracy (so it is
> completely useless for functioning subtitles)!
> On Thu, May 22, 2014 at 2:55 PM, anshul <anshul.ffmpeg at gmail.com> wrote:
>> On 05/22/2014 05:42 PM, Carl Eugen Hoyos wrote:
>>> anshul <anshul.ffmpeg <at> gmail.com> writes:
>>> I tested your patch with the first sample from
>>>>> ticket #2024 (Starship_Troopers.vob) and as far
>>>>> as I can tell, it breaks the output. Does it work
>>>>> for you?
>>>> Yes,its work for me for 1st Video also
>>> Please run:
>>> $ ffplay Starship_Troopers.vob
>>> $ ffplay test.ts
>>> and compare carefully.
>>> Carl Eugen
>>> ffmpeg-devel mailing list
>>> ffmpeg-devel at ffmpeg.org
>> While comparing carefully, only issue that i find is that
>> subtitles(output) does not dissapear while they disappear in input.
>> I have attached new patch considering the issue that i noticed.
>> I really don't know what issue you noticed.
>> ffmpeg-devel mailing list
>> ffmpeg-devel at ffmpeg.org
More information about the ffmpeg-devel