[FFmpeg-user] Alternative to Dynamic Text

[LianCheng Tan]

Sorry, need to give more details.

Due to drawtext that load textfile dynamically and when the textfile is inaccessible, the ffmpeg exited.


> On 3 Nov 2021, at 9:11 PM, Paul B Mahol <onemda at gmail.com> wrote:
> 
> On Wed, Nov 3, 2021 at 12:57 PM LianCheng Tan <tanlccc at gmail.com> wrote:
> 
>> I have tried to do what you have suggested. Somehow, it still cause ffmpeg
>> to crash at the exact moment the file is being renamed.
>> 
>> By the way, I am running in Windows environment. Not sure, if in Linux
>> will this issue occurs.
>> 
> 
> Top posting is not allowed here.
> What is exactly meaning about 'crash' ? Does it simply errors out or it
> dumps core?
> 
>> 
>> 
>>>> On 3 Nov 2021, at 12:49 PM, Adam Nielsen <a.nielsen at shikadi.net> wrote:
>>> 
>>> 
>>>> 
>>>> textfile/reload=1 is working.
>>>> 
>>>> However, the textfile is being updated by another process at every
>>>> second. This caused ffmpeg to crash after running sometime as the
>>>> ffmpeg unable to read the textfile when the other process is updating
>>>> it.
>>> 
>>> In the manpage it says the update has to be atomic, i.e. you should
>>> write your update to a different file, then move the new file over the
>>> top of the old one.  That way ffmpeg will always see either the new
>>> content or the old, and nothing in between.
>>> 
>>> Cheers,
>>> Adam.
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