[FFmpeg-devel] [PATCH] ffmpeg: block output == input for files

Gyan Doshi gyandoshi at gmail.com
Wed Aug 29 07:18:17 EEST 2018


On 29-08-2018 02:43 AM, Michael Niedermayer wrote:
> On Tue, Aug 28, 2018 at 08:31:51AM +0200, Marton Balint wrote:

>>
>> Instead of this, maybe we should add support to write lock the files when
>> opening them for reading. Then ffmpeg can request this. That would be an
>> useful option, and not just for unexperienced users.
> 
> depending on how this is done, it could interfere with reading a file while
> it is being written/appeneded to by another process

Yes, a user may use a growing MPEG-TS file as input.

Also, is there a universal & portable way to secure a write lock across 
all platforms?

I think a 'soft' solution is preferable.

Gyan


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