[FFmpeg-user] FFmpeg_Book.pdf 2.148

[Gyan Doshi]

On 2023-06-12 02:24 am, Michael Koch wrote:
> Am 11.06.2023 um 22:39 schrieb Cecil Westerhof via ffmpeg-user:
>> In FFmpeg_Book.pdf chapter 2.148 is about video stabilisation.
>> Part of the code is:
>>      ffmpeg -i %IN% -vf vidstabdetect -y dummy.mov
>>      del dummy.mov
>>      ffmpeg -i %IN% -vf vidstabtransform -y %OUT%
>>
>> But line two removes what is generated in line one. So what are thos
>> two lines doing?
>>
>
> It's described in the documentation for those two filters. The 
> vidstabdetect filter has two outputs. The stabilization data is 
> written to a file "transforms.trf", and the output of the filter chain 
> is the same as the input. Because this output isn't required, it can 
> be deleted.

The first command will go through with encoding the filter output and 
then saving it.

Just change to

   ffmpeg -i %IN% -vf vidstabdetect -an -f null -

and remove line 2.

Regards,
Gyan