[FFmpeg-user] '-vf showinfo' PTSes are wrong

Since the change to '-vf showinfo', it now shows PTSes. Those PTSes appear to be bogus. They don't match the PTSes reported by framecrc. They don't match at all. --Mark. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/list

[FFmpeg-user] Find frames, worth to compare

I use  ffmpeg for compression. The result I do compare with https://github.com/vivictorg/vivictpp Is there any hint, by ffmpeg, what to compare : E.g.. Stand pictures, fast movie pictures ... to see, whether  missing information will be present. Regards Gloster

[FFmpeg-user] Fwd: Problems with old TV - Can I decode a new file and re-encode to an older version of a codec?

You must know, Samsun has *no certified DLNA devices.* A discussion with Samsung would be senseless, they have said : "They have an own DLNA Standard.". Regards Gloster Am 31.05.24 um 19:29 schrieb Paul B Mahol: On Fri, May 31, 2024 at 5:18 PM bbb wrote: On 5/31/24 17:10, Reindl Harald wro

[FFmpeg-user] Feature improvement request for 'geq' filter to support functions

Hi. When I use filter_complex syntax below, I get an error that cannot proceed. "-filter_complex "[1:v]geq=r='r(X,Y)':a='if(between(t,0,9),alpha(X,Y),0)'[alpha];" then " Unknown function in 't,0,9),alpha(X,Y),0)'" Seems geq filter not support generic function parsing. Please look into it. Have a

[FFmpeg-user] Question) Any way to change alpha for overlay while time goes by?

Hi. There are RGBA support qtrle video clips that have no problem with alpha support. I'd like to overlay a video on top of base one, and want to change the transparency while playing like "[1:v]alpha='if(between(t,0,10),(1-(t/10)) * alpha(X,Y),0)'[v0];[v0]overlay[out]" What kind of filter sequen