Re: [FFmpeg-user] Apparently the ffmpeg software scaler "sucks"

2016-05-17 Thread Peter Rabbitson
On 05/18/2016 06:45 AM, Reuben Martin wrote: curl -s http://www.4p8.com/eric.brasseur/gamma-1.0-or-2.2.png | \ ffmpeg -f image2pipe -i - \ -vf 'eq=gamma=0.454545,scale=w=iw/2:h=ih/2,eq=gamma=2.2' \ -vframes 1 -c:v bmp -f image2pipe - | ffplay -i - This is also suggested in the article from

Re: [FFmpeg-user] Apparently the ffmpeg software scaler "sucks"

2016-05-17 Thread Reuben Martin
On Wednesday, May 18, 2016 6:17:04 AM CDT Peter Rabbitson wrote: > According to a test image taken from > http://www.4p8.com/eric.brasseur/gamma.html ffmpeg's scaler does not > properly deal with... well scaling. > > The following pipeline produces a "SUCKS" verdict on ffmpeg 2.8.6: > >curl

[FFmpeg-user] Apparently the ffmpeg software scaler "sucks"

2016-05-17 Thread Peter Rabbitson
According to a test image taken from http://www.4p8.com/eric.brasseur/gamma.html ffmpeg's scaler does not properly deal with... well scaling. The following pipeline produces a "SUCKS" verdict on ffmpeg 2.8.6: curl -s http://www.4p8.com/eric.brasseur/gamma-1.0-or-2.2.png \ | ffmpeg -f

Re: [FFmpeg-user] fun with windows cmd and ffmpeg wildcards

2016-05-17 Thread Κωνσταντίνος Γεωργοκίτσος
Exactly. I also understand now, why the date stamped jpgs didn't work. they were not a sequence. Still sad I can't simple %*.jpg on windows, though. K 2016-05-17 13:58 GMT+03:00 Michael Koch : > > Great, I thought, and since I will need a days worth of pictures (1

Re: [FFmpeg-user] fun with windows cmd and ffmpeg wildcards

2016-05-17 Thread Michael Koch
Great, I thought, and since I will need a days worth of pictures (1 every minute gives 1440 pictures) I'll rename them 0601.jpg to 1200.jpg and try ffmpeg.exe -r 30 -i C:\Users\kostas\Documents\cams\timelapse\test2\%04d.jpg timelapse9.mp4 You forgot to specify -start_number 601 Michael

Re: [FFmpeg-user] fun with windows cmd and ffmpeg wildcards

2016-05-17 Thread Κωνσταντίνος Γεωργοκίτσος
Thanks so much! Relieved me of a morning full of headaches! Works now with sequences. zeranoe's builds seem not to have glob support. K 2016-05-17 13:13 GMT+03:00 Carl Eugen Hoyos : > Κωνσταντίνος Γεωργοκίτσος gmail.com> writes: > > > I'll rename them 0601.jpg to 1200.jpg > >

[FFmpeg-user] fun with windows cmd and ffmpeg wildcards

2016-05-17 Thread Κωνσταντίνος Γεωργοκίτσος
Dear all, On Windows 10 command line cmd.exe with a recent ffmpeg build (ffmpeg-20160308-git-5061579-win32-static). I am trying to do a time-lapse video from captured jpg pictures of a camera. For my test I had a script saving 600 pictures (10minutes, 1/sec). When I saved them using a sortable

Re: [FFmpeg-user] Decklink with ffmpeg audio desync

2016-05-17 Thread Dpto. Datos Television Costa Blanca
El 16/05/2016 a las 22:15, Marton Balint escribió: The problem may well be that when the decklink card loses input, it provides video frames only but no audio. I am afraid you have to dig into the code, to figure out what is really going on. You can try to modify it so it only adds a video