Re: [FFmpeg-user] Hardware acceleration

Hello, Can you provide the output of vainfo? On 18 April 2018 at 23:00, pilot constatinus wrote: > Hi, i was recently trying out vaapi acceleration in ffmpeg. It works well > with h264 hevc and vp8, but not with vp9. The output i get is: > > ffmpeg -vaapi_device

Re: [FFmpeg-user] AAC encoding seems to shorten the file slightly

Will Munn (2018-04-20): > ffprobe -i Bip\ late\ bip.wav-afconvert.m4a -hide_banner -show_format > ffprobe -i Bip\ late\ bip.wav.ffmpeg.m4a -hide_banner -show_format You should probably also look at the duration of the source file. Regards, -- Nicolas George signature.asc Description:

[FFmpeg-user] AAC encoding seems to shorten the file slightly

Hi, We have a script that creates AAC versions of WAV samples to be used in a musical context (looped stretched etc). Currently we are using apples encoder (afconvert) to do this on a Mac. We’d like to be able to move to ffmpeg so that we can run this without requiring OSX. I have written a

[FFmpeg-user] Video Playing in Back & forth using FFMPEG

Hello, can you please give me solution for how to play video back& forth looping.like forward+reverse,reverse+forwrad looping. how to solve this problem using FFMPEG. Thank you. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

[FFmpeg-user] Hardware acceleration

Hi, i was recently trying out vaapi acceleration in ffmpeg. It works well with h264 hevc and vp8, but not with vp9. The output i get is: ffmpeg -vaapi_device /dev/dri/renderD128v -i in.mkv -vf 'format=nv12,hwupload' -c:v vp9_vaapi -b:v 5M out.webm [ vp9_vaapi ] Encoding profile not found (19).

Re: [FFmpeg-user] Problem with ffmpeg and an onvif camera (Up!)

The row command ./ffmpeg -rtsp_transport tcp -loglevel 99 -i rtsp:// admin:admin@172.30.153.33:554/1 a.avi And here the output http://www.denisgottardello.it/ffmpeg2.log A little part of the output Guessed Channel Layout for Input Stream #0.1 : mono Input #0, rtsp, from

Re: [FFmpeg-user] What ffmpeg filter can I use to adjust colour temperature?

On 4/20/18, Dmitri wrote: > I am using ffmpeg with a camera and need to adjust colour temperature to > the lighting, adjust to warm/cold/bright white. > > I've found an algorithm that calculates temperature in Kelvin to RGB values >

Re: [FFmpeg-user] ProRes XQ 12-bit support

On 4/20/18, Elliott Balsley wrote: >> >> Or more likely a marketing issue. > > I think maybe what is happening is that since Resolve processes images in a > 32-bit space, and it's not convenient to fit 12-bit words, it pads each word > to 16-bits so then it fits better.

[FFmpeg-user] What ffmpeg filter can I use to adjust colour temperature?

I am using ffmpeg with a camera and need to adjust colour temperature to the lighting, adjust to warm/cold/bright white. I've found an algorithm that calculates temperature in Kelvin to RGB values (http://www.zombieprototypes.com/?p=210) and tried to use colorbalance filter by converting result