Re: [FFmpeg-user] Slit-Scan Technique

On Tue, 24 Nov 2015 12:30:45 -0800 Elliott Balsley wrote: > Does anybody know how to achieve a slit-scan effect with ffmpeg?  It > can be done in After Effects with the time displacement filter.  The > way it works, is you take one source video, and one displacement map

[FFmpeg-user] Slit-Scan Technique

Does anybody know how to achieve a slit-scan effect with ffmpeg?  It can be done in After Effects with the time displacement filter.  The way it works, is you take one source video, and one displacement map (typically a black-white linear gradient).  Each pixel of the source video is offset by

[FFmpeg-user] trouble with ffmpeg build script execution

hello community. Dear sir/madam, A very thanks and appreciation for such great thing you have developed. I am trying to build ffmpeg from last few days but unfortunately am unable to do. i am following this tutorial

[FFmpeg-user] Could NOT find FFMpeg

Hi , I checkout the project source code from github. linphone-desktop project source code. I getting this error while I am building the project in visual studio 2013. I installed ffmpeg,and I added in path also. CMake Error at C:/Program Files

Re: [FFmpeg-user] Could NOT find FFMpeg

On Tue, 24 Nov 2015 12:00:05 +0530 "Santhosh Naini" wrote: > Hi , > > I checkout the project source code from github. linphone-desktop project > source code. > I getting this error while I am building the project in visual studio 2013. > I installed ffmpeg,and I added

Re: [FFmpeg-user] Could NOT find FFMpeg

On 24 Nov 2015, at 07:30, Santhosh Naini wrote: > Hi , > > I checkout the project source code from github. linphone-desktop project > source code. > I getting this error while I am building the project in visual studio 2013. > I installed ffmpeg,and I added in path

Re: [FFmpeg-user] Combining .webm side by side - frame size changes

Sorry, please allow me to clarify: The command I ran was: ./ffmpeg -i x.webm -i y.webm -filter_complex "[0:v]scale=640:480[left];[1:v]scale=640:480[right];[left][right]hstack[out]" -map [out] -map 0:a -map 1:a c.webm I was hoping to combine the audio from both the source files into the

Re: [FFmpeg-user] trouble with ffmpeg build script execution

On Tue, 24 Nov 2015 11:57:53 +0530 sidharth wrote: > hello community. > Dear sir/madam, > A very thanks and appreciation for such great thing you have > developed. I am trying to build ffmpeg from last few days but > unfortunately am unable to do. i

Re: [FFmpeg-user] Combining .webm side by side - frame size changes

On 11/24/15, Moritz Barsnick wrote: > Hi Mike, > > On Mon, Nov 23, 2015 at 22:56:08 -0600, Mike Grommet wrote: > >> During the playback of the combined file, The right side video appears >> to zoom in to the top left of itself two times. The originals appear >> fine when played

Re: [FFmpeg-user] Combining .webm side by side - frame size changes

Hi Moritz, thanks for the response. I will certainly check out the vstack method and report back. Due to our specific use case, it may not be an option for us (we need the combined video in a horizontal format). I'll also attempt a scale filter as well. When I converted from the original

Re: [FFmpeg-user] Combining .webm side by side - frame size changes

On Tue, Nov 24, 2015 at 15:20:03 +0100, Paul B Mahol wrote: > > Something like > > $ ./ffmpeg -i a.webm -i b.webm -filter_complex "[0:v]scale=640:480[left]; > > [1:v]scale=640:480[right]; [left][right]vstack[out] -map [out] -map 0:a -map > > 1:a c.webm > > hstack is for side by side. vstack is

Re: [FFmpeg-user] Combining .webm side by side - frame size changes

Thank you both for your assistance. Hm, so far, initial tests using hstack do combine the videos - but I'm losing the audio for one of the streams in the final video. On 11/24/2015 9:15 AM, Moritz Barsnick wrote: On Tue, Nov 24, 2015 at 15:20:03 +0100, Paul B Mahol wrote: Something like $

Re: [FFmpeg-user] When will ffmpeg use VP9 v1.5?

The new version is up* and I did a quick benchmark: ffmpeg-git-20151120-64bit-static$ ./ffmpeg -i a.mp4 -c:v libvpx-vp9 -b:v 1M -cpu-used 4 -threads 4 -c:a libvorbis b.webm fps= 13 ffmpeg-git-20151124-64bit-static$ ./ffmpeg -i a.mp4 -c:v libvpx-vp9 -b:v 1M -cpu-used 4 -threads 4 -c:a

Re: [FFmpeg-user] When will ffmpeg use VP9 v1.5?

Am 24.11.2015 um 13:02 schrieb D: The new version is up* and I did a quick benchmark: ffmpeg-git-20151120-64bit-static$ ./ffmpeg -i a.mp4 -c:v libvpx-vp9 -b:v 1M -cpu-used 4 -threads 4 -c:a libvorbis b.webm fps= 13 ffmpeg-git-20151124-64bit-static$ ./ffmpeg -i a.mp4 -c:v libvpx-vp9 -b:v 1M

Re: [FFmpeg-user] When will ffmpeg use VP9 v1.5?

I played setting the values higher but it was neither faster nor slower. Average 4 cores utilization is still ~80%. Conclusion -- all in ffmpeg-git-20151124-64bit-static: Almost 100% on all 4 cores if I use -- no problem there: $ ./ffmpeg -i a.mp4 -c:v libx264 -crf 23 -c:a libvorbis b.mp4 Only

Re: [FFmpeg-user] When will ffmpeg use VP9 v1.5?

Hi D, On Tue, Nov 24, 2015 at 14:31:58 +0100, D wrote: > I played setting the values higher but it was neither faster nor slower. > Average 4 cores utilization is still ~80%. BTW, how do you define "utilization"? I believe in "top", 100% equals one core's usage, so you should be able to achieve

Re: [FFmpeg-user] Combining .webm side by side - frame size changes

Dana 24. 11. 2015. 16:25 osoba "Mike Grommet" napisala je: > > Thank you both for your assistance. > > Hm, so far, initial tests using hstack do combine the videos - but I'm losing the audio for one of the streams in the final video. > > For audio use amerge or amix. >

Re: [FFmpeg-user] Combining .webm side by side - frame size changes

On Tue, Nov 24, 2015 at 09:26:01 -0600, Mike Grommet wrote: > Hm, so far, initial tests using hstack do combine the videos - but I'm > losing the audio for one of the streams in the final video. What were you doing and what were you expecting? In other words, command line and complete, uncut