On Mon, May 14, 2018 at 15:48:18 +0200, [email protected] wrote: > I have a bananapi, running Armbian 5.38. I have done the following steps to > compile ffmpeg: > git clone https://github.com/chwe17/FFmpeg-Cedrus.git
I would like to claim: If you have issues with that fork of ffmpeg, why don't you ask there? (Honest question.) That said, that repo isn't even a proper fork, so it's hard to understand what they changed...but okay. It's apparently based on a quite old version of ffmpeg, so you'll have an extremely hard time getting support here. For all we know, any issues may have been fixed in a long time! (Cedrus:) > cedric@bananapi:~$ ffmpeg -i /dev/video0 -c:v cedrus264 -b:v 1000k -vewait > 1000 -f h264 test.h264 [...] (armbian:) > cedric@bananapi:~/new/FFmpeg-Cedrus$ ffmpeg -b:v 1000k -f h264 test.h264 -i > /dev/video0 [...] (Cedrus:) > cedric@bananapi:~/new/FFmpeg-Cedrus$ ./ffmpeg -v debug -c:v cedrus264 -b:v > 1000k -vewait 1000 -f h264 test.h264 -i /dev/video0 You order of inputs and outputs in the third command line confuses me. It might work (does it), but I expect $ ffmpeg [input options] -i input [output options] output Have you tried: $ ffmpeg -i /dev/video0 -f null - with the Cedrus version (skipping the special encoder)? This site: http://linux-sunxi.org/FFmpeg where the Cedrus patch comes from recommends this: $ ffmpeg -f v4l2 -video_size 640x480 -i /dev/video0 [...] Have you tried that? Furthermore: (armbian:) > Then I uninstall and reinstall ffmpeg from armbian, so I can test if my > webcam itself is to blame. I see this works correctly, but it does not have > the options -c:v cedrus264 and -vewait: > cedric@bananapi:~/new/FFmpeg-Cedrus$ ffmpeg -b:v 1000k -f h264 test.h264 -i > /dev/video0 > ffmpeg version 2.8.14-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg > developers This is extremely old. Can you get hold of a newer binary build for armbian? ffmpeg-4.0 or recent ffmpeg git, if possible. > Where can I get a version of ffmpeg that uses the h264 hardware encoder for > the Allwinner A20 SOC on the bananapi? Assuming that Cedrus code used to work - http://linux-sunxi.org/FFmpeg hints that is was experimental and is unmaintained - you could try to port their changes to recent ffmpeg. The feasibility of this would be easier to check if those guys&gals had made it clear which version of ffmpeg their code is based on[*]. Sigh. Cheers, Moritz [*] This could be some sort of indication: libavutil 54. 6.100 / 54. 6.100 libavcodec 56. 0.101 / 56. 0.101 libavformat 56. 2.100 / 56. 2.100 libavdevice 56. 0.100 / 56. 0.100 libavfilter 5. 0.102 / 5. 0.102 libswscale 3. 0.100 / 3. 0.100 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 0.100 / 53. 0.100 _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
