Fixed: 14.04.5 Failed at make, result in /tmp/logbuildCore**

[eumagga0x2a]

Code Select Expand

vainfo
libva info: VA-API version 0.37.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so
libva info: Found init function __vaDriverInit_0_32
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.37 (libva 1.5.0)


Okay, I think I can deduct the only plausible answer: you have libva and libva-dev 1.5.0-1 from Ubuntu 15.04 (Vivid Vervet) installed on 14.04.5. It provides VA-API version 0.37 and supports HEVC but not yet VP9.

The main thing is that it is now clear that the detection of libva features on behalf of Avidemux works fine.

[Jan Gruuthuse]

Code Select Expand

grep -nR VAProfileHEVCMain /usr/include/va/

/usr/include/va/va.h:296:    VAProfileHEVCMain                   = 17,
/usr/include/va/va.h:297:    VAProfileHEVCMain10                 = 18

Code Select Expand

dpkg -S /usr/include/va/va.h

libva-dev:amd64: /usr/include/va/va.h

libva-dev
Video Acceleration (VA) API for Linux -- development files
Libraries - Development (universe)
1.5.0-1~xedgers~trusty
maintainer: pkg-multimedia-maintainers @ lists.alioth.debian.org

[eumagga0x2a]

libva-dev
Video Acceleration (VA) API for Linux -- development files
Libraries - Development (universe)
1.5.0-1~xedgers~trusty
maintainer: pkg-multimedia-maintainers @ lists.alioth.debian.org

Thank you for the confirmation. This is not an official Ubuntu Trusty package, it originates from the xorg-edgers PPA which backports (mostly just rebuilds on Ubuntu Trusty) more recent version from Debian.

Edit: This means that packages built on your 14.04.5 system but installed on a regular Ubuntu 14.04.5 (without working VDPAU decoding) would try to play HEVC content via libva and fail, instead of skipping straight to the software decoding via internal ffmpeg. I don't know if they fail gracefully, i.e. automatically falling back to the software decoding or hard, unable to decode HEVC unless hardware accel in Avidemux gets disabled.

[Jan Gruuthuse]

As it stands now, it looks like hevc is now processed by the the CPU and not by hardware accelerated GPU. It take now minutes to encode 3sat test clip on 14.04.5 versus seconds on 16.04.1 accelerated GPU for the same test clip.
3sat test clip 69 MB download @ dropbox

[Jan Gruuthuse]

False alarm: avidemux did reset all settings (preferences). From time to time you need to check this, installing a newer avidemux does this.

[Jan Gruuthuse]

14.04.5 x265 encoding seems slower:

Code Select Expand

x265 [info]: frame I:     14, Avg QP:20,27  kb/s: 18312,09
x265 [info]: frame P:    913, Avg QP:24,08  kb/s: 4086,61
x265 [info]: frame B:    965, Avg QP:29,11  kb/s: 279,65 
x265 [info]: Weighted P-Frames: Y:0,2% UV:0,1%
x265 [info]: Weighted B-Frames: Y:0,0% UV:0,0%
x265 [info]: consecutive B-frames: 53,1% 13,9% 8,8% 24,2%

encoded 1892 frames in 70,51s (26,83 fps), 2250,16 kb/s, Avg QP:26,62

more detailed info from terminal output attached:

[Jan Gruuthuse]

16.04.1 x265

Code Select Expand

x265 [info]: frame I:     14, Avg QP:20,25  kb/s: 18283,77
x265 [info]: frame P:    913, Avg QP:24,09  kb/s: 4078,13
x265 [info]: frame B:    965, Avg QP:29,10  kb/s: 277,56 
x265 [info]: Weighted P-Frames: Y:0,2% UV:0,1%
x265 [info]: Weighted B-Frames: Y:0,0% UV:0,0%
x265 [info]: consecutive B-frames: 53,1% 13,9% 8,8% 24,2%

encoded 1892 frames in 64,54s (29,32 fps), 2244,79 kb/s, Avg QP:26,62
more detailed info from terminal output attached:

[eumagga0x2a]

False alarm: avidemux did reset all settings (preferences).

This happend probably due to [UI] Add a preference to select between reload default encoder setting or keep using current (euma). The way how Avidemux currently reacts encounting a new setting is surely a bug, maybe it will be fixed at some time in the future.

Why are you testing HEVC encoding? The libva features which were initially misdetected are decoding only.

To check if building Avidemux on 14.04.5 with a less outdated and thus HEVC capable libva than available via official repositories poses a problem for users of a regular 14.04.5 installation, one should use a target PC with a pretty recent Intel CPU but without a dedicated graphics card, running Ubuntu 14.04.5 without any PPAs or foreign packages apart from Avidemux added and try to decode (to play or to re-encode) a HEVC video in Avidemux.