Transcoder 1080p to 720p used GPU GTX 970 nvidia ??

WolfSteel

Hello everyone
I have this scenario
tbs6909x2 + tvheadend + oscam

I need to transcode
from 1080 to 720p with the nvidia gtx 970 video card
I can't create the stream profiles for 720p with aac audio
... if anyone can help me I would be very grateful
the channel itself comes as 1080p with ac3 and 60 fps
I need to do it using nvenc or hecv for 720p with aac and 30 fps
could someone help me...

ukn_unknown

Converting from 1080 to 720 probably is doable natively in TVH (in the configuration). Changing the frame rate from 60p to 30p I don't think natively is possible. You can use pipe with ffmpeg. I don't have a Nvidia GPU to test, but for your command you should start from

WolfSteel

ukn_unknown
I'm trying to compile tvh with enable nvenc using nvidia
I'm having problems

ERROR: libnpp not found

If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.
make[1]: *** [Makefile.ffmpeg:689: /home/osiris/tvheadend/build.linux/ffmpeg/ffmpeg-6.1.1/.tvh_build] Error 1
make[1]: Leaving directory '/home/osiris/tvheadend'
make: *** [Makefile:858: /home/osiris/tvheadend/build.linux/ffmpeg/build/ffmpeg/lib/libavcodec.a] Error 2
root@osiris:/home/osiris/tvheadend#

how should I create the stream profile
to test natively from 1080 to 720

ukn_unknown

What parameters were used when TVH was compiled? Maybe recompiling is nor required ...
For that navigate to the configuration page (as admin), and select tab 'About'.
Search for text:
Build: 4.3-2
at the end of the line click on Toggle details
A new text file will open that starts with "Configure arguments:"
Copy all that text into a text file and upload it for me to check.

WolfSteel

ukn_unknown "I'm having these errors during compilation. Is there a tutorial on how to do the compilation? I already activated --enable-nvenc, and I'm getting these errors mentioned above. The version I installed before wasn't for compilation. I formatted to Ubuntu 24 and am trying to compile. Help me."

ukn_unknown

I recommend you to check this thread: https://stackoverflow.com/questions/55813663/ffmpeg-compilation-failed-with-cuda-libnpp-not-found

WolfSteel

ukn_unknown not sucess in compile tvh

ukn_unknown

I don't know if there is a way to install only libnpp ... but one way to install it is to install: nvidia-cuda-toolkit
sudo apt install nvidia-cuda-toolkit

WolfSteel

ukn_unknown thanks very good
my problem convert ac3 in aac iam crazy

Configure arguments:
--build=x86_64-linux-gnu --prefix=/usr --includedir=${prefix}/include --mandir=${prefix}/share/man --infodir=${prefix}/share/info --sysconfdir=/etc --localstatedir=/var --disable-silent-rules --libexecdir=${prefix}/lib/tvheadend --disable-maintainer-mode --disable-dependency-tracking --enable-cuda-nvcc --enable-cuvid --enable-nvenc --enable-cuda-llvm --enable-libnpp --disable-ffmpeg_static --enable-libav --enable-vaapi --enable-bundle --arch=[x86_64] --arch=x86_64

Compiler:
Using C compiler: cc
Using LD flags: -ldvbcsa
Build for arch: x86_64

Binaries:
Using PYTHON: python
Using GZIP: gzip
Using BZIP2: bzip2

Options:
pie yes
ccdebug no
cardclient yes
cwc yes
cccam yes
capmt yes
constcw yes
linuxdvb yes
satip_server yes
satip_client yes
hdhomerun_client yes
hdhomerun_server yes
hdhomerun_static yes
iptv yes
tsfile yes
dvbscan yes
timeshift yes
trace yes
avahi yes
zlib yes
libav yes
ffmpeg_static no
libx264 yes
libx264_static yes
libx265 yes
libx265_static yes
libvpx yes
libvpx_static yes
libtheora yes
libtheora_static yes
libvorbis yes
libvorbis_static yes
libfdkaac no
libfdkaac_static yes
libopus yes
libopus_static yes
nvenc yes
vaapi yes
mmal no
omx no
inotify yes
epoll yes
pcre no
pcre2 yes
uriparser yes
ccache no
tvhcsa yes
bundle yes
pngquant no
kqueue no
dbus_1 yes
android no
gtimer_check no
slow_memoryinfo no
libsystemd_daemon no
pcloud_cache yes
ddci yes
cclang_threadsan no
gperftools no
execinfo yes
mmx yes
sse2 yes
W_unused_result yes
f_stack_protector yes
f_stack_protector_strong yes
f_stack_check yes
f_PIE yes
fdatasync yes
getloadavg yes
atomic32 yes
atomic64 yes
atomic_time_t yes
atomic_ptr yes
bitops64 yes
lockowner yes
qsort_r yes
time_ld yes
gmtoff yes
recvmmsg yes
sendmmsg yes
ifnames yes
py_gzip yes
bin_pkg_config yes
bin_xgettext yes
bin_msgmerge yes
bin_gzip yes
bin_bzip2 yes
ssl yes
linuxdvbapi yes
linuxdvb_ca yes
upnp yes
hwaccels yes
inotify_h yes
inotify_init1 yes
dvbcsa yes
epoll_create1 yes
mpegts yes
mpegts_dvb yes

Packages:
openssl 1.1.1f
zlib 1.2.11
libpcre2-8 10.34
liburiparser 0.9.3
avahi-client 0.7
libavfilter 10.9.100
libswresample 5.4.100
libswscale 8.13.100
libavformat 61.9.107
libavcodec 61.33.102
libavutil 59.56.100
libva 1.7.0
libva-drm 1.7.0
dbus-1 1.12.16

Installation paths:
Prefix: /usr
Binaries: ${prefix}/bin
Libraries: ${prefix}/lib
Data files: ${prefix}/share
Man pages: /usr/share/man

ukn_unknown

there is a codec profile already defined for aac (webtv-aac). In your stream profile (that have 'Video codec profile' with nvenc) for 'Audio codec profile' select 'webtv-aac'.
I have the following configuration:

configure-arguments.txt

6kB

was built with:
AUTOBUILD_CONFIGURE_EXTRA="--enable-nvenc" ./Autobuild.sh