Difference between revisions of "HandBrake"
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HandBrakeCLI --input /dev/dvd --main-feature --audio-lang-list eng '''--aencoder faac,copy:ac3''' --output "Quantum Of Solace (2008).mp4" | HandBrakeCLI --input /dev/dvd --main-feature --audio-lang-list eng '''--aencoder faac,copy:ac3''' --output "Quantum Of Solace (2008).mp4" | ||
+ | |||
+ | == Single Audio Track Matching Language == | ||
+ | |||
+ | --audio-lang-list eng --first-audio | ||
+ | |||
+ | For this, you cannot use a preset (at least, I couldn't get this to work when using a preset!) ... | ||
+ | |||
+ | '''Docker or Tdarr''' | ||
+ | |||
+ | '''720p''' | ||
+ | |||
+ | docker run --rm -v "/home/paully/:/storage:ro" -v "/home/paully/ToDo/HandBrake/config:/config:rw" -v "/home/paully/ToDo/HandBrake/watch:/watch:rw" -v "/home/paully/ToDo/HandBrake/output:/output:rw" jlesage/handbrake /usr/bin/HandBrakeCLI --input "/storage/data/media/movies/Movie Name (Year)/Movie Name (Year).mkv" --stop-at duration:60 --maxWidth 1280 --maxHeight 720 --quality 20 --encoder x264 --encoder-preset slow --encopts="vbv-bufsize=4000:vbv-maxrate=2000" --non-anamorphic --audio-lang-list eng --first-audio --aencoder ac3 --ab 384 --no-markers --subtitle none --output "/output/output.mp4" | ||
+ | |||
+ | '''1080p''' | ||
+ | |||
+ | docker run --rm -v "/home/paully/:/storage:ro" -v "/home/paully/ToDo/HandBrake/config:/config:rw" -v "/home/paully/ToDo/HandBrake/watch:/watch:rw" -v "/home/paully/ToDo/HandBrake/output:/output:rw" jlesage/handbrake /usr/bin/HandBrakeCLI --input "/storage/data/media/movies/Movie Name (Year)/Movie Name (Year).mkv" --stop-at duration:60 --maxWidth 1920 --maxHeight 1080 --quality 20 --encoder x265 --encoder-preset slow --encopts="vbv-bufsize=4000:vbv-maxrate=2000" --non-anamorphic --audio-lang-list eng --first-audio --aencoder copy --audio-copy-mask=aac,ac3,eac3,truehd,dts --no-markers --subtitle none --output /output/output.mkv | ||
== Command Line Interface CLI == | == Command Line Interface CLI == | ||
Line 395: | Line 411: | ||
docker run --rm -v "/home/user/:/storage:ro" -v "/home/user/ToDo/HandBrake/config:/config:rw" -v "/home/user/ToDo/HandBrake/watch:/watch:rw" -v "/home/user/ToDo/HandBrake/output:/output:rw" jlesage/handbrake /usr/bin/HandBrakeCLI --input "/storage/data/torrents/completed/movie.mkv" --stop-at duration:60 --preset "Super HQ 2160p60 4K HEVC Surround" --format "av_mkv" --encoder "x265_10bit" --encoder-preset "slow" --encoder-profile "main10" --encoder-level "5.1" --cfr --rate "24" --quality "24" --non-anamorphic --audio 1 --aencoder "copy:eac3" --subtitle "none" --no-markers --output "/output/movie_4k_test_cli.mkv" | docker run --rm -v "/home/user/:/storage:ro" -v "/home/user/ToDo/HandBrake/config:/config:rw" -v "/home/user/ToDo/HandBrake/watch:/watch:rw" -v "/home/user/ToDo/HandBrake/output:/output:rw" jlesage/handbrake /usr/bin/HandBrakeCLI --input "/storage/data/torrents/completed/movie.mkv" --stop-at duration:60 --preset "Super HQ 2160p60 4K HEVC Surround" --format "av_mkv" --encoder "x265_10bit" --encoder-preset "slow" --encoder-profile "main10" --encoder-level "5.1" --cfr --rate "24" --quality "24" --non-anamorphic --audio 1 --aencoder "copy:eac3" --subtitle "none" --no-markers --output "/output/movie_4k_test_cli.mkv" | ||
+ | |||
+ | === HDR to SDR === | ||
+ | |||
+ | primaries=bt709:transfer=bt709:matrix=bt709:tonemap=reinhard:desat=2 | ||
== Fix Missing Fribidi Libraries == | == Fix Missing Fribidi Libraries == |
Latest revision as of 14:13, 13 November 2024
Adding Chapter Names Markers
Create a text CSV file with the lines as below...
1,Darts 2,Question Time 3,Gerald The Gorilla 4,Game For A Laugh 5,Are You A Gay Christian 6,Baronet Oswald Ernald Mosley 7,Origami 8,The Devil - Is He All Bad 9,Kinda Lingers 10,The Two Ninnies 11,Cut Off Their Goolies 12,Supa Dupa
Run the command line to include the markers option as below...
HandBrakeCLI --input input.mkv --markers="input.csv" --preset 'Fast 480p30' --non-anamorphic --encoder-preset slow --quality 22 --deinterlace --lapsharp --chapters 1-2 --output 'output.mp4'
This will give you a mediainfo output like the following...
Menu ID : 4 Codec ID : text Duration : 1 h 38 min Language : English Encoded date : UTC 2021-01-04 01:59:04 Tagged date : UTC 2021-01-04 01:59:04 Menu For : 1,2,3 00:00:00.000 : Darts 00:04:38.240 : Question Time 00:16:43.520 : Gerald The Gorilla 00:25:33.760 : Game For A Laugh 00:32:50.400 : Are You A Gay Christian 00:35:06.240 : Baronet Oswald Ernald Mosley 00:52:01.440 : Origami 01:00:50.880 : The Devil - Is He All Bad 01:10:40.320 : Kinda Lingers 01:15:09.440 : The Two Ninnies 01:23:06.080 : Cut Off Their Goolies 01:35:19.200 : Supa Dupa
Then you will able to jump to a particular chapter with a better idea of what is chosen.
This is particularly good for music videos, with the chapter names as the song titles :-)
Movie Qualities
- 576p x264 aac (2 channels 160 kbps)
- 720p x264 ac3 (6 channels 384 kbps)
- 1080p x265 dts (6 channels 1500 kbps)
Picture Quality
https://handbrake.fr/docs/en/latest/workflow/adjust-quality.html
Capture Log
To capture HandBrake’s log messages to a file, simply redirect stderr:
HandBrakeCLI ... 2> hb-log.txt
HEVC H.265 X265
https://www.techspot.com/article/1131-hevc-h256-enconding-playback/page7.html
Single AC3 audio 1080p...
"/usr/local/bin/HandBrakeCLI" --input "input.mkv" --main-feature --crop 0:0:0:0 --encoder x265 --encoder-preset medium --quality 22 --audio-lang-list eng --first-audio --aencoder ac3 --ab 384 --mixdown 5point1 --output "output hb x265 1080p ac3.mp4"
Dual audio 720p...
/usr/bin/HandBrakeCLI --input "input.mkv" --main-feature --chapters 1 --maxWidth 1280 --maxHeight 720 --crop 0:0:0:0 --markers --encoder x265 --encoder-preset medium --audio 1,1 --aencoder faac,ac3 --ab 160,384 --output "output.mp4"
Single AAC audio 720p...
/usr/bin/HandBrakeCLI --input "input.mkv" --main-feature --chapters 1 --maxWidth 1280 --maxHeight 720 --crop 0:0:0:0 --markers --encoder x265 --encoder-preset medium --audio 1 --aencoder av_aac --ab 384 --output "output.mp4"
Possible --encopts ...
pmode:rd=4:tu-intra-depth=3:rdoq-level=2:early-skip:b-intra:limit-modes:aq-mode=2:aq-strength=1.0:qg-size=16:ipratio=1.38:pbratio=1.28:me=3:max-merge=3:weightb:bframes=6:rc-lookahead=50:ref=6:psy-rdoq=1.38:no-sao
X264 X265 TIMINGS AND SIZES | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
ENCODER | CPU | ASM * | NVENC ** | SOURCE | DISC | PRESET | RESOLUTION | QUALITY | AUDIO | SIZE | TIME |
x265 | 25% | no | no | 21Gb | BD | medium | 1080p | 22 | ac3 | 1.9Gb | 86 hours |
x264 | 25% | no | no | 21Gb | BD | veryslow | 720p | 22 | ac3 | 1.4Gb | 18 hours |
x264 | 50% | no | no | 21Gb | BD | veryslow | 720p | 22 | ac3 | 1.4Gb | 6 hours |
x264 | 50% | no | no | 6Gb | DVD | veryslow | 576p | 22 | ac3 | 1.0Gb | 4 hours |
x265 | 50% | no | no | 21Gb | BD | medium | 1080p | 22 | ac3 | 1.9Gb | 43 hours |
x265 | 50% | no | no | 22Gb | BD | medium | 1080p | 22 | dts | 2.2Gb | 43 hours |
x265 | 75% | yes | no | 26Gb | BD | medium | 1080p | 22 | dts | 4.1Gb | 14 hours |
h265 | 75% | yes | yes | 26Gb | BD | medium | 1080p | 22 | dts | 19Gb | 1 hour |
* ASM is the technology which uses the CPU's built-in features and flags such as MMX, etc. I realised that I was not using them!
** NVENC - NVidiaENCoding using a GTX1050 graphics video card... TO COME ;-)
HOW TO FIX CPU CAPABILITIES NONE
x265 [info]: using cpu capabilities: none!
UPDATE - 20181006 - After recompiling nasm 2.13.03 by hand, and recompiling x265 it now shows the correct CPU flags which it detects...
x265 --version x265 [info]: HEVC encoder version 2.9 x265 [info]: build info [Linux][GCC 5.4.0][64 bit] 8bit x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX XOP FMA4 FMA3 BMI1
HOW TO NVENC
Blacklist the built-in Ubuntu Nouveau driver...
sudo rmmod nouveau sudo echo "blacklist nouveau" >>/etc/modprobe.d/blacklist.conf
Download and install the latest official stable Nvidia drivers for Linux...
Latest Long Lived Branch version: 390.87
sudo -i wget http://us.download.nvidia.com/XFree86/Linux-x86_64/390.87/NVIDIA-Linux-x86_64-390.87.run sh ./NVIDIA-Linux-x86_64-390.87.run exit
Change the encoder option for HandBrake...
/usr/local/bin/HandBrakeCLI --input input.mkv --main-feature --no-markers --crop 0:0:0:0 --encoder nvenc_h265 --encoder-preset medium --quality 22 --audio 2 --aencoder copy:dts --subtitle none --output output.mp4
Subtitles
To add all the English subtitles...
HandBrakeCLI --input /dev/dvd --main-feature --audio-lang-list eng --aencoder faac,ac3 --ab 160,384 --subtitle-lang-list eng --all-subtitles --output "movie.mp4"
To add just the forced subtitles for the foreign speaking parts of a movie...
HandBrakeCLI --input /dev/dvd --main-feature --audio-lang-list eng --aencoder faac,ac3 --ab 160,384 --subtitle scan --subtitle-forced --native-language eng --output "movie.mp4"
Multiple Audio Tracks
If you transcode your movie with multiple audio tracks, then it will solve the problem of missing audio... because the old TV you are using with automatically use AAC Stereo 2 Channels, rather than AC-3 Surround 6 Channels. This works very well with Plex.
Below is an example which reads the DVD, selects the movie, makes sure we have the English audio track, create multiple audio tracks in AAC Stereo 2 Channels + copy the AC-3 (lossless) and output the file name with the correct naming format for Plex...
HandBrakeCLI --input /dev/dvd --main-feature --audio-lang-list eng --aencoder faac,copy:ac3 --output "Quantum Of Solace (2008).mp4"
Single Audio Track Matching Language
--audio-lang-list eng --first-audio
For this, you cannot use a preset (at least, I couldn't get this to work when using a preset!) ...
Docker or Tdarr
720p
docker run --rm -v "/home/paully/:/storage:ro" -v "/home/paully/ToDo/HandBrake/config:/config:rw" -v "/home/paully/ToDo/HandBrake/watch:/watch:rw" -v "/home/paully/ToDo/HandBrake/output:/output:rw" jlesage/handbrake /usr/bin/HandBrakeCLI --input "/storage/data/media/movies/Movie Name (Year)/Movie Name (Year).mkv" --stop-at duration:60 --maxWidth 1280 --maxHeight 720 --quality 20 --encoder x264 --encoder-preset slow --encopts="vbv-bufsize=4000:vbv-maxrate=2000" --non-anamorphic --audio-lang-list eng --first-audio --aencoder ac3 --ab 384 --no-markers --subtitle none --output "/output/output.mp4"
1080p
docker run --rm -v "/home/paully/:/storage:ro" -v "/home/paully/ToDo/HandBrake/config:/config:rw" -v "/home/paully/ToDo/HandBrake/watch:/watch:rw" -v "/home/paully/ToDo/HandBrake/output:/output:rw" jlesage/handbrake /usr/bin/HandBrakeCLI --input "/storage/data/media/movies/Movie Name (Year)/Movie Name (Year).mkv" --stop-at duration:60 --maxWidth 1920 --maxHeight 1080 --quality 20 --encoder x265 --encoder-preset slow --encopts="vbv-bufsize=4000:vbv-maxrate=2000" --non-anamorphic --audio-lang-list eng --first-audio --aencoder copy --audio-copy-mask=aac,ac3,eac3,truehd,dts --no-markers --subtitle none --output /output/output.mkv
Command Line Interface CLI
https://handbrake.fr/docs/en/1.3.0/cli/command-line-reference.html
https://forum.handbrake.fr/viewforum.php?f=10
Set Maximum Bitrate
Set max bitrate to 1.5Mbps ...
--encopts="vbv-bufsize=3000:vbv-maxrate=1500"
Script to Cycle Through Folder
This will cyle through the MKV files in a folder and output MP4 files.
#!/bin/bash SRC="/path/to/input folder" DEST="/path/to/output folder" DEST_EXT=mp4 HANDBRAKE_CLI="/usr/local/bin/HandBrakeCLI" HANDBRAKE_OPTIONS="--width 720 --height 576 --non-anamorphic --crop 0:0:0:0 --encoder x264 --encoder-preset veryslow --deinterlace --no-markers" for FILE in "$SRC"/*.mkv do filename=$(basename "${FILE}") extension=${filename##*.} filename=${filename%.*} echo "${HANDBRAKE_CLI} --input \""${FILE}"\" "${HANDBRAKE_OPTIONS}" --output \""${DEST}"/"${filename}".${DEST_EXT}\"" #{HANDBRAKE_CLI} --input "${FILE}" ${HANDBRAKE_OPTIONS} --output "${DEST}"/"${filename}".${DEST_EXT} done exit
Latest Goalpost Moving X264 Command Line Settings
February 2017
/usr/bin/HandBrakeCLI --input "input.mkv" --maxWidth 1280 --maxHeight 720 --crop 0:0:0:0 --markers --encoder x264 --encoder-preset veryslow --encoder-tune film --encoder-profile high --encoder-level 3.1 --audio 1,1 --aencoder faac,ac3 --ab 160,384 --output "output.mp4"
https://handbrake.fr/docs/en/1.0.0/cli/cli-guide.html
Logging
HandBrakeCLI commands and options 2>/tmp/hb.log
https://trac.handbrake.fr/wiki/ActivityLogCLI
ffmpeg avconv CheatSheet
http://www.rodrigopolo.com/ffmpeg/cheats.php
DVD Deinterlacing
Some of the older DVDs have the Interlacing scan type.
Scan type : Interlaced
When you use HandBrake to convert them in to smaller files, they will need to be run through the 'deinterlace' filter first otherwise you will get horrible combing effects.
HandBrakeCLI --input "file.mkv" --width 720 --height 576 --non-anamorphic --crop 0:0:0:0 --encoder x264 --encoder-preset placebo --deinterlace --no-markers --output "file.mp4"
DVD Transcode
Converting an ISO file to a standard definition 720x576 Matroska video file, keeping the 1024x576 display aspect, chapters and subtitles.
time HandBrakeCLI --input ~/Videos/Film.iso --encoder x264 --quality 18 --title 1 --audio 1 --aencoder copy --subtitle 1 --crop 0:0:0:0 --markers --custom-anamorphic --keep-display-aspect --output ~/Videos/Film.mkv
Blu-Ray Transcode
Find the correct (probably AC-3) audio track...
HandBrakeCLI --input "Movie.mkv" --title 0
Converting a Full HD Matroska video file to an Normal HD 1280x720 MP4 video file, x264 slow speed, no subtitles, with dual audio tracks from the first (and possibly only) audio track, tuned for an normal live action movie. This will take about 8 hours to encode...
HandBrakeCLI --input "movie.mkv" --main-feature --maxWidth 1280 --maxHeight 720 --crop 0:0:0:0 --markers --x264-preset slow --x264-tune film --audio 1,1 --aencoder faac,ac3 --ab 160,384 --subtitle none --output "movie.mp4"
Converting a Full HD Matroska video file to an Normal HD 1280x720 MP4 video file, x264 medium speed, no subtitles, with dual audio tracks, tuned for an animated movie. This will take about 6 hours to encode...
HandBrakeCLI --input "movie.mkv" --main-feature --maxWidth 1280 --maxHeight 720 --crop 0:0:0:0 --markers --x264-preset medium --x264-tune animation --audio 2,2 --aencoder faac,ac3 --ab 160,384 --subtitle none --output "movie.mp4"
The slower you can go, the better.
--x264-preset slowest
...will probably take about 12 hours to encode... but be stunning.
If you went one stage further and did 2-pass, then it would probably take about 24 hours to encode!
--two-pass --x264-preset slowest
October 2024
I'm coming back to HandBrake from ffpmeg in tandem with Tdarr.
This is my command line for a Full HD 1080p with just one E-AC3 Dolby Atmos audio passthrough (instead of the normal dual audio) ..
HandBrakeCLI --input "input.mkv" --preset "Super HQ 2160p60 4K HEVC Surround" --encoder x265 --non-anamorphic --audio 1 --aencoder copy:eac3 --no-markers --output "output.mkv"
4K UHD Transcode
https://handbrake.fr/docs/en/latest/technical/hdr.html
https://www.youtube.com/watch?v=v9QMdXQk7No
strong-intra-smoothing=0:rect=0:aq-mode=1:rd=4:psy-rd=0.75:psy-rdoq=4.0:rdoq-level=1:rskip=2
More info coming soon.
Matroska (--format "av_mkv") Passthru common metadata () Resolution Limit 2160p 4K Ultra HD () H.265 10-bit (--encoder "x265_10bit") Framerate same as source () Constant Framerate (--cfr) Preset Slow (--encoder-preset "slow") Tune None () Profile main10 (--encoder-profile "main10") Level 5.1 (--encoder-level "5.1") Constant Quality RF 24 (--crf "24") E-AC3 Passthrough (--aencoder "copy:eac3") Subtitles Remove All (--subtitle "none") No Chapter Markers (--no-markers)
https://www.reddit.com/r/handbrake/comments/1g7c4sl/gui_to_cli_options_check/
Docker
So, this is the command line I ran using the Docker container, which came out beautifully :-)
Bearing in mind that the Audio track was E-AC3 Dolby Atmos so that's why I have had to chose 'E-AC3 Passthrough' or 'copy:eac3'.
If your movie source has TrueHD then you would choose 'True HD Passthrough' in the GUI or 'copy:truehd' in the CLI.
TIP: to change the Audio settings in the GUI you double-click on the line and use the drop-down to choose the 'Passthrough' options... yeah, not clear :)
docker run --rm -v "/home/user/:/storage:ro" -v "/home/user/ToDo/HandBrake/config:/config:rw" -v "/home/user/ToDo/HandBrake/watch:/watch:rw" -v "/home/user/ToDo/HandBrake/output:/output:rw" jlesage/handbrake /usr/bin/HandBrakeCLI --input "/storage/data/torrents/completed/movie.mkv" --stop-at duration:60 --preset "Super HQ 2160p60 4K HEVC Surround" --format "av_mkv" --encoder "x265_10bit" --encoder-preset "slow" --encoder-profile "main10" --encoder-level "5.1" --cfr --rate "24" --quality "24" --non-anamorphic --audio 1 --aencoder "copy:eac3" --subtitle "none" --no-markers --output "/output/movie_4k_test_cli.mkv"
HDR to SDR
primaries=bt709:transfer=bt709:matrix=bt709:tonemap=reinhard:desat=2
Fix Missing Fribidi Libraries
HandBrake now requires the Fribidi Libraries, and so you need to install them in order to compile HandBrake.
Ubuntu
sudo apt-get install libfribidi-dev
Gentoo
emerge dev-libs/fribidi
Keeping Up To Date
sudo apt-get install snapd sudo snap install cmake --classic
ERROR: Could not detect Ninja v1.5 or newer
sudo -i pip3 install --upgrade ninja exit
YES
NOW USING SELF COMPILED X264, X265, FDK-AAC LIBARIES
https://handbrake.fr/docs/en/latest/developer/build-linux.html
sudo -i apt-get install autoconf automake build-essential cmake git libass-dev libbz2-dev libfontconfig1-dev libfreetype6-dev libfribidi-dev libharfbuzz-dev libjansson-dev liblzma-dev libmp3lame-dev libogg-dev libopus-dev libsamplerate-dev libspeex-dev libtheora-dev libtool libtool-bin libvorbis-dev libxml2-dev m4 make nasm patch pkg-config python tar yasm zlib1g-dev libturbojpeg0-dev libjpeg-turbo8 libjpeg-turbo8-dev libvpx5 libvpx-dev apt-get install python3 curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py python3 get-pip.py pip3 install --upgrade pip pip3 install --upgrade ninja ninja --version pip3 install --upgrade meson meson --version apt-get -y install libnuma1 libnuma-dev libvpx-dev numactl ldconfig exit cd ~/Downloads git clone https://github.com/HandBrake/HandBrake cd HandBrake/ git pull sudo ldconfig make clean ./configure --force --verbose --launch-jobs=$(nproc) --launch --disable-gtk --enable-x265 --enable-fdk-aac sudo make --directory=build install HandBrakeCLI --version HandBrakeCLI --help
To uninstall...
cd ~/Downloads/HandBrake sudo make --directory=build uninstall
NO
sudo add-apt-repository ppa:stebbins/handbrake-git-snapshots sudo apt-get update sudo apt-get install handbrake-cli
Thanks - https://handbrake.fr/docs/en/1.0.0/get-handbrake/download-and-install.html
OLD
The wonderful software HandBrake only gets official releases once a year. In computing terms, this is a lifetime and all those marvellous advances in video jiggerypokery will be lost.
So, we install the latest SVN version that the programmers are working on today!
**UPDATE** But first we need some development libraries from the Ubuntu repositories:-
sudo apt-get install --yes libass-dev libtheora-dev libvorbis-dev libsamplerate0-dev
Now, we can install HandBrake...
cd ~/Downloads rm -rf hb-trunk svn checkout svn://svn.handbrake.fr/HandBrake/trunk hb-trunk cd hb-trunk rm -rf build/ ./configure --force --launch --disable-gtk cd build/ sudo make install
That's it! This will install the 12Mb binary file into /usr/local/bin/HandBrakeCLI
To test you have it working...
HandBrakeCLI --update
...and you will see the SVN version number...
[22:51:04] hb_init: checking for updates [22:51:04] Using http://handbrake.fr/appcast_unstable.xml [22:51:04] latest: 0.9.8 i686, build 2012071700 [22:51:05] hb_init: starting libhb thread HandBrake svn5086 (2012112801) - Linux x86_64 - http://handbrake.fr Your version of HandBrake is up to date.
Enjoy!
Gentoo Linux Installation
su - root cd emerge -q dev-libs/fribidi svn checkout svn://svn.handbrake.fr/HandBrake/trunk hb-trunk cd hb-trunk WANT_AUTOMAKE="1.11" ./configure --launch --disable-gtk --force cd build/ sudo make install
Limit CPU Usage On HandBrake
Install the package cpulimit...
sudo apt-get install cpulimit
Now you can limit the cpu usage by specifying the exact program name and the total percentage amount of all cores. The example below limits the cpu to a total usage of 80% (which is 20% each x 4 cores) for the program called HandBrakeCLI...
sudo cpulimit -e HandBrakeCLI -l80
Note this will dramatically increase the time for transcoding - instead of taking 2 minutes it took 10 minutes... but at least it kept the cpu from overheating! :-)
paully@mythbuntu-server3:~$ cat /etc/init.d/cpulimit.sh #!/bin/bash /usr/bin/cpulimit -b -e HandBrakeCLI -l 80 &>/dev/null /usr/bin/cpulimit -b -e avconv -l 80 &>/dev/null /usr/bin/cpulimit -b -e mencoder -l 80 &>/dev/null /etc/rc2.d/S10cpulimit.sh -> /etc/init.d/cpulimit.sh*
Make Movies Louder
Use the new --gain option to increase the volume during transcoding...
HandBrakeCLI --help
--gain <float> Amplify or attenuate audio before encoding. Does NOT work with audio passthru (copy). Values are in dB. Negative values attenuate, positive values amplify. A 1 dB difference is barely audible.