VICE - Video, audio and Image Converter for Erlang/Elixir

Version: 0.1.0

Authors: Gregoire Lejeune (gregoire.lejeune@gmail.com).

VICE

VICE is a fork and rewrite of erlffmpeg.

Install

cmake, ffmpeg|libav, libopencv-dev, imagemagick, SoX

Example


1> vice:start().
...
2> {async, Worker} = vice:convert("test/erlang.mp4", "erlang.webm").
...
3> vice:status(Worker).
{running, 9.131803868645973}
3> vice:status(Worker).
{running, 22.89698605488079}
...

Common options

Type	Name	Description	Value	Example
global	cgroup	Execute encoder in the given cgroup.	string() \| binary()	{cgroup, "cpu:/erlang.vice"}
global	cgexec	Path to the cgexec executable.	string() \| binary()	{cgexec, "/usr/bin/cgexec"}
global	type	Allow you to force the input type.	video \| audio \| image	{cgexec, "/usr/bin/cgexec"}

Video

For video conversion, VICE use FFmpeg.

Options

Type	Name	Description	Value	Example
global	preset	Use a given preset file.	string() \| atom()	{preset, hls1080p}
global	global_params	Global parameters.	[{atom(), term()}]	[{framerate, 25}, {bitrate, 3950}]
global	yes	Overwrite output files without asking.	true \| false	{yes, true}
global	fix_sub_duration	Fix subtitles durations. For each subtitle, wait for the next packet in the same stream and adjust the duration of the first to avoid overlap.	true \| false	{fix_sub_duration, true}
global	canvas_size	Set the size of the canvas used to render subtitles.	integer()	{canvas_size, 10}
global	filter_complex	Define a complex filtergraph, i.e. one with arbitrary number of inputs and/or outputs.	Filtergraph :: string() \| binary() \| proplist()	{filter_complex, [{"acrossfade", "d=10"}, {"c1", "exp"}, {"c2", "exp"}]}
global	filter_complex_script	This option is similar to filter_complex, the only difference is that its argument is the name of the file from which a complex filtergraph description is to be read.	Script :: file:filename_all()	{filter_complex_script, "filter.script"}
global	allowed_extensions	List of file extensions that dash or hls is allowed to access.	Extensions :: string() \| binary()	{allowed_extensions, "vtt,aac,ts,key"}
input	input_position	Seeks in this input file to position.	position :: string() \| binary()	{input_position, "00:01:02.123"}
input	input_eof_position	Like the input_position option but relative to the "end of file". That is negative values are earlier in the file, 0 is at EOF. .	position :: string() \| binary()	{input_eof_position, "-0:32:01.123"}
input	input_format	Force input format.	Format :: string()	{input_format, "mp4"}
input	input_duration	Limit the duration of data read from the input file.	position :: string() \| binary()	{input_duration, "0:32:01.123"}
input	decoder	Select a decoder for one or more streams.	[Stream :: string(), Codec :: string()]	{decoder, ["a", "pcm_s161e"]}
input	itoffset	Set the input time offset.	position :: string() \| binary()	{itoffset, "+12.345"}
input	input_frame_rate	Set frame rate (Hz value, fraction or abbreviation).	[Stream :: string(), FPS :: integer()] \| FPS :: integer()	{input_frame_rate, 25}
input	input_frame_size	Set frame size.	[Stream :: string(), Size :: integer()] \| Size :: integer()	{input_frame_size, ["v", 1]}
input	input_pixel_format	Set pixel format.	[Stream :: string(), Format :: string()] \| Format :: string() \| binary()	{input_pixel_format, "rgb24"}
input	input_sws_flags	Set SwScaler flags.	Flags :: string() \| binary()	{input_sws_flags, "gauss"}
input	input_audio_frequency	Set the audio sampling frequency.	[Stream :: string(), Freq :: integer()] \| Freq :: integer()	{input_audio_frequency, ["a:1", 22050]}
input	input_audio_channels	Set the number of audio channels.	[Stream :: string(), Channels :: integer()] \| Channels :: integer()	{input_audio_channels, 6}
input	input_acodec	Set the audio codec.	Codec :: string() \| binary()	{input_acodec, "pcm_s24le"}
input	guess_layout_max	If some input channel layout is not known, try to guess only if it corresponds to at most the specified number of channels.	Channels :: integer()	{guess_layout_max, 2}
input	input_vcodec	Set the video codec.	Codec :: string() \| binary()	{input_vcodec, "libxvid"}
input	input_scodec	Set the subtitle codec.	Codec :: string() \| binary()	{input_scodec, "srt"}
input	muxdelay	Set the maximum demux-decode delay.	Delay :: float() \| integer()	{muxdelay, 0.1}
input	muxpreload	Set the initial demux-decode delay.	Delay :: float() \| integer()	{muxpreload, 0.1}
input	accurate_seek	This option enables or disables accurate seeking in input files with the output_position option.	true \| false	{accurate_seek, false}
output	output_format	Force output format.	Format :: string()	{output_format, "mp4"}
output	output_duration	Limit the duration of data read from the output file.	position :: string() \| binary()	{output_duration, "0:32:01.123}
output	output_position	Seeks in this output file to position.	position :: string() \| binary()	{output_position, "00:01:02.123}
output	output_eof_position	Like the output_position option but relative to the "end of file". That is negative values are earlier in the file, 0 is at EOF. .	position :: string() \| binary()	{output_eof_position, "-0:32:01.123}
output	encoder	Select a encoder for one or more streams.	[Stream :: string(), Codec :: string()] \| Codec :: string()	{encoder, ["a", "pcm_s161e"]}
output	bitrate	Set bitrate.	[Stream :: string(), Bitrate :: string()] \| [Stream :: string(), Number :: integer(), Bitrate :: string()] \| Bitrate :: string() \| integer()	{bitrate, ["v", 0, "800k"]}
output	timestamp	Set the recording timestamp in the container.	Date :: date()
output	target	Specify target file type (vcd, svcd, dvd, dv, dv50). type may be prefixed with pal-, ntsc- or film- to use the corresponding standard.	Target :: string()	{target, "vcd"}
output	frames	Stop writing to the stream after framecount frames.	[Stream :: string(), Framecount :: integer()] \| Framecount :: integer()	{frames, ["v", 1]}
output	qscale	Use fixed quality scale (VBR).	[Stream :: string(), Quality :: integer()] \| [Stream :: string(), Number :: integer(), Quality :: integer()] \| Quality :: integer()
output	filter	Create the filtergraph specified by filtergraph and use it to filter the stream.	[Stream :: string(), Filtergraph :: string()]
output	filter_script
output	pre
output	vframes
output	output_frame_rate
output	output_frame_size
output	aspect
output	no_video_recording
output	vcodec
output	pass
output	vlang
output	video_filtergraph
output	output_pixel_format
output	output_sws_flags
output	rc_override
output	top
output	force_key_frames
output	copyinkf
output	aframes
output	output_audio_frequency
output	audio_quality
output	output_audio_channels
output	no_audio_recording
output	output_acodec
output	sample_fmt
output	audio_filtergraph
output	output_scodec
output	no_subtitle_recording
output	map
output	map_channel
output	map_chapters
output	vsync
output	async
output	copytb
output	shortest
output	dts_delta_threshold
output	streamid
output	bitstream_filters
output	timecode
output	strict
output	metadata
output	disable_video
output	disable_audio
output	disable_subtitle
output	x264_profile
output	x264_level
output	x264_refs
output	start_number
output	hls_list_size
output	hls_key_info_file
output	hls_key_info		[{key_uri, string()}, {enc_key, string() \| file:filename_all()}, {iv, string()}]
output	hls_playlist_type
output	hls_segment_filename
output	hls_time

Video Thumbnails

To generate video thumbnails, VICE use ImageMagick

^{[®](http://tarr.uspto.gov/servlet/tarr?regser=serial&entry=78333969)}

and FFmpeg. If you want to optimize output images, you must add image_optimizer in your project dependencies and install pngquand or OptiPNG.

Options

Type	Name	Description	Value	Example
global	every	Generate a thumbnail _every_ seconds.	integer()	{every, 6}
global	width	Thumbnail image width.	integer()	{width, 100}
global	out_path	Output path.	string() \| binary()	{out_path, "my_folder"}
global	assets_path	Assets path.	string() \| binary()	{assets_path, "http://mysite.com/video/1/thumbnails"}
global	sprite	Generate a single image.	true \| false	{sprite, true}

Audio

For audio conversion, VICE use SoX.

Options

Type	Name	Description	Value	Example
global	buffer or input_buffer	Set the size in bytes of the buffers used for processing audio (default 8192).	Bytes :: integer()	{buffer, 20000}
global	clobber	Don’t prompt before overwriting an existing file with the same name as that given for the output file.	true \| false	{clobber, false}
global	combine	Select the input file combining method.	concatenate \| merge \| mix \| 'mix−power' \| multiply \| sequence	{combine, concatenate}
global	no_dither	Disable automatic dither.	true \| false	{no_dither, true}
global	effects_file	Use File to obtain all effects and their arguments.	File :: file:filename_all()	{effects_file, "effects.data"}
global	guard	Automatically invoke the gain effect to guard against clipping.	true \| false	{guard, true}
global	magic	If SoX has been built with the optional libmagic library then this option can be given to enable its use in helping to detect audio file types.	true \| false	{magic, true}
global	multi_threaded	By default, SoX is single threaded. If the multi_threaded option is given however then SoX will process audio channels for most multi-channel effects in parallel on hyper-threading/multi-core architectures.	true \| false	{multi_threaded, true}
global	single_threaded	Opposite of the multi_threaded option.	true \| false	{single_threaded, true}
global	norm	Automatically invoke the gain effect to guard against clipping and to normalise the audio.	DBLevel :: integer() \| true	{norm, true}
global	play_rate_arg	Selects a quality option to be used when the rate effect is automatically invoked whilst playing audio.	Arg :: string()
global	plot	If not set to off (the default if plot is not given), run in a mode that can be used, in conjunction with the gnuplot program or the GNU Octave program, to assist with the selection and configuration of many of the transfer-function based effects.	gnuplot \| octave \| off	{plot, gnuplot}
global	repeatable	VICE will embed a fixed time-stamp in the output file (e.g. AIFF) and will seed pseudo random number generators (e.g. dither) with a fixed number, thus ensuring that successive SoX invocations with the same inputs and the same parameters yield the same output.	true \| false	{repeatable, true}
global	replay_gain	Select whether or not to apply replay-gain adjustment to input files.	track \| album \| off	{replay_gain, track}
global	temp	Specify that any temporary files should be created in the given Directory.	Directory :: string()	{temp, "/home/vice/tmp"}
input	ignore_length	Override an (incorrect) audio length given in an audio file’s header.	true \| false	{ignore_length, true}
input	volume	Intended for use when combining multiple input files, this option adjusts the volume of the file that follows it on the command line by a factor of Factor.	{volume, Factor :: float()}	{volume, 0.8}
input	input_bits	The number of bits (a.k.a. bit-depth or sometimes word-length) in each encoded sample.	Bytes :: integer()	{input_bits, 8}
input	input_channels	The number of audio channels in the audio file.	Channels :: integer()	{input_channels, 2}}
input	input_encoding	The audio encoding type.	Encoding :: string()	{input_encoding, "float"}
input	input_rate	Gives the sample rate in Hz of the file.	Rate :: integer()	{input_rate, 48720}
input	input_rate_k	Gives the sample rate in kHz of the file.	KRate :: integer()	{input_rate_k, 48}
input	input_type	Gives the type of the audio file.	Filetype :: string()	{input_type, "mp3"}
input	input_endian	Specify the byte-order of the audio data.	little \| bug \| swap	{input_endian, little}
input	input_reverse_nibbles	Specifies that the nibble ordering (i.e. the 2 halves of a byte) of the samples should be reversed.	true \| false	{input_reverse_nibbles, true}
input	input_reverse_bits	Specifies that the bit ordering of the samples should be reversed.	true \| false	{input_reverse_bits, true}
output	output_encoding	The audio encoding type.	Encoding :: string()	{output_encoding, "float"}
output	output_bits	The number of bits (a.k.a. bit-depth or sometimes word-length) in each encoded sample.	Bytes :: integer()	{output_bits, 8}
output	output_channels	The number of audio channels in the audio file.	Channels :: integer()	{output_channels, 2}}
output	output_rate	Gives the sample rate in Hz of the file.	Rate :: integer()	{output_rate, 48720}
output	output_rate_k	Gives the sample rate in kHz of the file.	KRate :: integer()	{output_rate_k, 48}
output	output_type	Gives the type of the audio file.	Filetype :: string()	{output_type, "mp3"}
output	output_endian	Specify the byte-order of the audio data.	little \| bug \| swap	{output_endian, little}
output	output_reverse_nibbles	Specifies that the nibble ordering (i.e. the 2 halves of a byte) of the samples should be reversed.	true \| false	{output_reverse_nibbles, true}
output	output_reverse_bits	Specifies that the bit ordering of the samples should be reversed.	true \| false	{output_reverse_bits, true}
output	add_comment	Append a comment in the output file header (where applicable).	Text :: string()	{add_comment, "Encoded by VICE"}
output	comment	Specify the comment text to store in the output file header (where applicable).	Text :: string()	{comment, "Encoded by VICE"}
output	comment_file	Specify a file containing the comment text to store in the output file header (where applicable).	File :: file:filename_all()	{comment_file, "/home/vice/comment.txt"}
output	compression	The compression factor for variably compressing output file formats.	Factor :: integer()	{compression, 2}
effects	effects	Audio effects to invoke (see Effects).	Effects :: string()	{effects, "chorus 0.7 0.9 55 0.4 0.25 2"}

Image

For image conversion, VICE use ImageMagick

^{[®](http://tarr.uspto.gov/servlet/tarr?regser=serial&entry=78333969)}

Options

Type	Name	Description	Value	Example
convert	resize	Resize image	{resize, P :: integer(), percent \| pixel} \| {resize, W :: integer(), H :: integer()} \| {resize, W :: integer(), H :: integer(), percent \| ignore_ration \| no_enlarge \| no_shrink \| fill}	{resize, 50, percent}
convert	thumbnail	Create a thumbnail of the image. This is similar to resize, except it is optimized for speed and any image profile, other than a color profile, is removed to reduce the thumbnail size.	{thumbnail, P :: integer(), percent \| pixel} \| {thumbnail, W :: integer(), H :: integer()} \| {thumbnail, W :: integer(), H :: integer(), percent \| ignore_ration \| no_enlarge \| no_shrink \| fill}	{thumbnail, 100, 100, no_enlarge}
convert	quality
convert	crop	Cut out a rectangular region of the image.	{crop, W :: integer(), H :: integer(), X :: integer(), Y :: integer()} \| {crop, W :: integer(), H :: integer()}	{crop, 100, 80, 20, 30}
convert	gravity	Sets the current gravity suggestion for various other settings and options. Choices include: NorthWest, North, NorthEast, West, Center, East, SouthWest, South, SouthEast	{gravity, Gravity :: string()}	{gravity, "SouthEast"}
convert	repage or '+repage'	Adjust the canvas and offset information of the image	-	repage
convert	flip	Create a mirror image	-	flip
convert	trim	Trim an image	-	trim
convert	magnify	Double the size of the image with pixel art scaling	-	magnify
convert	rotation	Apply Paeth image rotation (using shear operations) to the image	{rotation, Degrees :: integer()}	{rotation, 90}
convert	'auto-orient'	Adjusts an image so that its orientation is suitable for viewing	-	'auto-orient'
convert	strip	Strip the image of any profiles, comments or these PNG chunks: bKGD,cHRM,EXIF,gAMA,iCCP,iTXt,sRGB,tEXt,zCCP,zTXt,date.	-	strip
convert	blur	Reduce image noise and reduce detail levels	{blur, Radius :: integer()} \| {blur, Radius :: integer(), Sigma :: integer()}	{blur, 0, 8}
convert	edge	Detect edges within an image	{edge, Radius :: integer()}	{edge 3}
convert	size	Set the width and height of the image	{size, Width} \| {size, Width :: integer(), Height :: integer()} \| {size, Width :: integer(), Height :: integer(), Offset :: integer()}	{size, 192, 128}
convert	extent	Set the image size and offset	{extent, Width :: integer(), Height :: integer()}	{extent, 384, 256}
mogrify	geometry	Set the preferred size and location of the image.	{geometry, Scale :: integer(), percent} \| {geometry, Area :: integer(), pixels} \| {geometry, ScaleX :: integer(), ScaleY :: integer(), percent} \| {geometry, Width :: integer()} \| {geometry, Width :: integer(), undefined} \| {geometry, undefined, Height :: integer()} \| {geometry, Width :: integer(), Height :: integer()} \| {geometry, Width :: integer(), Height :: integer(), ignore_ration \| no_enlarge \| no_shrink \| fill} \| {geometry, Width :: integer(), Height :: integer(), X :: integer(), Y :: integer()}	{geometry, 325, 192, 10, 10}
montage	geometry	Set the preferred size and location of the image.	{geometry, Scale :: integer(), percent} \| {geometry, Area :: integer(), pixels} \| {geometry, ScaleX :: integer(), ScaleY :: integer(), percent} \| {geometry, Width :: integer()} \| {geometry, Width :: integer(), undefined} \| {geometry, undefined, Height :: integer()} \| {geometry, Width :: integer(), Height :: integer()} \| {geometry, Width :: integer(), Height :: integer(), ignore_ration \| no_enlarge \| no_shrink \| fill} \| {geometry, Width :: integer(), Height :: integer(), X :: integer(), Y :: integer()}	{geometry, 10, percent}
montage	tile	Specify the layout of images.	{tile, Scale :: integer(), percent} \| {tile, Area :: integer(), pixels} \| {tile, ScaleX :: integer(), ScaleY :: integer(), percent} \| {tile, Width :: integer()} \| {tile, Width :: integer(), undefined} \| {tile, undefined, Height :: integer()} \| {tile, Width :: integer(), Height :: integer()} \| {tile, Width :: integer(), Height :: integer(), ignore_ration \| no_enlarge \| no_shrink \| fill} \| {tile, Width :: integer(), Height :: integer(), X :: integer(), Y :: integer()}	{tile, 234, 186, ignore_ration}

Licence

VICE is available for use under the following license, commonly known as the 3-clause (or "modified") BSD license:

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Modules

## Contributors ## Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds/all-contributors#emoji-key)): | [

_{Gregoire Lejeune}](http://lejeun.es)
[💻](https://github.com/G-Corp/vice/commits?author=glejeune "Code") [🎨](#design-glejeune "Design") [📖](https://github.com/G-Corp/vice/commits?author=glejeune "Documentation") [⚠️](https://github.com/G-Corp/vice/commits?author=glejeune "Tests") | [

_{Augustin G}](https://github.com/agombault)
[💻](https://github.com/G-Corp/vice/commits?author=agombault "Code") [⚠️](https://github.com/G-Corp/vice/commits?author=agombault "Tests") | [

_P](http://twitter.com/sulphur27)
[💻](https://github.com/G-Corp/vice/commits?author=sulphur "Code") [📖](https://github.com/G-Corp/vice/commits?author=sulphur "Documentation") | | :---: | :---: | :---: | This project follows the [all-contributors](https://github.com/kentcdodds/all-contributors) specification. Contributions of any kind welcome!