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x264.c
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/*****************************************************************************
* x264: top-level x264cli functions
*****************************************************************************
* Copyright (C) 2003-2025 x264 project
*
* Authors: Loren Merritt <[email protected]>
* Laurent Aimar <[email protected]>
* Steven Walters <[email protected]>
* Fiona Glaser <[email protected]>
* Kieran Kunhya <[email protected]>
* Henrik Gramner <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at [email protected].
*****************************************************************************/
#ifdef _WIN32
/* The following two defines must be located before the inclusion of any system header files. */
#define WINVER 0x0500
#define _WIN32_WINNT 0x0500
#endif
#include "x264cli.h"
#ifdef _WIN32
#include <windows.h>
#include <io.h> /* _setmode() */
#include <fcntl.h> /* _O_BINARY */
#endif
#include <signal.h>
#include <getopt.h>
#include <string.h>
#include "x264cli.h"
#include "input/input.h"
#include "output/output.h"
#include "filters/filters.h"
#define QP_MAX_SPEC (51+6*2)
#define QP_MAX (QP_MAX_SPEC+18)
#define FAIL_IF_ERROR( cond, ... ) FAIL_IF_ERR( cond, "x264", __VA_ARGS__ )
#if HAVE_LAVF
#undef DECLARE_ALIGNED
#include <libavformat/avformat.h>
#include <libavutil/pixfmt.h>
#include <libavutil/pixdesc.h>
#endif
#if HAVE_SWSCALE
#undef DECLARE_ALIGNED
#include <libswscale/swscale.h>
#endif
#if HAVE_FFMS
#include <ffms.h>
#endif
#if HAVE_GPAC
#include <gpac/isomedia.h>
#endif
#if HAVE_LSMASH
#include <lsmash.h>
#endif
#ifdef _WIN32
#define CONSOLE_TITLE_SIZE 200
static wchar_t org_console_title[CONSOLE_TITLE_SIZE] = L"";
void x264_cli_set_console_title( const char *title )
{
wchar_t title_utf16[CONSOLE_TITLE_SIZE];
if( MultiByteToWideChar( CP_UTF8, MB_ERR_INVALID_CHARS, title, -1, title_utf16, CONSOLE_TITLE_SIZE ) )
SetConsoleTitleW( title_utf16 );
}
/* Retrieve command line arguments as UTF-8. */
static int get_argv_utf8( int *argc_ptr, char ***argv_ptr )
{
int ret = 0;
wchar_t **argv_utf16 = CommandLineToArgvW( GetCommandLineW(), argc_ptr );
if( argv_utf16 )
{
int argc = *argc_ptr;
int offset = (argc+1) * sizeof(char*);
int size = offset;
for( int i = 0; i < argc; i++ )
size += WideCharToMultiByte( CP_UTF8, 0, argv_utf16[i], -1, NULL, 0, NULL, NULL );
char **argv = *argv_ptr = malloc( size );
if( argv )
{
for( int i = 0; i < argc; i++ )
{
argv[i] = (char*)argv + offset;
offset += WideCharToMultiByte( CP_UTF8, 0, argv_utf16[i], -1, argv[i], size-offset, NULL, NULL );
}
argv[argc] = NULL;
ret = 1;
}
LocalFree( argv_utf16 );
}
return ret;
}
#endif
/* Ctrl-C handler */
static volatile int b_ctrl_c = 0;
static void sigint_handler( int a )
{
b_ctrl_c = 1;
}
typedef struct {
int b_progress;
int i_seek;
hnd_t hin;
hnd_t hout;
FILE *qpfile;
FILE *tcfile_out;
double timebase_convert_multiplier;
int i_pulldown;
} cli_opt_t;
/* file i/o operation structs */
cli_input_t cli_input;
static cli_output_t cli_output;
/* video filter operation struct */
static cli_vid_filter_t filter;
const char * const x264_avcintra_class_names[] = { "50", "100", "200", "300", "480", 0 };
const char * const x264_cqm_names[] = { "flat", "jvt", 0 };
const char * const x264_partition_names[] = { "p8x8", "p4x4", "b8x8", "i8x8", "i4x4", "none", "all", 0 };
const char * const x264_pulldown_names[] = { "none", "22", "32", "64", "double", "triple", "euro", 0 };
const char * const x264_range_names[] = { "auto", "tv", "pc", 0 };
const char * const x264_output_csp_names[] =
{
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT == X264_CSP_I400
"i400",
#endif
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT == X264_CSP_I420
"i420",
#endif
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT == X264_CSP_I422
"i422",
#endif
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT == X264_CSP_I444
"i444", "rgb",
#endif
0
};
const char * const x264_valid_profile_names[] =
{
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT <= X264_CSP_I420
#if HAVE_BITDEPTH8
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT == X264_CSP_I420
"baseline", "main",
#endif
"high",
#endif
#if HAVE_BITDEPTH10
"high10",
#endif
#endif
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT == X264_CSP_I422
"high422",
#endif
"high444", 0
};
const char * const x264_demuxer_names[] =
{
"auto", "raw", "y4m",
#if HAVE_AVS
"avs",
#endif
#if HAVE_VPY
"vpy",
#endif
#if HAVE_LAVF
"lavf",
#endif
#if HAVE_FFMS
"ffms",
#endif
0
};
const char * const x264_muxer_names[] =
{
"auto", "raw", "mkv", "flv",
#if HAVE_GPAC || HAVE_LSMASH
"mp4",
#endif
0
};
static const char * const chroma_format_names[] =
{
[0] = "all",
[X264_CSP_I400] = "i400",
[X264_CSP_I420] = "i420",
[X264_CSP_I422] = "i422",
[X264_CSP_I444] = "i444"
};
typedef struct
{
int mod;
uint8_t pattern[24];
float fps_factor;
} cli_pulldown_t;
enum pulldown_type_e
{
X264_PULLDOWN_22 = 1,
X264_PULLDOWN_32,
X264_PULLDOWN_64,
X264_PULLDOWN_DOUBLE,
X264_PULLDOWN_TRIPLE,
X264_PULLDOWN_EURO
};
#define TB PIC_STRUCT_TOP_BOTTOM
#define BT PIC_STRUCT_BOTTOM_TOP
#define TBT PIC_STRUCT_TOP_BOTTOM_TOP
#define BTB PIC_STRUCT_BOTTOM_TOP_BOTTOM
static const cli_pulldown_t pulldown_values[] =
{
[X264_PULLDOWN_22] = {1, {TB}, 1.0},
[X264_PULLDOWN_32] = {4, {TBT, BT, BTB, TB}, 1.25},
[X264_PULLDOWN_64] = {2, {PIC_STRUCT_DOUBLE, PIC_STRUCT_TRIPLE}, 1.0},
[X264_PULLDOWN_DOUBLE] = {1, {PIC_STRUCT_DOUBLE}, 2.0},
[X264_PULLDOWN_TRIPLE] = {1, {PIC_STRUCT_TRIPLE}, 3.0},
[X264_PULLDOWN_EURO] = {24, {TBT, BT, BT, BT, BT, BT, BT, BT, BT, BT, BT, BT,
BTB, TB, TB, TB, TB, TB, TB, TB, TB, TB, TB, TB}, 25.0/24.0}
};
#undef TB
#undef BT
#undef TBT
#undef BTB
// indexed by pic_struct enum
static const float pulldown_frame_duration[10] = { 0.0, 1, 0.5, 0.5, 1, 1, 1.5, 1.5, 2, 3 };
static void help( x264_param_t *defaults, int longhelp );
static int parse( int argc, char **argv, x264_param_t *param, cli_opt_t *opt );
static int encode( x264_param_t *param, cli_opt_t *opt );
/* logging and printing for within the cli system */
static char *psz_log_file = NULL;
static int cli_log_file_level = -1;
static inline void x264_log_done()
{
if( psz_log_file ) free( psz_log_file );
psz_log_file = NULL;
}
static inline void x264_log_init( const char *file_name )
{
x264_log_done();
psz_log_file = strdup( file_name );
}
static int cli_log_level = X264_LOG_INFO;
void x264_cli_log( const char *name, int i_level, const char *fmt, ... )
{
if( psz_log_file && *psz_log_file && i_level <= cli_log_file_level )
{
va_list arg;
va_start( arg, fmt );
x264_cli_log_file( psz_log_file, i_level, fmt, arg );
va_end( arg );
}
if( i_level > cli_log_level )
return;
char *s_level;
switch( i_level )
{
case X264_LOG_ERROR:
s_level = "FLAW";
break;
case X264_LOG_WARNING:
s_level = "WARN";
break;
case X264_LOG_INFO:
s_level = "INFO";
break;
case X264_LOG_DEBUG:
s_level = "DEBU";
break;
default:
s_level = "ANON";
break;
}
fprintf( stderr, "%s [%s]: ", name, s_level );
va_list arg;
va_start( arg, fmt );
x264_vfprintf( stderr, fmt, arg );
va_end( arg );
}
void x264_cli_log_file( char *p_file_name, int i_level, const char *psz_fmt, va_list arg )
{
char *psz_prefix;
switch( i_level )
{
case X264_LOG_ERROR:
psz_prefix = "FLAW";
break;
case X264_LOG_WARNING:
psz_prefix = "WARN";
break;
case X264_LOG_INFO:
psz_prefix = "INFO";
break;
case X264_LOG_DEBUG:
psz_prefix = "DEBU";
break;
default:
psz_prefix = "ANON";
break;
}
FILE *p_log_file = x264_fopen( p_file_name, "ab" );
if( p_log_file )
{
fprintf( p_log_file, "x264 [%s]: ", psz_prefix );
x264_vfprintf( p_log_file, psz_fmt, arg );
fclose( p_log_file );
}
}
void x264_cli_printf( int i_level, const char *fmt, ... )
{
if( psz_log_file && *psz_log_file )
{
va_list arg;
va_start( arg, fmt );
x264_cli_log_file( psz_log_file, X264_LOG_INFO, fmt, arg );
va_end( arg );
}
if( i_level > cli_log_level )
return;
va_list arg;
va_start( arg, fmt );
x264_vfprintf( stderr, fmt, arg );
va_end( arg );
}
static void print_version_info( void )
{
#ifdef X264_POINTVER
printf( "x264 "X264_POINTVER" [Mod by Patman]\n" );
#else
printf( "x264 0.%d.X [Mod by Patman]\n", X264_BUILD );
#endif
#if HAVE_SWSCALE
printf( "(libswscale %d.%d.%d)\n", LIBSWSCALE_VERSION_MAJOR, LIBSWSCALE_VERSION_MINOR, LIBSWSCALE_VERSION_MICRO );
#endif
#if HAVE_LAVF
printf( "(libavformat %d.%d.%d)\n", LIBAVFORMAT_VERSION_MAJOR, LIBAVFORMAT_VERSION_MINOR, LIBAVFORMAT_VERSION_MICRO );
#endif
#if HAVE_FFMS
printf( "(ffmpegsource %d.%d.%d.%d)\n", FFMS_VERSION >> 24, (FFMS_VERSION & 0xff0000) >> 16, (FFMS_VERSION & 0xff00) >> 8, FFMS_VERSION & 0xff );
#endif
#if HAVE_GPAC
printf( "(gpac " GPAC_VERSION ")\n" );
#endif
#if HAVE_LSMASH
printf( "(lsmash %d.%d.%d)\n", LSMASH_VERSION_MAJOR, LSMASH_VERSION_MINOR, LSMASH_VERSION_MICRO );
#endif
printf( "built on " __DATE__ ", " );
#ifdef __INTEL_COMPILER
printf( "intel: %.2f (%d)\n", __INTEL_COMPILER / 100.f, __INTEL_COMPILER_BUILD_DATE );
#elif defined(__clang__)
printf( "clang: " __clang_version__ "\n" );
#elif defined(__GNUC__)
printf( "gcc: " __VERSION__ "\n" );
#elif defined(_MSC_FULL_VER)
printf( "msvc: %.2f (%u)\n", _MSC_VER / 100.f, _MSC_FULL_VER );
#else
printf( "using an unknown compiler\n" );
#endif
printf( "x264 configuration: --chroma-format=%s\n", chroma_format_names[X264_CHROMA_FORMAT] );
printf( "libx264 configuration: --chroma-format=%s\n", chroma_format_names[x264_chroma_format] );
printf( "x264 license: " );
#if HAVE_GPL
printf( "GPL version 2 or later\n" );
#else
printf( "Non-GPL commercial\n" );
#endif
#if HAVE_SWSCALE
const char *license = swscale_license();
printf( "libswscale%s%s license: %s\n", HAVE_LAVF ? "/libavformat" : "", HAVE_FFMS ? "/ffmpegsource" : "" , license );
if( !strcmp( license, "nonfree and unredistributable" ) ||
(!HAVE_GPL && (!strcmp( license, "GPL version 2 or later" )
|| !strcmp( license, "GPL version 3 or later" ))))
printf( "WARNING: This binary is unredistributable!\n" );
#endif
}
REALIGN_STACK int main( int argc, char **argv )
{
if( argc == 4 && !strcmp( argv[1], "--autocomplete" ) )
return x264_cli_autocomplete( argv[2], argv[3] );
x264_param_t param;
cli_opt_t opt = {0};
int ret = 0;
FAIL_IF_ERROR( x264_threading_init(), "unable to initialize threading\n" );
#ifdef _WIN32
FAIL_IF_ERROR( !get_argv_utf8( &argc, &argv ), "unable to convert command line to UTF-8\n" );
GetConsoleTitleW( org_console_title, CONSOLE_TITLE_SIZE );
_setmode( _fileno( stdin ), _O_BINARY );
_setmode( _fileno( stdout ), _O_BINARY );
_setmode( _fileno( stderr ), _O_BINARY );
#endif
x264_param_default( ¶m );
/* Parse command line */
if( parse( argc, argv, ¶m, &opt ) < 0 )
ret = -1;
#ifdef _WIN32
/* Restore title; it can be changed by input modules */
SetConsoleTitleW( org_console_title );
#endif
/* Control-C handler */
signal( SIGINT, sigint_handler );
if( !ret )
ret = encode( ¶m, &opt );
/* clean up handles */
if( filter.free )
filter.free( opt.hin );
else if( opt.hin )
cli_input.close_file( opt.hin );
if( opt.hout )
cli_output.close_file( opt.hout, 0, 0 );
if( opt.tcfile_out )
fclose( opt.tcfile_out );
if( opt.qpfile )
fclose( opt.qpfile );
x264_param_cleanup( ¶m );
#ifdef _WIN32
SetConsoleTitleW( org_console_title );
free( argv );
#endif
x264_log_done();
return ret;
}
static char const *strtable_lookup( const char * const table[], int idx )
{
int i = 0; while( table[i] ) i++;
return ( idx >= 0 && idx < i && *table[idx] ) ? table[idx] : "???";
}
static char *stringify_names( char *buf, const char * const names[] )
{
int i = 0;
char *p = buf;
for( p[0] = 0; names[i]; i++ )
if( *names[i] )
{
if( p != buf )
p += sprintf( p, ", " );
p += sprintf( p, "%s", names[i] );
}
return buf;
}
#define INDENT " "
#define INDENT_LEN 32 // strlen( INDENT )
#define SEPARATOR ", "
#define SEPARATOR_LEN 2 // strlen( SEPARATOR )
static void print_csp_name_internal( const char *name, size_t *line_len, int last )
{
if( name )
{
size_t name_len = strlen( name );
if( *line_len + name_len > (80 - SEPARATOR_LEN) )
{
printf( "\n" INDENT );
*line_len = INDENT_LEN;
}
printf( "%s", name );
*line_len += name_len;
if( !last )
{
printf( SEPARATOR );
*line_len += SEPARATOR_LEN;
}
}
}
static void print_csp_names( int longhelp )
{
if( longhelp < 2 )
return;
printf( " - valid csps for `raw' demuxer:\n" );
printf( INDENT );
size_t line_len = INDENT_LEN;
for( int i = X264_CSP_NONE+1; i < X264_CSP_CLI_MAX; i++ )
print_csp_name_internal( x264_cli_csps[i].name, &line_len, i == X264_CSP_CLI_MAX-1 );
#if HAVE_LAVF
printf( "\n" );
printf( " - valid csps for `lavf' demuxer:\n" );
printf( INDENT );
line_len = INDENT_LEN;
for( enum AVPixelFormat i = AV_PIX_FMT_NONE+1; i < AV_PIX_FMT_NB; i++ )
print_csp_name_internal( av_get_pix_fmt_name( i ), &line_len, i == AV_PIX_FMT_NB-1 );
#endif
printf( "\n" );
}
static void help( x264_param_t *defaults, int longhelp )
{
char buf[200];
#define H0 printf
#define H1 if( longhelp >= 1 ) printf
#define H2 if( longhelp == 2 ) printf
H0( "x264 core:%d%s [Mod by Patman]\n"
"Syntax: x264 [options] -o outfile infile\n"
"\n"
"Infile can be raw (in which case resolution is required),\n"
" or YUV4MPEG (*.y4m),\n"
" or Avisynth (*.avs) if compiled with support (%s).\n"
" or Vapoursynth (*.vpy) if compiles with support (%s).\n"
" or libav* formats if compiled with lavf support (%s) or ffms support (%s).\n"
"Outfile type is selected by filename:\n"
" .264 -> Raw bytestream\n"
" .mkv -> Matroska\n"
" .flv -> Flash Video\n"
" .mp4 -> MP4 if compiled with GPAC or L-SMASH support (%s)\n"
"Output bit depth: %s\n"
"\n"
"Options:\n"
"\n"
" -h, --help List basic options\n"
" --longhelp List more options\n"
" --fullhelp List all options\n"
"\n",
X264_BUILD, X264_VERSION,
#if HAVE_AVS
"yes",
#else
"no",
#endif
#if HAVE_VPY
"yes",
#else
"no",
#endif
#if HAVE_LAVF
"yes",
#else
"no",
#endif
#if HAVE_FFMS
"yes",
#else
"no",
#endif
#if HAVE_GPAC
"gpac",
#elif HAVE_LSMASH
"lsmash",
#else
"no",
#endif
#if HAVE_BITDEPTH8 && HAVE_BITDEPTH10
"8/10"
#elif HAVE_BITDEPTH8
"8"
#elif HAVE_BITDEPTH10
"10"
#else
"none"
#endif
);
H0( "Example usage:\n" );
H0( "\n" );
H0( " Constant quality mode:\n" );
H0( " x264 --crf 24 -o <output> <input>\n" );
H0( "\n" );
H0( " Two-pass with a bitrate of 1000kbps:\n" );
H0( " x264 --pass 1 --bitrate 1000 -o <output> <input>\n" );
H0( " x264 --pass 2 --bitrate 1000 -o <output> <input>\n" );
H0( "\n" );
H0( " Lossless:\n" );
H0( " x264 --qp 0 -o <output> <input>\n" );
H0( "\n" );
H0( " Maximum PSNR at the cost of speed and visual quality:\n" );
H0( " x264 --preset placebo --tune psnr -o <output> <input>\n" );
H0( "\n" );
H0( " Constant bitrate at 1000kbps with a 2 second-buffer:\n");
H0( " x264 --vbv-bufsize 2000 --bitrate 1000 -o <output> <input>\n" );
H0( "\n" );
H0( "Presets:\n" );
H0( "\n" );
H0( " --profile <string> Force the limits of an H.264 profile\n"
" Overrides all settings.\n" );
H2(
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT <= X264_CSP_I420
#if HAVE_BITDEPTH8
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT == X264_CSP_I420
" - baseline:\n"
" --no-8x8dct --bframes 0 --no-cabac\n"
" --cqm flat --weightp 0\n"
" No interlaced.\n"
" No lossless.\n"
" - main:\n"
" --no-8x8dct --cqm flat\n"
" No lossless.\n"
#endif
" - high:\n"
" No lossless.\n"
#endif
#if HAVE_BITDEPTH10
" - high10:\n"
" No lossless.\n"
" Support for bit depth 8-10.\n"
#endif
#endif
#if !X264_CHROMA_FORMAT || X264_CHROMA_FORMAT == X264_CSP_I422
" - high422:\n"
" No lossless.\n"
" Support for bit depth 8-10.\n"
" Support for 4:2:0/4:2:2 chroma subsampling.\n"
#endif
" - high444:\n"
" Support for bit depth 8-10.\n"
" Support for 4:2:0/4:2:2/4:4:4 chroma subsampling.\n" );
else H0( " - %s\n", stringify_names( buf, x264_valid_profile_names ) );
H0( " --preset <string> Use a preset to select encoding settings [medium]\n"
" Overridden by user settings.\n" );
H2( " - ultrafast:\n"
" --no-8x8dct --aq-mode 0 --b-adapt 0\n"
" --bframes 0 --no-cabac --no-deblock\n"
" --no-mbtree --me dia --no-mixed-refs\n"
" --partitions none --rc-lookahead 0 --ref 1\n"
" --scenecut 0 --subme 0 --trellis 0\n"
" --no-weightb --weightp 0\n"
" - superfast:\n"
" --no-mbtree --me dia --no-mixed-refs\n"
" --partitions i8x8,i4x4 --rc-lookahead 0\n"
" --ref 1 --subme 1 --trellis 0 --weightp 1\n"
" - veryfast:\n"
" --no-mixed-refs --rc-lookahead 10\n"
" --ref 1 --subme 2 --trellis 0 --weightp 1\n"
" - faster:\n"
" --no-mixed-refs --rc-lookahead 20\n"
" --ref 2 --subme 4 --weightp 1\n"
" - fast:\n"
" --rc-lookahead 30 --ref 2 --subme 6\n"
" --weightp 1\n"
" - medium:\n"
" Default settings apply.\n"
" - slow:\n"
" --direct auto --rc-lookahead 50 --ref 5\n"
" --subme 8 --trellis 2\n"
" - slower:\n"
" --b-adapt 2 --direct auto --me umh\n"
" --partitions all --rc-lookahead 60\n"
" --ref 8 --subme 9 --trellis 2\n"
" - veryslow:\n"
" --b-adapt 2 --bframes 8 --direct auto\n"
" --me umh --merange 24 --partitions all\n"
" --ref 16 --subme 10 --trellis 2\n"
" --rc-lookahead 60\n"
" - placebo:\n"
" --bframes 16 --b-adapt 2 --direct auto\n"
" --slow-firstpass --no-fast-pskip\n"
" --me tesa --merange 24 --partitions all\n"
" --rc-lookahead 60 --ref 16 --subme 11\n"
" --trellis 2\n" );
else H0( " - ultrafast,superfast,veryfast,faster,fast\n"
" - medium,slow,slower,veryslow,placebo\n" );
H0( " --tune <string> Tune the settings for a particular type of source\n"
" or situation\n"
" Overridden by user settings.\n"
" Multiple tunings are separated by commas.\n"
" Only one psy tuning can be used at a time.\n" );
H2( " - film (psy tuning):\n"
" --deblock -1:-1 --psy-rd <unset>:0.15\n"
" - animation (psy tuning):\n"
" --bframes {+2} --deblock 1:1\n"
" --psy-rd 0.4:<unset> --aq-strength 0.6\n"
" --ref {Double if >1 else 1}\n"
" - grain (psy tuning):\n"
" --aq-strength 0.5 --no-dct-decimate\n"
" --deadzone-inter 6 --deadzone-intra 6\n"
" --deblock -2:-2 --ipratio 1.1\n"
" --pbratio 1.1 --psy-rd <unset>:0.25\n"
" --qcomp 0.8\n"
" - stillimage (psy tuning):\n"
" --aq-strength 1.2 --deblock -3:-3\n"
" --psy-rd 2.0:0.7\n"
" - psnr (psy tuning):\n"
" --aq-mode 0 --no-psy\n"
" - ssim (psy tuning):\n"
" --aq-mode 2 --no-psy\n"
" - fastdecode:\n"
" --no-cabac --no-deblock --no-weightb\n"
" --weightp 0\n"
" - zerolatency:\n"
" --bframes 0 --force-cfr --no-mbtree\n"
" --sync-lookahead 0 --sliced-threads\n"
" --rc-lookahead 0\n" );
else H0( " - psy tunings: film,animation,grain,\n"
" stillimage,psnr,ssim\n"
" - other tunings: fastdecode,zerolatency\n" );
H2( " --slow-firstpass Don't force these faster settings with --pass 1:\n"
" --no-8x8dct --me dia --partitions none\n"
" --ref 1 --subme {2 if >2 else unchanged}\n"
" --trellis 0 --fast-pskip\n" );
else H1( " --slow-firstpass Don't force faster settings with --pass 1\n" );
H0( "\n" );
H0( "Frame-type options:\n" );
H0( "\n" );
H0( " -I, --keyint <integer> <string or \"infinite\"> Maximum GOP size [%d]\n"
" - auto: Set the keyint to fps * 10\n", defaults->i_keyint_max );
H2( " -i, --min-keyint <integer> Minimum GOP size [auto]\n" );
H2( " --no-scenecut Disable adaptive I-frame decision\n" );
H2( " --scenecut <integer> How aggressively to insert extra I-frames [%d]\n", defaults->i_scenecut_threshold );
H2( " --intra-refresh Use Periodic Intra Refresh instead of IDR frames\n" );
H1( " -b, --bframes <integer> Number of B-frames between I and P [%d]\n", defaults->i_bframe );
H1( " --b-adapt <integer> Adaptive B-frame decision method [%d]\n"
" Higher values may lower threading efficiency.\n"
" - 0: Disabled\n"
" - 1: Fast\n"
" - 2: Optimal (slow with high --bframes)\n", defaults->i_bframe_adaptive );
H2( " --b-bias <integer> Influences how often B-frames are used [%d]\n", defaults->i_bframe_bias );
H1( " --b-pyramid <string> Keep some B-frames as references [%s]\n"
" - none: Disabled\n"
" - strict: Strictly hierarchical pyramid\n"
" - normal: Non-strict (not Blu-ray compatible)\n",
strtable_lookup( x264_b_pyramid_names, defaults->i_bframe_pyramid ) );
H1( " --open-gop Use recovery points to close GOPs\n"
" Only available with b-frames\n" );
H1( " --no-cabac Disable CABAC\n" );
H1( " -r, --ref <integer> Number of reference frames [%d]\n", defaults->i_frame_reference );
H1( " --no-deblock Disable loop filter\n" );
H1( " -f, --deblock <alpha:beta> Loop filter parameters [%d:%d]\n",
defaults->i_deblocking_filter_alphac0, defaults->i_deblocking_filter_beta );
H2( " --slices <integer> Number of slices per frame; forces rectangular\n"
" slices and is overridden by other slicing options\n" );
else H1( " --slices <integer> Number of slices per frame\n" );
H2( " --slices-max <integer> Absolute maximum slices per frame; overrides\n"
" slice-max-size/slice-max-mbs when necessary\n" );
H2( " --slice-max-size <integer> Limit the size of each slice in bytes\n");
H2( " --slice-max-mbs <integer> Limit the size of each slice in macroblocks (max)\n");
H2( " --slice-min-mbs <integer> Limit the size of each slice in macroblocks (min)\n");
H0( " --tff Enable interlaced mode (top field first)\n" );
H0( " --bff Enable interlaced mode (bottom field first)\n" );
H2( " --constrained-intra Enable constrained intra prediction.\n" );
H0( " --pulldown <string> Use soft pulldown to change frame rate\n"
" - %s (requires cfr input)\n", stringify_names( buf, x264_pulldown_names ) );
H2( " --fake-interlaced Flag stream as interlaced but encode progressive.\n"
" Makes it possible to encode 25p and 30p Blu-Ray\n"
" streams. Ignored in interlaced mode.\n" );
H2( " --frame-packing <integer> For stereoscopic videos define frame arrangement\n"
" - 0: checkerboard - pixels are alternatively from L and R\n"
" - 1: column alternation - L and R are interlaced by column\n"
" - 2: row alternation - L and R are interlaced by row\n"
" - 3: side by side - L is on the left, R on the right\n"
" - 4: top bottom - L is on top, R on bottom\n"
" - 5: frame alternation - one view per frame\n"
" - 6: mono - 2D frame without any frame packing\n"
" - 7: tile format - L is on top-left, R split across\n" );
H0( "\n" );
H0( "Ratecontrol:\n" );
H0( "\n" );
H1( " -q, --qp <integer> Force constant QP (0-%d, 0=lossless)\n", QP_MAX );
H0( " -B, --bitrate <integer> Set bitrate (kbit/s)\n" );
H0( " --crf <float> Quality-based VBR (%d-51) [%.1f]\n", 51 - QP_MAX_SPEC, defaults->rc.f_rf_constant );
H1( " --rc-lookahead <integer> Number of frames for frametype lookahead [%d]\n", defaults->rc.i_lookahead );
H0( " --vbv-maxrate <string> or <integer> Max local bitrate (kbit/s) [%d]\n"
" - auto_high444: Set the VBV maxrate to fit in the target level of High 4:4:4 Predictive Profile\n"
" - auto_high422: Set the VBV maxrate to fit in the target level of High 4:2:2 Profile\n"
" - auto_high10: Set the VBV maxrate to fit in the target level of High 10 Profile\n"
" - auto_high: Set the VBV maxrate to fit in the target level of High Profile\n"
" - auto_main: Set the VBV maxrate to fit in the target level of Main and Baseline Profile\n", defaults->rc.i_vbv_max_bitrate );
H0( " --vbv-bufsize <string> or <integer> Set size of the VBV buffer (kbit) [%d]\n"
" - auto_high444: Set the VBV bufsize to fit in the target level of High 4:4:4 Predictive Profile\n"
" - auto_high422: Set the VBV bufsize to fit in the target level of High 4:2:2 Profile\n"
" - auto_high10: Set the VBV bufsize to fit in the target level of High 10 Profile\n"
" - auto_high: Set the VBV bufsize to fit in the target level of High Profile\n"
" - auto_main: Set the VBV bufsize to fit in the target level of Main and Baseline Profile\n", defaults->rc.i_vbv_buffer_size );
H2( " --vbv-init <float> Initial VBV buffer occupancy [%.1f]\n", defaults->rc.f_vbv_buffer_init );
H2( " --crf-max <float> With CRF+VBV, limit RF to this value\n"
" May cause VBV underflows!\n" );
H2( " --qpmin <integer> Set min QP [%d]\n", defaults->rc.i_qp_min );
H2( " --qpmax <integer> Set max QP [%d]\n", X264_MIN( defaults->rc.i_qp_max, QP_MAX ) );
H2( " --qpstep <integer> Set max QP step [%d]\n", defaults->rc.i_qp_step );
H2( " --ratetol <float> Tolerance of ABR ratecontrol and VBV [%.1f]\n", defaults->rc.f_rate_tolerance );
H2( " --ipratio <float> QP factor between I and P [%.2f]\n", defaults->rc.f_ip_factor );
H2( " --pbratio <float> QP factor between P and B [%.2f]\n", defaults->rc.f_pb_factor );
H2( " --chroma-qp-offset <integer> QP difference between chroma and luma [%d]\n", defaults->analyse.i_chroma_qp_offset );
H2( " --aq-mode <integer> AQ method [%d]\n"
" - 0: Disabled\n"
" - 1: Variance AQ (complexity mask)\n"
" - 2: Auto-variance AQ\n"
" - 3: Auto-variance AQ with bias to dark scenes\n", defaults->rc.i_aq_mode );
H1( " --aq-strength <float> Reduces blocking and blurring in flat and\n"
" textured areas. [%.1f]\n", defaults->rc.f_aq_strength );
H1( " --aq-bias-strength <float> Adjust the bias to darks strength in AQ mode 3, effective bias is aq-strength * aq-bias-strength [%.1f]\n", defaults->rc.f_aq_bias_strength );
H1( "\n" );
H0( " -p, --pass <integer> Enable multipass ratecontrol\n"
" - 1: First pass, creates stats file\n"
" - 2: Last pass, does not overwrite stats file\n" );
H2( " - 3: Nth pass, overwrites stats file\n" );
H1( " --stats <string> Filename for 2 pass stats [\"%s\"]\n", defaults->rc.psz_stat_out );
H2( " --no-mbtree Disable mb-tree ratecontrol.\n");
H2( " --qcomp <float> QP curve compression [%.2f]\n", defaults->rc.f_qcompress );
H2( " --cplxblur <float> Reduce fluctuations in QP (before curve compression) [%.1f]\n", defaults->rc.f_complexity_blur );
H2( " --qblur <float> Reduce fluctuations in QP (after curve compression) [%.1f]\n", defaults->rc.f_qblur );
H2( " --zones <zone0>/<zone1>/... Tweak the bitrate of regions of the video\n" );
H2( " Each zone is of the form\n"
" <start frame>,<end frame>,<option>\n"
" where <option> is either\n"
" q=<integer> (force QP)\n"
" or b=<float> (bitrate multiplier)\n" );
H2( " --qpfile <string> Force frametypes and QPs for some or all frames\n"
" Format of each line: framenumber frametype QP\n"
" QP is optional (none lets x264 choose). Frametypes: I,i,K,P,B,b.\n"
" K=<I or i> depending on open-gop setting\n"
" QPs are restricted by qpmin/qpmax.\n" );
H1( "\n" );
H1( "Analysis:\n" );
H1( "\n" );
H1( " -A, --partitions <string> Partitions to consider [\"p8x8,b8x8,i8x8,i4x4\"]\n"
" - %s\n"
" (p4x4 requires p8x8. i8x8 requires --8x8dct.)\n", stringify_names( buf, x264_partition_names ) );
H1( " --direct <string> Direct MV prediction mode [\"%s\"]\n"
" - none, spatial, temporal, auto\n",
strtable_lookup( x264_direct_pred_names, defaults->analyse.i_direct_mv_pred ) );
H2( " --no-weightb Disable weighted prediction for B-frames\n" );
H1( " --weightp <integer> Weighted prediction for P-frames [%d]\n"
" - 0: Disabled\n"
" - 1: Weighted refs\n"
" - 2: Weighted refs + Duplicates\n", defaults->analyse.i_weighted_pred );
H1( " --me <string> Integer pixel motion estimation method [\"%s\"]\n",
strtable_lookup( x264_motion_est_names, defaults->analyse.i_me_method ) );
H2( " - dia: diamond search, radius 1 (fast)\n"
" - hex: hexagonal search, radius 2\n"
" - umh: uneven multi-hexagon search\n"
" - esa: exhaustive search\n"
" - tesa: hadamard exhaustive search (slow)\n" );
else H1( " - dia, hex, umh\n" );
H2( " --merange <integer> Maximum motion vector search range [%d]\n", defaults->analyse.i_me_range );
H2( " --mvrange <integer> Maximum motion vector length [-1 (auto)]\n" );
H2( " --mvrange-thread <int> Minimum buffer between threads [-1 (auto)]\n" );
H1( " -m, --subme <integer> Subpixel motion estimation and mode decision [%d]\n", defaults->analyse.i_subpel_refine );
H2( " - 0: fullpel only (not recommended)\n"
" - 1: SAD mode decision, one qpel iteration\n"
" - 2: SATD mode decision\n"
" - 3-5: Progressively more qpel\n"
" - 6: RD mode decision for I/P-frames\n"
" - 7: RD mode decision for all frames\n"
" - 8: RD refinement for I/P-frames\n"
" - 9: RD refinement for all frames\n"
" - 10: QP-RD - requires trellis=2, aq-mode>0\n"
" - 11: Full RD: disable all early terminations\n" );
else H1( " decision quality: 1=fast, 11=best\n" );
H1( " --psy-rd <float:float> Strength of psychovisual optimization [\"%.1f:%.1f\"]\n"
" #1: RD (requires subme>=6)\n"
" #2: Trellis (requires trellis, experimental)\n",
defaults->analyse.f_psy_rd, defaults->analyse.f_psy_trellis );
H2( " --no-psy Disable all visual optimizations that worsen\n"
" both PSNR and SSIM.\n" );
H2( " --no-mixed-refs Don't decide references on a per partition basis\n" );
H2( " --no-chroma-me Ignore chroma in motion estimation\n" );
H1( " --no-8x8dct Disable adaptive spatial transform size\n" );
H1( " -t, --trellis <integer> Trellis RD quantization. [%d]\n"
" - 0: disabled\n"
" - 1: enabled only on the final encode of a MB\n"
" - 2: enabled on all mode decisions\n", defaults->analyse.i_trellis );
H2( " --no-fast-pskip Disables early SKIP detection on P-frames\n" );
H2( " --no-dct-decimate Disables coefficient thresholding on P-frames\n" );
H1( " --nr <integer> Noise reduction [%d]\n", defaults->analyse.i_noise_reduction );
H2( "\n" );
H2( " --deadzone-inter <int> Set the size of the inter luma quantization deadzone [%d]\n", defaults->analyse.i_luma_deadzone[0] );
H2( " --deadzone-intra <int> Set the size of the intra luma quantization deadzone [%d]\n", defaults->analyse.i_luma_deadzone[1] );
H2( " Deadzones should be in the range 0 - 32.\n" );
H2( " --cqm <string> Preset quant matrices [\"%s\"]\n"
" - %s\n", x264_cqm_names[0], stringify_names( buf, x264_cqm_names ) );
H1( " --cqmfile <string> Read custom quant matrices from a JM-compatible file\n" );
H2( " Overrides any other --cqm* options.\n" );
H2( " --cqm4 <list> Set all 4x4 quant matrices\n"
" Takes a comma-separated list of 16 integers.\n" );
H2( " --cqm8 <list> Set all 8x8 quant matrices\n"
" Takes a comma-separated list of 64 integers.\n" );
H2( " --cqm4i, --cqm4p, --cqm8i, --cqm8p <list>\n"
" Set both luma and chroma quant matrices\n" );
H2( " --cqm4iy, --cqm4ic, --cqm4py, --cqm4pc <list>\n"
" Set individual quant matrices\n" );
H2( "\n" );
H2( "Video Usability Info (Annex E):\n" );
H2( "The VUI settings are not used by the encoder but are merely suggestions to\n" );
H2( "the playback equipment. See doc/vui.txt for details. Use at your own risk.\n" );
H2( "\n" );
H2( " --overscan <string> Specify crop overscan setting [\"%s\"]\n"
" - undef, show, crop\n",
strtable_lookup( x264_overscan_names, defaults->vui.i_overscan ) );
H2( " --videoformat <string> Specify video format [\"%s\"]\n"
" - component, pal, ntsc, secam, mac, undef\n",
strtable_lookup( x264_vidformat_names, defaults->vui.i_vidformat ) );
H2( " --range <string> Specify color range [\"%s\"]\n"
" - %s\n", x264_range_names[0], stringify_names( buf, x264_range_names ) );
H2( " --colorprim <string> Specify color primaries [\"%s\"]\n"
" - undef, bt709, bt470m, bt470bg, smpte170m,\n"
" smpte240m, film, bt2020, smpte428,\n"
" smpte431, smpte432\n",
strtable_lookup( x264_colorprim_names, defaults->vui.i_colorprim ) );
H2( " --transfer <string> Specify transfer characteristics [\"%s\"]\n"
" - undef, bt709, bt470m, bt470bg, smpte170m,\n"
" smpte240m, linear, log100, log316,\n"
" iec61966-2-4, bt1361e, iec61966-2-1,\n"
" bt2020-10, bt2020-12, smpte2084, smpte428,\n"
" arib-std-b67\n",
strtable_lookup( x264_transfer_names, defaults->vui.i_transfer ) );
H2( " --colormatrix <string> Specify color matrix setting [\"%s\"]\n"
" - undef, bt709, fcc, bt470bg, smpte170m,\n"
" smpte240m, GBR, YCgCo, bt2020nc, bt2020c,\n"
" smpte2085, chroma-derived-nc,\n"
" chroma-derived-c, ICtCp\n",
strtable_lookup( x264_colmatrix_names, defaults->vui.i_colmatrix ) );
H2( " --chromaloc <integer> Specify chroma sample location (0 to 5) [%d]\n",
defaults->vui.i_chroma_loc );
H2( " --mastering-display <string> Specify 'G(x,y)B(x,y)R(x,y)WP(x,y)L(max,min)'\n"
" for primaries, white point, and display brightness\n" );
H2( " --cll <string> Specify 'max_content,max_frame_average' content\n"
" light levels\n" );
H2( " --alternative-transfer <string> Specify an alternative transfer\n"
" characteristics [\"%s\"]\n"
" - same values as --transfer\n",
strtable_lookup( x264_transfer_names, defaults->i_alternative_transfer ) );
H2( " --nal-hrd <string> Signal HRD information (requires vbv-bufsize)\n"
" - none, vbr, cbr (cbr not allowed in .mp4)\n" );
H2( " --filler Force hard-CBR and generate filler (implied by\n"
" --nal-hrd cbr)\n" );
H2( " --pic-struct Force pic_struct in Picture Timing SEI\n" );
H2( " --crop-rect <string> Add 'left,top,right,bottom' to the bitstream-level\n"
" cropping rectangle\n" );
H0( "\n" );
H0( "Input/Output:\n" );
H0( "\n" );
H0( " -o, --output <string> Specify output file\n" );
H1( " --muxer <string> Specify output container format [\"%s\"]\n"
" - %s\n", x264_muxer_names[0], stringify_names( buf, x264_muxer_names ) );
H1( " --demuxer <string> Specify input container format [\"%s\"]\n"
" - %s\n", x264_demuxer_names[0], stringify_names( buf, x264_demuxer_names ) );
H1( " --synth-lib <string> Load external avisynth / vapoursynth library from given full path\n" );
H1( " --input-fmt <string> Specify input file format (requires lavf support)\n" );
H1( " --input-csp <string> Specify input colorspace format for raw input\n" );
print_csp_names( longhelp );
H1( " --output-csp <string> Specify output colorspace [\"%s\"]\n"
" - %s\n",
#if X264_CHROMA_FORMAT
x264_output_csp_names[0],
#else
"i420",
#endif
stringify_names( buf, x264_output_csp_names ) );