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|
/*******************************************************************************
lqt_x264.c
libquicktime - A library for reading and writing quicktime/avi/mp4 files.
http://libquicktime.sourceforge.net
Copyright (C) 2002 Heroine Virtual Ltd.
Copyright (C) 2002-2011 Members of the libquicktime project.
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free
Software Foundation; either version 2.1 of the License, or (at your option)
any later version.
This library 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 Lesser General Public License for more
details.
You should have received a copy of the GNU Lesser General Public License along
with this library; if not, write to the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*******************************************************************************/
#include "lqt_private.h"
#include <quicktime/lqt_codecapi.h>
#include <x264.h> // X264_BUILD value
#include "qtx264.h"
static char * fourccs_x264[] = { "avc1", (char*)0 };
static lqt_parameter_info_static_t encode_parameters_x264[] =
{
{
.name = "x264_sec_frame_type",
.real_name = TRS("Frame-type options"),
.type = LQT_PARAMETER_SECTION
},
{
.name = "x264_i_keyint_max",
.real_name = TRS("Maximum GOP size"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 250 },
},
{
.name = "x264_i_keyint_min",
.real_name = TRS("Minimum GOP size"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 25 },
},
{
.name = "x264_i_scenecut_threshold",
.real_name = TRS("Scenecut threshold"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 40 },
.help_string = TRS("How aggressively to insert extra I-frames")
},
{
.name = "x264_i_bframe",
.real_name = TRS("B-Frames"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 16 },
.help_string = TRS("Number of B-frames between I and P"),
},
#if X264_BUILD < 63
{
.name = "x264_b_bframe_adaptive",
.real_name = TRS("Adaptive B-frame decision"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
},
#else
{
.name = "x264_i_bframe_adaptive",
.real_name = TRS("Adaptive B-frame decision"),
.type = LQT_PARAMETER_STRINGLIST,
.val_default = { .val_string = "Fast" },
.stringlist_options = (char*[]){ TRS("None"),
TRS("Fast"),
TRS("Trellis"),
(char*)0 },
},
#endif
{
.name = "x264_i_bframe_bias",
.real_name = TRS("B-frame bias"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.val_min = { .val_int = -90 },
.val_max = { .val_int = 100 },
.help_string = TRS("Influences how often B-frames are used"),
},
#if X264_BUILD >= 88
{
.name = "x264_i_bframe_pyramid",
.real_name = TRS("B-frame pyramid"),
.type = LQT_PARAMETER_STRINGLIST,
.val_default = { .val_string = "Normal" },
.stringlist_options = (char*[]){ TRS("None"),
TRS("Strict"),
TRS("Normal"),
(char*)0 },
.help_string = TRS("Keep some B-frames as references")
},
#elif X264_BUILD >= 78
{
.name = "x264_i_bframe_pyramid",
.real_name = TRS("B-frame pyramid"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 2 },
.help_string = TRS("Keep some B-frames as references")
},
#else
{
.name = "x264_b_bframe_pyramid",
.real_name = TRS("B-frame pyramid"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.help_string = TRS("Keep some B-frames as references")
},
#endif
{
.name = "x264_sec_ratecontrol",
.real_name = TRS("Ratecontrol"),
.type = LQT_PARAMETER_SECTION
},
{
.name = "x264_i_rc_method",
.real_name = TRS("Ratecontrol method"),
.type = LQT_PARAMETER_STRINGLIST,
.val_default = { .val_string = "CRF based VBR" },
.stringlist_options = (char*[]){ TRS("Constant quality"),
TRS("CRF based VBR"),
TRS("Average bitrate"),
(char*)0 },
.help_string = TRS("Ratecontrol method:\n"
"Constant quality: Specify a quantizer parameter below\n"
"CRF based VBR: Specify a rate factor below\n"
"Average bitrate: Specify a bitrate below\n"
"Selecting 2-pass encoding will force Average bitrate."),
},
{
.name = "x264_i_bitrate",
.real_name = TRS("Bitrate"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.help_string = TRS("Bitrate in kbit/s. 0 means VBR (recommended)")
},
{
.name = "x264_f_rate_tolerance",
.real_name = TRS("Bitrate tolerance"),
.type = LQT_PARAMETER_FLOAT,
.val_default = { .val_float = 1.0 },
.val_min = { .val_float = 0.0 },
.val_max = { .val_float = 100.0 },
.num_digits = 1,
.help_string = TRS("Allowed variance of average bitrate")
},
{
.name = "x264_i_vbv_max_bitrate",
.real_name = TRS("Maximum local bitrate"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.help_string = TRS("Sets a maximum local bitrate in kbits/s.")
},
{
.name = "x264_i_vbv_buffer_size",
.real_name = TRS("VBV Buffer size"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.help_string = TRS("Averaging period for the maximum local bitrate. "
"Measured in kbits.")
},
{
.name = "x264_f_vbv_buffer_init",
.real_name = TRS("Initial VBV buffer occupancy"),
.type = LQT_PARAMETER_FLOAT,
.num_digits = 2,
.val_default = { .val_float = 0.9 },
.val_min = { .val_float = 0.0 },
.val_max = { .val_float = 1.0 },
.help_string = TRS("Sets the initial VBV buffer occupancy as a fraction of "
"the buffer size.")
},
#if X264_BUILD >= 69
{
.name = "x264_b_psy",
.real_name = TRS("Psy optimizations"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.val_default = { .val_int = 1 },
.help_string = TRS("Psychovisual optimization"),
},
#endif
#if X264_BUILD >= 63
{
.name = "x264_f_psy_rd",
.real_name = TRS("Psy RD strength"),
.type = LQT_PARAMETER_FLOAT,
.num_digits = 2,
.val_min = { .val_float = 0.0 },
.val_max = { .val_float = 10.0 },
.val_default = { .val_float = 1.0 },
.help_string = TRS("Strength of psychovisual optimization: RD (requires Partition decision >= 6)"),
},
{
.name = "x264_f_psy_trellis",
.real_name = TRS("Psy trellis strength"),
.type = LQT_PARAMETER_FLOAT,
.num_digits = 2,
.val_min = { .val_float = 0.0 },
.val_max = { .val_float = 10.0 },
.val_default = { .val_float = 0.0 },
.help_string = TRS("Strength of psychovisual optimization (requires trellis)"),
},
#endif
#if X264_BUILD >= 69
{
.name = "x264_b_mb_tree",
.real_name = TRS("Macroblock-tree ratecontrol"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.val_default = { .val_int = 1 },
},
{
.name = "x264_i_lookahead",
.real_name = TRS("Lookahead"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 0 },
.val_max = { .val_int = 250 },
.val_default = { .val_int = 40 },
.help_string = TRS("Number of frames for frametype lookahead"),
},
#endif
{
.name = "x264_sec_quantizer",
.real_name = TRS("Quantizer"),
.type = LQT_PARAMETER_SECTION
},
#if X264_BUILD < 54
{
.name = "x264_i_rf_constant",
.real_name = TRS("Nominal Quantizer parameter"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 26 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 51 },
.help_string = TRS("This selects the nominal quantizer to use (1 to 51). "
"Lower values result in better fidelity, but higher "
"bitrates. 26 is a good default value. 0 means lossless.")
},
#else
{
.name = "x264_f_rf_constant",
.real_name = TRS("Nominal Quantizer parameter"),
.type = LQT_PARAMETER_FLOAT,
.val_default = { .val_float = 23.0 },
.val_min = { .val_float = 0.0 },
.val_max = { .val_float = 51.0 },
.help_string = TRS("This selects the nominal quantizer to use (1 to 51). "
"Lower values result in better fidelity, but higher "
"bitrates. 26 is a good default value. 0 means lossless.")
},
#endif
{
.name = "x264_i_qp_constant",
.real_name = TRS("Quantizer parameter"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 23 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 51 },
.help_string = TRS("This selects the quantizer to use (1 to 51). Lower "
"values result in better fidelity, but higher bitrates. "
"26 is a good default value. 0 means lossless.")
},
{
.name = "x264_i_qp_min",
.real_name = TRS("Minimum quantizer parameter"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 10 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 51 },
.help_string = TRS("Minimum quantizer parameter")
},
{
.name = "x264_i_qp_max",
.real_name = TRS("Maximum quantizer parameter"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 51 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 51 },
.help_string = TRS("Maximum quantizer parameter")
},
{
.name = "x264_i_qp_step",
.real_name = TRS("Maximum QP step"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 4 },
.val_min = { .val_int = 1 },
.val_max = { .val_int = 50 },
.help_string = TRS("Maximum quantizer step")
},
{
.name = "x264_f_ip_factor",
.real_name = TRS("QP factor between I and P"),
.type = LQT_PARAMETER_FLOAT,
.num_digits = 2,
.val_default = { .val_float = 1.40 },
},
{
.name = "x264_f_pb_factor",
.real_name = TRS("QP factor between P and B"),
.type = LQT_PARAMETER_FLOAT,
.num_digits = 2,
.val_default = { .val_float = 1.30 },
},
#if X264_BUILD >= 62
{
.name = "x264_i_aq_mode",
.real_name = TRS("Adaptive quantization"),
.type = LQT_PARAMETER_STRINGLIST,
.val_default = { .val_string = "Variance AQ (complexity mask)" },
.stringlist_options = (char*[]){ TRS("None"),
TRS("Variance AQ (complexity mask)"),
#if X264_BUILD >= 69
TRS("Autovariance AQ (experimental)"),
#endif
(char*)0 },
},
{
.name = "x264_f_aq_strength",
.real_name = TRS("AQ strength"),
.type = LQT_PARAMETER_FLOAT,
.num_digits = 2,
.val_min = { .val_float = 0.5 },
.val_max = { .val_float = 1.5 },
.val_default = { .val_float = 1.0 },
.help_string = TRS("Adaptive quantization strength:\n"
"Reduces blocking and blurring in flat and\n"
"textured areas"),
},
#endif
#if X264_BUILD >= 88
{
.name = "x264_f_qcompress",
.real_name = TRS("QP curve compression"),
.type = LQT_PARAMETER_FLOAT,
.num_digits = 2,
.val_min = { .val_float = 0.0 },
.val_max = { .val_float = 1.0 },
.val_default = { .val_float = 0.6 },
.help_string = TRS("Only for 2-pass encoding"),
},
{
.name = "x264_f_qblur",
.real_name = TRS("QP Reduce fluctuations in QP (after curve compression)"),
.type = LQT_PARAMETER_FLOAT,
.num_digits = 2,
.val_default = { .val_float = 0.5 },
.help_string = TRS("Only for 2-pass encoding"),
},
{
.name = "x264_f_complexity_blur",
.real_name = TRS("Temporally blur complexity"),
.type = LQT_PARAMETER_FLOAT,
.num_digits = 2,
.val_default = { .val_float = 20 },
.help_string = TRS("Only for 2-pass encoding"),
},
{
.name = "x264_i_chroma_qp_offset",
.real_name = TRS("QP difference between chroma and luma"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
},
{
.name = "x264_i_luma_deadzone_0",
.real_name = TRS("Inter luma quantization deadzone"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 21 },
},
{
.name = "x264_i_luma_deadzone_1",
.real_name = TRS("Intra luma quantization deadzone"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 11 },
},
#endif
{
.name = "x264_sec_partitions",
.real_name = TRS("Partitions"),
.type = LQT_PARAMETER_SECTION,
},
{
.name = "x264_analyse_8x8_transform",
.real_name = TRS("8x8 transform"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
},
{
.name = "x264_analyse_psub16x16",
.real_name = TRS("8x16, 16x8 and 8x8 P-frame search"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
},
{
.name = "x264_analyse_bsub16x16",
.real_name = TRS("8x16, 16x8 and 8x8 B-frame search"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
},
{
.name = "x264_analyse_psub8x8",
.real_name = TRS("4x8, 8x4 and 4x4 P-frame search"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
},
{
.name = "x264_analyse_i8x8",
.real_name = TRS("8x8 Intra search"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.help_string = TRS("8x8 Intra search requires 8x8 transform"),
},
{
.name = "x264_analyse_i4x4",
.real_name = TRS("4x4 Intra search"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
},
{
.name = "x264_sec_me",
.real_name = TRS("Motion estimation"),
.type = LQT_PARAMETER_SECTION,
},
{
.name = "x264_i_me_method",
.real_name = TRS("Method"),
.type = LQT_PARAMETER_STRINGLIST,
.val_default = { .val_string = "Hexagonal search" },
.stringlist_options = (char*[]){ TRS("Diamond search"),
TRS("Hexagonal search"),
TRS("Uneven Multi-Hexagon"),
TRS("Exhaustive search"),
#if X264_BUILD > 57
TRS("Hadamard exhaustive search (slow)"),
#endif
(char*)0 },
.help_string = TRS("Motion estimation method\n"
"Diamond search: fastest\n"
"Hexagonal search: default setting\n"
"Uneven Multi-Hexagon: better but slower\n"
"Exhaustive search: extremely slow, primarily for testing")
},
{
.name = "x264_i_subpel_refine",
.real_name = TRS("Partition decision"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 1 },
#if X264_BUILD < 65
.val_max = { .val_int = 7 },
#else
.val_max = { .val_int = 9 },
#endif
#if X264_BUILD < 88
.val_default = { .val_int = 5 },
#else
.val_default = { .val_int = 7 },
#endif
.help_string = TRS("Subpixel motion estimation and partition decision "
#if X264_BUILD < 65
"quality: 1=fast, 7=best.")
#else
"quality: 1=fast, 9=best.")
#endif
},
#if X264_BUILD < 65
{
.name = "x264_b_bframe_rdo",
.real_name = TRS("RD based mode decision for B-frames"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.val_default = { .val_int = 0 },
.help_string = TRS("RD based mode decision for B-frames. Requires partition "
"decision 6.")
},
#endif
{
.name = "x264_i_me_range",
.real_name = TRS("Search range"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 16 },
.help_string = TRS("Maximum distance to search for motion estimation, "
"measured from predicted position(s). Default of 16 is "
"good for most footage, high motion sequences may benefit "
"from settings between 24-32.")
},
{
.name = "x264_i_frame_reference",
.real_name = TRS("Max Ref. frames"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 1 },
.val_max = { .val_int = 16 },
.val_default = { .val_int = 1 },
.help_string = TRS("This is effective in Anime, but seems to make little "
"difference in live-action source material. Some decoders "
"are unable to deal with large frameref values.")
},
{
.name = "x264_b_chroma_me",
.real_name = TRS("Chroma motion estimation"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.val_default = { .val_int = 1 },
},
{
.name = "x264_b_mixed_references",
.real_name = TRS("Mixed references"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.val_default = { .val_int = 1 },
.help_string = TRS("Allow each MB partition in P-frames to have it's own "
"reference number")
},
#if X264_BUILD < 65
{
.name = "x264_b_bidir_me",
.real_name = TRS("Bidirectional ME"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.val_default = { .val_int = 0 },
.help_string = TRS("Jointly optimize both MVs in B-frames")
},
#endif
{
.name = "x264_b_weighted_bipred",
.real_name = TRS("Weighted biprediction"),
.type = LQT_PARAMETER_INT,
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.val_default = { .val_int = 0 },
.help_string = TRS("Implicit weighting for B-frames")
},
#if X264_BUILD >= 88
{
.name = "x264_i_weighted_pred",
.real_name = TRS("Weighted prediction for P-frames"),
.type = LQT_PARAMETER_STRINGLIST,
.val_default = { .val_string = "Smart analysis" },
.stringlist_options = (char*[]){ TRS("Disabled"),
TRS("Blind offset"),
TRS("Smart analysis"),
(char*)0 },
},
#endif
{
.name = "x264_i_direct_mv_pred",
.real_name = TRS("Direct MV prediction mode"),
.type = LQT_PARAMETER_STRINGLIST,
.val_default = { .val_string = "Spatial" },
.stringlist_options = (char*[]){ TRS("None"),
TRS("Spatial"),
TRS("Temporal"),
TRS("Auto"),
(char*)0 },
},
{
.name = "x264_sec_misc",
.real_name = TRS("Misc"),
.type = LQT_PARAMETER_SECTION,
},
{
.name = "x264_b_deblocking_filter",
.real_name = TRS("Deblocking filter"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.help_string = TRS("Use deblocking loop filter (increases quality).")
},
{
.name = "x264_i_deblocking_filter_alphac0",
.real_name = TRS("Deblocking filter strength"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.val_min = { .val_int = -6 },
.val_max = { .val_int = 6 },
.help_string = TRS("Loop filter AlphaC0 parameter")
},
{
.name = "x264_i_deblocking_filter_beta",
.real_name = TRS("Deblocking filter threshold"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.val_min = { .val_int = -6 },
.val_max = { .val_int = 6 },
.help_string = TRS("Loop filter Beta parameter")
},
{
.name = "x264_b_cabac",
.real_name = TRS("Enable CABAC"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
.help_string = TRS("Enable CABAC (Context-Adaptive Binary Arithmetic "
"Coding). Slightly slows down encoding and decoding, but "
"should save 10-15% bitrate.")
},
{
.name = "x264_i_trellis",
.real_name = TRS("Trellis RD quantization"),
.type = LQT_PARAMETER_STRINGLIST,
.val_default = { .val_string = "Enabled (final)" },
.stringlist_options = (char*[]){ TRS("Disabled"),
TRS("Enabled (final)"),
TRS("Enabled (always)"),
(char*)0 },
.help_string = TRS("Trellis RD quantization. Requires CABAC. Can be enabled "
"either for the final encode of a MB or for all mode "
"desisions")
},
{
.name = "x264_i_noise_reduction",
.real_name = TRS("Noise reduction"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 0 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1<<16 }
},
#if X264_BUILD >= 28
{
.name = "x264_i_threads",
.real_name = TRS("Threads"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
// .val_min = { .val_int = },
// .val_max = { .val_int = 256 },
.help_string = TRS("Number of threads")
},
#endif
#if X264_BUILD >= 88
{
.name = "x264_b_fast_pskip",
.real_name = TRS("early SKIP detection on P-frames"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
},
{
.name = "x264_b_dct_decimate",
.real_name = TRS("Transform coefficient thresholding on P-frames"),
.type = LQT_PARAMETER_INT,
.val_default = { .val_int = 1 },
.val_min = { .val_int = 0 },
.val_max = { .val_int = 1 },
},
#endif
{ /* End of parameters */ }
};
static lqt_codec_info_static_t codec_info_x264 =
{
.name = "x264",
.long_name = TRS("H.264 (MPEG4 AVC) encoder"),
.description = TRS("Based on the x264 library"),
.fourccs = fourccs_x264,
.type = LQT_CODEC_VIDEO,
.direction = LQT_DIRECTION_ENCODE,
.encoding_parameters = encode_parameters_x264,
.decoding_parameters = (lqt_parameter_info_static_t*)0,
.compatibility_flags = LQT_FILE_QT_OLD |
LQT_FILE_QT |
LQT_FILE_MP4 |
LQT_FILE_AVI |
LQT_FILE_AVI_ODML,
.compression_id = LQT_COMPRESSION_H264,
};
/* These are called from the plugin loader */
LQT_EXTERN int get_num_codecs() { return 1; }
LQT_EXTERN lqt_codec_info_static_t * get_codec_info(int index)
{
switch(index)
{
case 0:
return &codec_info_x264;
}
return (lqt_codec_info_static_t*)0;
}
/*
* Return the actual codec constructor
*/
LQT_EXTERN lqt_init_codec_func_t get_codec(int index)
{
switch(index)
{
case 0:
return quicktime_init_codec_x264;
break;
}
return (lqt_init_codec_func_t)0;
}
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