/* * libxeve encoder * EVC (MPEG-5 Essential Video Coding) encoding using XEVE MPEG-5 EVC encoder library * * Copyright (C) 2021 Dawid Kozinski * * This file is part of FFmpeg. * * FFmpeg 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. * * FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include "libavutil/internal.h" #include "libavutil/common.h" #include "libavutil/opt.h" #include "libavutil/pixdesc.h" #include "libavutil/pixfmt.h" #include "libavutil/time.h" #include "libavutil/cpu.h" #include "libavutil/avstring.h" #include "avcodec.h" #include "internal.h" #include "packet_internal.h" #include "codec_internal.h" #include "profiles.h" #include "encode.h" #define MAX_BS_BUF (16*1024*1024) /** * Error codes */ #define XEVE_PARAM_BAD_NAME -100 #define XEVE_PARAM_BAD_VALUE -200 /** * Encoder states * * STATE_ENCODING - the encoder receives and processes input frames * STATE_BUMPING - there are no more input frames, however the encoder still processes previously received data */ typedef enum State { STATE_ENCODING, STATE_BUMPING, } State; /** * The structure stores all the states associated with the instance of Xeve MPEG-5 EVC encoder */ typedef struct XeveContext { const AVClass *class; XEVE id; // XEVE instance identifier XEVE_CDSC cdsc; // coding parameters i.e profile, width & height of input frame, num of therads, frame rate ... XEVE_BITB bitb; // bitstream buffer (output) XEVE_STAT stat; // encoding status (output) XEVE_IMGB imgb; // image buffer (input) State state; // encoder state (skipping, encoding, bumping) int profile_id; // encoder profile (main, baseline) int preset_id; // preset of xeve ( fast, medium, slow, placebo) int tune_id; // tune of xeve (psnr, zerolatency) // variables for rate control modes int rc_mode; // Rate control mode [ 0(CQP) / 1(ABR) / 2(CRF) ] int qp; // quantization parameter (QP) [0,51] int crf; // constant rate factor (CRF) [10,49] int hash; // embed picture signature (HASH) for conformance checking in decoding int sei_info; // embed Supplemental enhancement information while encoding int color_format; // input data color format: currently only XEVE_CF_YCBCR420 is supported AVDictionary *xeve_params; } XeveContext; /** * Convert FFmpeg pixel format (AVPixelFormat) to XEVE pre-defined color format * * @param[in] av_pix_fmt pixel format (@see https://ffmpeg.org/doxygen/trunk/pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5) * @param[out] xeve_col_fmt XEVE pre-defined color format (@see xeve.h) * * @return 0 on success, negative value on failure */ static int libxeve_color_fmt(enum AVPixelFormat av_pix_fmt, int *xeve_col_fmt) { switch (av_pix_fmt) { case AV_PIX_FMT_YUV420P: *xeve_col_fmt = XEVE_CF_YCBCR420; break; case AV_PIX_FMT_YUV420P10: *xeve_col_fmt = XEVE_CF_YCBCR420; break; default: *xeve_col_fmt = XEVE_CF_UNKNOWN; return AVERROR_INVALIDDATA; } return 0; } /** * Convert FFmpeg pixel format (AVPixelFormat) into XEVE pre-defined color space * * @param[in] px_fmt pixel format (@see https://ffmpeg.org/doxygen/trunk/pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5) * * @return XEVE pre-defined color space (@see xeve.h) on success, XEVE_CF_UNKNOWN on failure */ static int libxeve_color_space(enum AVPixelFormat av_pix_fmt) { /* color space of input image */ int cs = XEVE_CF_UNKNOWN; switch (av_pix_fmt) { case AV_PIX_FMT_YUV420P: cs = XEVE_CS_YCBCR420; break; case AV_PIX_FMT_YUV420P10: #if AV_HAVE_BIGENDIAN cs = XEVE_CS_SET(XEVE_CF_YCBCR420, 10, 1); #else cs = XEVE_CS_YCBCR420_10LE; #endif break; default: cs = XEVE_CF_UNKNOWN; break; } return cs; } /** * The function returns a pointer to the object of the XEVE_CDSC type. * XEVE_CDSC contains all encoder parameters that should be initialized before the encoder is used. * * The field values of the XEVE_CDSC structure are populated based on: * - the corresponding field values of the AvCodecConetxt structure, * - the xeve encoder specific option values, * (the full list of options available for xeve encoder is displayed after executing the command ./ffmpeg --help encoder = libxeve) * * The order of processing input data and populating the XEVE_CDSC structure * 1) first, the fields of the AVCodecContext structure corresponding to the provided input options are processed, * (i.e -pix_fmt yuv420p -s:v 1920x1080 -r 30 -profile:v 0) * 2) then xeve-specific options added as AVOption to the xeve AVCodec implementation * (i.e -preset 0) * * Keep in mind that, there are options that can be set in different ways. * In this case, please follow the above-mentioned order of processing. * The most recent assignments overwrite the previous values. * * @param[in] avctx codec context (AVCodecContext) * @param[out] cdsc contains all Xeve MPEG-5 EVC encoder encoder parameters that should be initialized before the encoder is use * * @return 0 on success, negative error code on failure */ static int get_conf(AVCodecContext *avctx, XEVE_CDSC *cdsc) { XeveContext *xectx = NULL; int ret; xectx = avctx->priv_data; /* initialize xeve_param struct with default values */ ret = xeve_param_default(&cdsc->param); if (XEVE_FAILED(ret)) { av_log(avctx, AV_LOG_ERROR, "Cannot set_default parameter\n"); return AVERROR_EXTERNAL; } /* read options from AVCodecContext */ if (avctx->width > 0) cdsc->param.w = avctx->width; if (avctx->height > 0) cdsc->param.h = avctx->height; if (avctx->framerate.num > 0) { // fps can be float number, but xeve API doesn't support it cdsc->param.fps = lrintf(av_q2d(avctx->framerate)); } // GOP size (key-frame interval, I-picture period) cdsc->param.keyint = avctx->gop_size; // 0: only one I-frame at the first time; 1: every frame is coded in I-frame if (avctx->max_b_frames == 0 || avctx->max_b_frames == 1 || avctx->max_b_frames == 3 || avctx->max_b_frames == 7 || avctx->max_b_frames == 15) // number of b-frames cdsc->param.bframes = avctx->max_b_frames; else { av_log(avctx, AV_LOG_ERROR, "Incorrect value for maximum number of B frames: (%d) \n" "Acceptable values for bf option (maximum number of B frames) are 0,1,3,7 or 15\n", avctx->max_b_frames); return AVERROR_INVALIDDATA; } cdsc->param.level_idc = avctx->level; if (avctx->rc_buffer_size) // VBV buf size cdsc->param.vbv_bufsize = (int)(avctx->rc_buffer_size / 1000); cdsc->param.rc_type = xectx->rc_mode; if (xectx->rc_mode == XEVE_RC_CQP) cdsc->param.qp = xectx->qp; else if (xectx->rc_mode == XEVE_RC_ABR) { if (avctx->bit_rate / 1000 > INT_MAX || avctx->rc_max_rate / 1000 > INT_MAX) { av_log(avctx, AV_LOG_ERROR, "Not supported bitrate bit_rate and rc_max_rate > %d000\n", INT_MAX); return AVERROR_INVALIDDATA; } cdsc->param.bitrate = (int)(avctx->bit_rate / 1000); } else if (xectx->rc_mode == XEVE_RC_CRF) cdsc->param.crf = xectx->crf; else { av_log(avctx, AV_LOG_ERROR, "Not supported rate control type: %d\n", xectx->rc_mode); return AVERROR_INVALIDDATA; } if (avctx->thread_count <= 0) { int cpu_count = av_cpu_count(); cdsc->param.threads = (cpu_count < XEVE_MAX_THREADS) ? cpu_count : XEVE_MAX_THREADS; } else if (avctx->thread_count > XEVE_MAX_THREADS) cdsc->param.threads = XEVE_MAX_THREADS; else cdsc->param.threads = avctx->thread_count; libxeve_color_fmt(avctx->pix_fmt, &xectx->color_format); cdsc->param.cs = XEVE_CS_SET(xectx->color_format, cdsc->param.codec_bit_depth, AV_HAVE_BIGENDIAN); cdsc->max_bs_buf_size = MAX_BS_BUF; ret = xeve_param_ppt(&cdsc->param, xectx->profile_id, xectx->preset_id, xectx->tune_id); if (XEVE_FAILED(ret)) { av_log(avctx, AV_LOG_ERROR, "Cannot set profile(%d), preset(%d), tune(%d)\n", xectx->profile_id, xectx->preset_id, xectx->tune_id); return AVERROR_EXTERNAL; } return 0; } /** * Set XEVE_CFG_SET_USE_PIC_SIGNATURE for encoder * * @param[in] logger context * @param[in] id XEVE encodec instance identifier * @param[in] ctx the structure stores all the states associated with the instance of Xeve MPEG-5 EVC encoder * * @return 0 on success, negative error code on failure */ static int set_extra_config(AVCodecContext *avctx, XEVE id, XeveContext *ctx) { int ret, size; size = 4; // embed SEI messages identifying encoder parameters and command line arguments // - 0: off\n" // - 1: emit sei info" // // SEI - Supplemental enhancement information contains information // that is not necessary to decode the samples of coded pictures from VCL NAL units. // Some SEI message information is required to check bitstream conformance // and for output timing decoder conformance. // @see ISO_IEC_23094-1_2020 7.4.3.5 // @see ISO_IEC_23094-1_2020 Annex D ret = xeve_config(id, XEVE_CFG_SET_SEI_CMD, &ctx->sei_info, &size); // sei_cmd_info if (XEVE_FAILED(ret)) { av_log(avctx, AV_LOG_ERROR, "Failed to set config for sei command info messages\n"); return AVERROR_EXTERNAL; } ret = xeve_config(id, XEVE_CFG_SET_USE_PIC_SIGNATURE, &ctx->hash, &size); if (XEVE_FAILED(ret)) { av_log(avctx, AV_LOG_ERROR, "Failed to set config for picture signature\n"); return AVERROR_EXTERNAL; } return 0; } /** * @brief Switch encoder to bumping mode * * @param id XEVE encodec instance identifier * @return 0 on success, negative error code on failure */ static int setup_bumping(XEVE id) { int val = 1; int size = sizeof(int); if (XEVE_FAILED(xeve_config(id, XEVE_CFG_SET_FORCE_OUT, (void *)(&val), &size))) return AVERROR_EXTERNAL; return 0; } /** * @brief Initialize eXtra-fast Essential Video Encoder codec * Create an encoder instance and allocate all the needed resources * * @param avctx codec context * @return 0 on success, negative error code on failure */ static av_cold int libxeve_init(AVCodecContext *avctx) { XeveContext *xectx = avctx->priv_data; unsigned char *bs_buf = NULL; int i; int shift_h = 0; int shift_v = 0; int width_chroma = 0; int height_chroma = 0; XEVE_IMGB *imgb = NULL; int ret = 0; XEVE_CDSC *cdsc = &(xectx->cdsc); /* allocate bitstream buffer */ bs_buf = av_malloc(MAX_BS_BUF); if (bs_buf == NULL) { av_log(avctx, AV_LOG_ERROR, "Cannot allocate bitstream buffer\n"); return AVERROR(ENOMEM); } xectx->bitb.addr = bs_buf; xectx->bitb.bsize = MAX_BS_BUF; /* read configurations and set values for created descriptor (XEVE_CDSC) */ if ((ret = get_conf(avctx, cdsc)) != 0) { av_log(avctx, AV_LOG_ERROR, "Cannot get configuration\n"); return AVERROR(EINVAL); } if ((ret = xeve_param_check(&cdsc->param)) != 0) { av_log(avctx, AV_LOG_ERROR, "Invalid configuration\n"); return AVERROR(EINVAL); } { AVDictionaryEntry *en = NULL; while (en = av_dict_get(xectx->xeve_params, "", en, AV_DICT_IGNORE_SUFFIX)) { if ((ret = xeve_param_parse(&cdsc->param, en->key, en->value)) < 0) { av_log(avctx, AV_LOG_WARNING, "Error parsing option '%s = %s'.\n", en->key, en->value); } } } /* create encoder */ xectx->id = xeve_create(cdsc, NULL); if (xectx->id == NULL) { av_log(avctx, AV_LOG_ERROR, "Cannot create XEVE encoder\n"); return AVERROR_EXTERNAL; } if ((ret = set_extra_config(avctx, xectx->id, xectx)) != 0) { av_log(avctx, AV_LOG_ERROR, "Cannot set extra configuration\n"); return AVERROR(EINVAL); } if ((ret = av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &shift_h, &shift_v)) != 0) { av_log(avctx, AV_LOG_ERROR, "Failed to get chroma shift\n"); return AVERROR(EINVAL); } // Chroma subsampling // // YUV format explanation // shift_h == 1 && shift_v == 1 : YUV420 // shift_h == 1 && shift_v == 0 : YUV422 // shift_h == 0 && shift_v == 0 : YUV444 // width_chroma = AV_CEIL_RSHIFT(avctx->width, shift_h); height_chroma = AV_CEIL_RSHIFT(avctx->height, shift_v); /* set default values for input image buffer */ imgb = &xectx->imgb; imgb->cs = libxeve_color_space(avctx->pix_fmt); imgb->np = 3; /* only for yuv420p, yuv420ple */ for (i = 0; i < imgb->np; i++) imgb->x[i] = imgb->y[i] = 0; imgb->w[0] = imgb->aw[0] = avctx->width; // width luma imgb->w[1] = imgb->w[2] = imgb->aw[1] = imgb->aw[2] = width_chroma; imgb->h[0] = imgb->ah[0] = avctx->height; // height luma imgb->h[1] = imgb->h[2] = imgb->ah[1] = imgb->ah[2] = height_chroma; xectx->state = STATE_ENCODING; return 0; } /** * Encode raw data frame into EVC packet * * @param[in] avctx codec context * @param[out] avpkt output AVPacket containing encoded data * @param[in] frame AVFrame containing the raw data to be encoded * @param[out] got_packet encoder sets to 0 or 1 to indicate that a * non-empty packet was returned in pkt * * @return 0 on success, negative error code on failure */ static int libxeve_encode(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet) { XeveContext *xectx = avctx->priv_data; int ret = -1; // No more input frames are available but encoder still can have some data in its internal buffer to process // and some frames to dump. if (xectx->state == STATE_ENCODING && frame == NULL) { if (setup_bumping(xectx->id) == 0) xectx->state = STATE_BUMPING; // Entering bumping process else { av_log(avctx, AV_LOG_ERROR, "Failed to setup bumping\n"); return 0; } } if (xectx->state == STATE_ENCODING) { int i; XEVE_IMGB *imgb = NULL; imgb = &xectx->imgb; for (i = 0; i < imgb->np; i++) { imgb->a[i] = frame->data[i]; imgb->s[i] = frame->linesize[i]; } imgb->ts[XEVE_TS_PTS] = frame->pts; /* push image to encoder */ ret = xeve_push(xectx->id, imgb); if (XEVE_FAILED(ret)) { av_log(avctx, AV_LOG_ERROR, "xeve_push() failed\n"); return AVERROR_EXTERNAL; } } if (xectx->state == STATE_ENCODING || xectx->state == STATE_BUMPING) { /* encoding */ ret = xeve_encode(xectx->id, &(xectx->bitb), &(xectx->stat)); if (XEVE_FAILED(ret)) { av_log(avctx, AV_LOG_ERROR, "xeve_encode() failed\n"); return AVERROR_EXTERNAL; } /* store bitstream */ if (ret == XEVE_OK_OUT_NOT_AVAILABLE) { // Return OK but picture is not available yet *got_packet = 0; return 0; } else if (ret == XEVE_OK) { int av_pic_type; if (xectx->stat.write > 0) { ret = ff_get_encode_buffer(avctx, avpkt, xectx->stat.write, 0); if (ret < 0) return ret; memcpy(avpkt->data, xectx->bitb.addr, xectx->stat.write); avpkt->time_base.num = 1; avpkt->time_base.den = xectx->cdsc.param.fps; avpkt->pts = xectx->bitb.ts[XEVE_TS_PTS]; avpkt->dts = xectx->bitb.ts[XEVE_TS_DTS]; switch(xectx->stat.stype) { case XEVE_ST_I: av_pic_type = AV_PICTURE_TYPE_I; avpkt->flags |= AV_PKT_FLAG_KEY; break; case XEVE_ST_P: av_pic_type = AV_PICTURE_TYPE_P; break; case XEVE_ST_B: av_pic_type = AV_PICTURE_TYPE_B; break; case XEVE_ST_UNKNOWN: av_log(avctx, AV_LOG_ERROR, "Unknown slice type\n"); return AVERROR_INVALIDDATA; } ff_side_data_set_encoder_stats(avpkt, xectx->stat.qp * FF_QP2LAMBDA, NULL, 0, av_pic_type); *got_packet = 1; } } else if (ret == XEVE_OK_NO_MORE_FRM) { // Return OK but no more frames return 0; } else { av_log(avctx, AV_LOG_ERROR, "Invalid return value: %d\n", ret); return AVERROR_EXTERNAL; } } else { av_log(avctx, AV_LOG_ERROR, "Udefined encoder state\n"); return AVERROR_INVALIDDATA; } return 0; } /** * Destroy the encoder and release all the allocated resources * * @param avctx codec context * @return 0 on success, negative error code on failure */ static av_cold int libxeve_close(AVCodecContext *avctx) { XeveContext *xectx = avctx->priv_data; if (xectx->id) { xeve_delete(xectx->id); xectx->id = NULL; } av_free(xectx->bitb.addr); /* release bitstream buffer */ return 0; } #define OFFSET(x) offsetof(XeveContext, x) #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const enum AVPixelFormat supported_pixel_formats[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_NONE }; // Consider using following options (./ffmpeg --help encoder=libxeve) // static const AVOption libxeve_options[] = { { "preset", "Encoding preset for setting encoding speed", OFFSET(preset_id), AV_OPT_TYPE_INT, { .i64 = XEVE_PRESET_MEDIUM }, XEVE_PRESET_DEFAULT, XEVE_PRESET_PLACEBO, VE, "preset" }, { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_DEFAULT }, INT_MIN, INT_MAX, VE, "preset" }, { "fast", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_FAST }, INT_MIN, INT_MAX, VE, "preset" }, { "medium", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_MEDIUM }, INT_MIN, INT_MAX, VE, "preset" }, { "slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_SLOW }, INT_MIN, INT_MAX, VE, "preset" }, { "placebo", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PRESET_PLACEBO }, INT_MIN, INT_MAX, VE, "preset" }, { "tune", "Tuning parameter for special purpose operation", OFFSET(tune_id), AV_OPT_TYPE_INT, { .i64 = XEVE_TUNE_NONE }, XEVE_TUNE_NONE, XEVE_TUNE_PSNR, VE, "tune"}, { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_TUNE_NONE }, INT_MIN, INT_MAX, VE, "tune" }, { "zerolatency", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_TUNE_ZEROLATENCY }, INT_MIN, INT_MAX, VE, "tune" }, { "psnr", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_TUNE_PSNR }, INT_MIN, INT_MAX, VE, "tune" }, { "profile", "Encoding profile", OFFSET(profile_id), AV_OPT_TYPE_INT, { .i64 = XEVE_PROFILE_BASELINE }, XEVE_PROFILE_BASELINE, XEVE_PROFILE_MAIN, VE, "profile" }, { "baseline", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PROFILE_BASELINE }, INT_MIN, INT_MAX, VE, "profile" }, { "main", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_PROFILE_MAIN }, INT_MIN, INT_MAX, VE, "profile" }, { "rc_mode", "Rate control mode", OFFSET(rc_mode), AV_OPT_TYPE_INT, { .i64 = XEVE_RC_CQP }, XEVE_RC_CQP, XEVE_RC_CRF, VE, "rc_mode" }, { "CQP", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_RC_CQP }, INT_MIN, INT_MAX, VE, "rc_mode" }, { "ABR", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_RC_ABR }, INT_MIN, INT_MAX, VE, "rc_mode" }, { "CRF", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XEVE_RC_CRF }, INT_MIN, INT_MAX, VE, "rc_mode" }, { "qp", "Quantization parameter value for CQP rate control mode", OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 32 }, 0, 51, VE }, { "crf", "Constant rate factor value for CRF rate control mode", OFFSET(crf), AV_OPT_TYPE_INT, { .i64 = 32 }, 10, 49, VE }, { "hash", "Embed picture signature (HASH) for conformance checking in decoding", OFFSET(hash), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, { "sei_info", "Embed SEI messages identifying encoder parameters and command line arguments", OFFSET(sei_info), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, { "xeve-params", "Override the xeve configuration using a :-separated list of key=value parameters", OFFSET(xeve_params), AV_OPT_TYPE_DICT, { 0 }, 0, 0, VE }, { NULL } }; static const AVClass libxeve_class = { .class_name = "libxeve", .option = libxeve_options, .version = LIBAVUTIL_VERSION_INT, }; /** * libavcodec generic global options, which can be set on all the encoders and decoders * @see https://www.ffmpeg.org/ffmpeg-codecs.html#Codec-Options */ static const FFCodecDefault libxeve_defaults[] = { { "b", "0" }, // bitrate in terms of kilo-bits per second { "g", "0" }, // gop_size (key-frame interval 0: only one I-frame at the first time; 1: every frame is coded in I-frame) { "bf", "15"}, // maximum number of B frames (0: no B-frames, 1,3,7,15) { "threads", "0"}, // number of threads to be used (0: automatically select the number of threads to set) { NULL }, }; const FFCodec ff_libxeve_encoder = { .p.name = "libxeve", .p.long_name = NULL_IF_CONFIG_SMALL("libxeve MPEG-5 EVC"), .p.type = AVMEDIA_TYPE_VIDEO, .p.id = AV_CODEC_ID_EVC, .init = libxeve_init, FF_CODEC_ENCODE_CB(libxeve_encode), .close = libxeve_close, .priv_data_size = sizeof(XeveContext), .p.priv_class = &libxeve_class, .defaults = libxeve_defaults, .p.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_OTHER_THREADS | AV_CODEC_CAP_DR1, .p.profiles = NULL_IF_CONFIG_SMALL(ff_evc_profiles), .p.wrapper_name = "libxeve", .p.pix_fmts = supported_pixel_formats, .caps_internal = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_NOT_INIT_THREADSAFE, };