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34 int raten, rated, aspectn, aspectd,
ret;
36 const char *colorspace =
"";
37 const char *colorrange =
"";
52 if (aspectn == 0 && aspectd == 1)
57 colorrange =
" XCOLORRANGE=LIMITED";
60 colorrange =
" XCOLORRANGE=FULL";
66 switch (field_order) {
71 default: inter =
'p';
break;
76 colorspace =
" Cmono";
79 colorspace =
" Cmono9";
82 colorspace =
" Cmono10";
85 colorspace =
" Cmono12";
88 colorspace =
" Cmono16";
91 colorspace =
" C411 XYSCSS=411";
94 colorspace =
" C420jpeg XYSCSS=420JPEG";
95 colorrange =
" XCOLORRANGE=FULL";
98 colorspace =
" C422 XYSCSS=422";
99 colorrange =
" XCOLORRANGE=FULL";
102 colorspace =
" C444 XYSCSS=444";
103 colorrange =
" XCOLORRANGE=FULL";
109 default: colorspace =
" C420jpeg XYSCSS=420JPEG";
break;
113 colorspace =
" C422 XYSCSS=422";
116 colorspace =
" C444 XYSCSS=444";
119 colorspace =
" C444alpha XYSCSS=444";
122 colorspace =
" C420p9 XYSCSS=420P9";
125 colorspace =
" C422p9 XYSCSS=422P9";
128 colorspace =
" C444p9 XYSCSS=444P9";
131 colorspace =
" C420p10 XYSCSS=420P10";
134 colorspace =
" C422p10 XYSCSS=422P10";
137 colorspace =
" C444p10 XYSCSS=444P10";
140 colorspace =
" C420p12 XYSCSS=420P12";
143 colorspace =
" C422p12 XYSCSS=422P12";
146 colorspace =
" C444p12 XYSCSS=444P12";
149 colorspace =
" C420p14 XYSCSS=420P14";
152 colorspace =
" C422p14 XYSCSS=422P14";
155 colorspace =
" C444p14 XYSCSS=444P14";
158 colorspace =
" C420p16 XYSCSS=420P16";
161 colorspace =
" C422p16 XYSCSS=422P16";
164 colorspace =
" C444p16 XYSCSS=444P16";
170 aspectn, aspectd, colorspace, colorrange);
173 "Error. YUV4MPEG stream header write failed.\n");
203 for (
int k = 0; k <
desc->nb_components; k++) {
207 if (
desc->nb_components >= 3 && (k == 1 || k == 2)) {
211 plane_width *=
desc->comp[k].step;
213 for (
int i = 0;
i < plane_height;
i++) {
224 if (
s->nb_streams != 1)
233 switch (
s->streams[0]->codecpar->format) {
236 "stream, some mjpegtools might not work.\n");
269 "Use '-strict -1' to encode to this pixel format.\n",
274 "Mjpegtools will not work.\n");
278 "yuv444p, yuv422p, yuv420p, yuv411p and gray8 pixel formats. "
279 "And using 'strict -1' also yuv444p9, yuv422p9, yuv420p9, "
280 "yuv444p10, yuv422p10, yuv420p10, "
281 "yuv444p12, yuv422p12, yuv420p12, "
282 "yuv444p14, yuv422p14, yuv420p14, "
283 "yuv444p16, yuv422p16, yuv420p16, "
285 "gray9, gray10, gray12 "
286 "and gray16 pixel formats. "
287 "Use -pix_fmt to select one.\n");
295 .
p.
name =
"yuv4mpegpipe",
297 .p.extensions =
"y4m",
#define AV_LOG_WARNING
Something somehow does not look correct.
static int yuv4_init(AVFormatContext *s)
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
@ AVCOL_RANGE_JPEG
Full range content.
#define AV_PIX_FMT_YUV420P10
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
@ AV_FIELD_BT
Bottom coded first, top displayed first.
const FFOutputFormat ff_yuv4mpegpipe_muxer
@ AV_FIELD_TT
Top coded_first, top displayed first.
#define AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_GRAY16
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
@ AV_FIELD_TB
Top coded first, bottom displayed first.
#define AV_PIX_FMT_YUV444P10
static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define AV_PIX_FMT_YUV422P16
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
#define AV_PIX_FMT_YUV444P16
#define AV_CEIL_RSHIFT(a, b)
#define AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P16
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
@ AV_CODEC_ID_WRAPPED_AVFRAME
Passthrough codec, AVFrames wrapped in AVPacket.
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
#define AV_PIX_FMT_GRAY10
AVCodecParameters * codecpar
Codec parameters associated with this stream.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
@ AVCHROMA_LOC_LEFT
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
@ AVCHROMA_LOC_TOPLEFT
ITU-R 601, SMPTE 274M 296M S314M(DV 4:1:1), mpeg2 4:2:2.
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
#define AV_PIX_FMT_YUV422P10
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV444P12
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
#define FF_COMPLIANCE_NORMAL
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
static int yuv4_write_header(AVFormatContext *s)
#define i(width, name, range_min, range_max)
@ AV_FIELD_BB
Bottom coded first, bottom displayed first.
enum AVColorRange color_range
Video only.
@ AVCOL_RANGE_MPEG
Narrow or limited range content.
#define AV_PIX_FMT_YUV444P9
enum AVFieldOrder field_order
Video only.
#define AV_PIX_FMT_YUV420P12
enum AVChromaLocation chroma_location
#define AV_PIX_FMT_YUV422P14
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
Writes a formatted string to the context.
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
This structure stores compressed data.
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_YUV420P14
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.