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command: add video-frame-info/{gop,smpte,estimated-smpte}-timecode 

Co-authored-by: Kacper Michajłow <kasper93@gmail.com>
This commit is contained in:
llyyr 2024-09-23 04:08:22 +02:00 committed by Kacper Michajłow
parent 3863221246
commit d33bcc51a7
3 changed files with 40 additions and 0 deletions
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1
DOCS/interface-changes/video-frame-info-timecode.txt Normal file
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@ -0,0 +1 @@
add `video-frame-info/gop-timecode`, `video-frame-info/smpte-timecode` and `video-frame-info/estimated-smpte-timecode`

9
DOCS/man/input.rst
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@ -2733,6 +2733,15 @@ Property list
``video-frame-info/repeat``
Whether the frame must be delayed when decoding.
``video-frame-info/gop-timecode``
String with the GOP timecode encoded in the frame.
``video-frame-info/smpte-timecode``
String with the SMPTE timecode encoded in the frame.
``video-frame-info/estimated-smpte-timecode``
Estimated timecode based on the current playback position and frame count.
``container-fps``
Container FPS. This can easily contain bogus values. For videos that use
modern container formats or video codecs, this will often be incorrect.

30
player/command.c
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@ -28,6 +28,7 @@
#include <ass/ass.h>
#include <libavutil/avstring.h>
#include <libavutil/common.h>
#include <libavutil/timecode.h>
#include "mpv_talloc.h"
#include "client.h"
@ -2524,11 +2525,40 @@ static int mp_property_video_frame_info(void *ctx, struct m_property *prop,
const char *pict_type = f->pict_type >= 1 && f->pict_type <= 3
? pict_types[f->pict_type] : NULL;
char gop_tc[AV_TIMECODE_STR_SIZE] = {0};
char s12m_tc[AV_TIMECODE_STR_SIZE] = {0};
for (int n = 0; n < f->num_ff_side_data; n++) {
struct mp_ff_side_data *mpsd = &f->ff_side_data[n];
if (mpsd->type == AV_FRAME_DATA_GOP_TIMECODE)
av_timecode_make_mpeg_tc_string(gop_tc, *(int64_t*)(mpsd->buf->data));
if (mpctx->vo_chain && mpsd->type == AV_FRAME_DATA_S12M_TIMECODE) {
av_timecode_make_smpte_tc_string2(s12m_tc,
av_d2q(mpctx->vo_chain->filter->container_fps, INT_MAX),
*(uint32_t*)(mpsd->buf->data), 0, 0);
}
}
char approx_smpte[AV_TIMECODE_STR_SIZE] = {0};
if (s12m_tc[0] == '\0' && mpctx->vo_chain) {
const AVTimecode tcr = {
.start = 0,
.flags = AV_TIMECODE_FLAG_DROPFRAME,
.rate = av_d2q(mpctx->vo_chain->filter->container_fps, INT_MAX),
.fps = lrint(mpctx->vo_chain->filter->container_fps),
};
int frame = lrint(get_current_pos_ratio(mpctx, false) * get_frame_count(mpctx));
av_timecode_make_string(&tcr, approx_smpte, frame);
}
struct m_sub_property props[] = {
{"picture-type", SUB_PROP_STR(pict_type), .unavailable = !pict_type},
{"interlaced", SUB_PROP_BOOL(!!(f->fields & MP_IMGFIELD_INTERLACED))},
{"tff", SUB_PROP_BOOL(!!(f->fields & MP_IMGFIELD_TOP_FIRST))},
{"repeat", SUB_PROP_BOOL(!!(f->fields & MP_IMGFIELD_REPEAT_FIRST))},
{"gop-timecode", SUB_PROP_STR(gop_tc), .unavailable = gop_tc[0] == '\0'},
{"smpte-timecode", SUB_PROP_STR(s12m_tc), .unavailable = s12m_tc[0] == '\0'},
{"estimated-smpte-timecode", SUB_PROP_STR(approx_smpte), .unavailable = approx_smpte[0] == '\0'},
{0}
};