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| author | James Almer <jamrial@gmail.com> | 2016-10-15 18:01:50 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2016-10-15 20:42:07 -0300 |
| commit | bad8bbc26aa3151c734daa9568b14c2c7d9aa6d2 (patch) | |
| tree | 7fd01f7d28839d19258dffb3a3d4c442f88c6628 /libavformat/matroskadec.c | |
| parent | 8e53c1567c7ac2185408f68c1bbf117ab96edabe (diff) | |
| download | ffmpeg-bad8bbc26aa3151c734daa9568b14c2c7d9aa6d2.tar.gz | |
avformat/matroskadec: set aspect ratio only when DisplayWidth and DisplayHeight are in pixels
A missing DisplayUnit element or one with the default value of 0 means
DisplayWidth and DisplayHeight should be interpreted as pixels.
The current code setting st->sample_aspect_ratio is wrong when DisplayUnit
is anything else.
Reviewed-by: Carl Eugen Hoyos <ceffmpeg@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavformat/matroskadec.c')
| -rw-r--r-- | libavformat/matroskadec.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index acf1ccb496..0d17a7ef24 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -168,6 +168,7 @@ typedef struct MatroskaTrackVideo { uint64_t pixel_width; uint64_t pixel_height; EbmlBin color_space; + uint64_t display_unit; uint64_t interlaced; uint64_t field_order; uint64_t stereo_mode; @@ -436,7 +437,7 @@ static const EbmlSyntax matroska_track_video[] = { { MATROSKA_ID_VIDEOPIXELCROPT, EBML_NONE }, { MATROSKA_ID_VIDEOPIXELCROPL, EBML_NONE }, { MATROSKA_ID_VIDEOPIXELCROPR, EBML_NONE }, - { MATROSKA_ID_VIDEODISPLAYUNIT, EBML_NONE }, + { MATROSKA_ID_VIDEODISPLAYUNIT, EBML_UINT, 0, offsetof(MatroskaTrackVideo, display_unit), { .u= MATROSKA_VIDEO_DISPLAYUNIT_PIXELS } }, { MATROSKA_ID_VIDEOFLAGINTERLACED, EBML_UINT, 0, offsetof(MatroskaTrackVideo, interlaced), { .u = MATROSKA_VIDEO_INTERLACE_FLAG_UNDETERMINED } }, { MATROSKA_ID_VIDEOFIELDORDER, EBML_UINT, 0, offsetof(MatroskaTrackVideo, field_order), { .u = MATROSKA_VIDEO_FIELDORDER_UNDETERMINED } }, { MATROSKA_ID_VIDEOSTEREOMODE, EBML_UINT, 0, offsetof(MatroskaTrackVideo, stereo_mode), { .u = MATROSKA_VIDEO_STEREOMODE_TYPE_NB } }, @@ -2296,11 +2297,13 @@ static int matroska_parse_tracks(AVFormatContext *s) if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB) mkv_stereo_mode_display_mul(track->video.stereo_mode, &display_width_mul, &display_height_mul); - av_reduce(&st->sample_aspect_ratio.num, - &st->sample_aspect_ratio.den, - st->codecpar->height * track->video.display_width * display_width_mul, - st->codecpar->width * track->video.display_height * display_height_mul, - 255); + if (track->video.display_unit == MATROSKA_VIDEO_DISPLAYUNIT_PIXELS) { + av_reduce(&st->sample_aspect_ratio.num, + &st->sample_aspect_ratio.den, + st->codecpar->height * track->video.display_width * display_width_mul, + st->codecpar->width * track->video.display_height * display_height_mul, + 255); + } if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) st->need_parsing = AVSTREAM_PARSE_HEADERS; |