[FFmpeg-cvslog] avcodec/mjpegdec: Switch default interlaced polarity for MJPG to 1
Michael Niedermayer
git at videolan.org
Wed Mar 19 18:23:01 CET 2014
ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed Mar 19 18:01:04 2014 +0100| [dde16f5aaed327e15049b40a8dfae1f59647e4ec] | committer: Michael Niedermayer
avcodec/mjpegdec: Switch default interlaced polarity for MJPG to 1
Fixes Ticket3229
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=dde16f5aaed327e15049b40a8dfae1f59647e4ec
---
libavcodec/mjpegdec.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index d019f65..123e4d0 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -131,6 +131,9 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */
s->interlace_polarity = 1; /* bottom field first */
av_log(avctx, AV_LOG_DEBUG, "bottom field first\n");
+ } else if (avctx->field_order == AV_FIELD_UNKNOWN) {
+ if (avctx->codec_tag == AV_RL32("MJPG"))
+ s->interlace_polarity = 1;
}
if ( avctx->extradata_size > 8
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