Am 23.07.2014 17:16 schrieb "Marc-Antoine Arnaud" <
arnaud.marcanto...@gmail.com>:
>
> ---
> libavcodec/mpeg12enc.c | 2 +-
> libavcodec/mpegvideo_enc.c | 1 +
> 2 files changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
> index f87286a..84d9508 100644
> --- a/libavcodec/mpeg12enc.c
> +++ b/libavcodec/mpeg12enc.c
> @@ -424,7 +424,7 @@ void ff_mpeg1_encode_picture_header(MpegEncContext
*s, int picture_number)
> if (s->progressive_sequence)
> put_bits(&s->pb, 1, 0); /* no repeat */
> else
> - put_bits(&s->pb, 1,
s->current_picture_ptr->f->top_field_first);
> + put_bits(&s->pb, 1, s->top_field_first);
> /* XXX: optimize the generation of this flag with entropy
measures */
> s->frame_pred_frame_dct = s->progressive_sequence;
>
> diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
> index fa4840e..ddc3d7e 100644
> --- a/libavcodec/mpegvideo_enc.c
> +++ b/libavcodec/mpegvideo_enc.c
> @@ -311,6 +311,7 @@ av_cold int ff_MPV_encode_init(AVCodecContext *avctx)
> s->rtp_mode = !!avctx->rtp_payload_size;
> s->intra_dc_precision = avctx->intra_dc_precision;
> s->user_specified_pts = AV_NOPTS_VALUE;
> + s->top_field_first = (s->avctx->field_order == AV_FIELD_TT);
>
> if (s->gop_size <= 1) {
> s->intra_only = 1;
This is a per-frame property, the current code seems correct.
- Hendrik
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