diff options
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/mpeg12.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c index 713b42d18f..ba352d5c4c 100644 --- a/libavcodec/mpeg12.c +++ b/libavcodec/mpeg12.c @@ -392,13 +392,19 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number) // RAL: Forward f_code also needed for B frames if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) { put_bits(&s->pb, 1, 0); /* half pel coordinates */ - put_bits(&s->pb, 3, s->f_code); /* forward_f_code */ + if(s->codec_id == CODEC_ID_MPEG1VIDEO) + put_bits(&s->pb, 3, s->f_code); /* forward_f_code */ + else + put_bits(&s->pb, 3, 7); /* forward_f_code */ } // RAL: Backward f_code necessary for B frames if (s->pict_type == B_TYPE) { put_bits(&s->pb, 1, 0); /* half pel coordinates */ - put_bits(&s->pb, 3, s->b_code); /* backward_f_code */ + if(s->codec_id == CODEC_ID_MPEG1VIDEO) + put_bits(&s->pb, 3, s->b_code); /* backward_f_code */ + else + put_bits(&s->pb, 3, 7); /* backward_f_code */ } put_bits(&s->pb, 1, 0); /* extra bit picture */ @@ -406,10 +412,18 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number) if(s->codec_id == CODEC_ID_MPEG2VIDEO){ put_header(s, EXT_START_CODE); put_bits(&s->pb, 4, 8); //pic ext - put_bits(&s->pb, 4, s->f_code); - put_bits(&s->pb, 4, s->f_code); - put_bits(&s->pb, 4, s->b_code); - put_bits(&s->pb, 4, s->b_code); + if (s->pict_type == P_TYPE || s->pict_type == B_TYPE) { + put_bits(&s->pb, 4, s->f_code); + put_bits(&s->pb, 4, s->f_code); + }else{ + put_bits(&s->pb, 8, 255); + } + if (s->pict_type == B_TYPE) { + put_bits(&s->pb, 4, s->b_code); + put_bits(&s->pb, 4, s->b_code); + }else{ + put_bits(&s->pb, 8, 255); + } put_bits(&s->pb, 2, s->intra_dc_precision); put_bits(&s->pb, 2, s->picture_structure= PICT_FRAME); put_bits(&s->pb, 1, s->top_field_first); |