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movenc: Indicate that negative timestamps are supported

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The mov/mp4 muxer has support for handling negative timestamps
via edit lists (which customarily is used for handling the 1-frame
delay due to B-frames as well).

Using the muxer's native way of handling it is better than using
the generic offsetting. The generic offsetting is a bit too
crude when e.g. the timebase of one track is 1/fps, where the
edit lists can handle it accurately.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-08-17 17:05:53 +01:00
parent c34a96a5dd
commit 0a14fefd68
1 changed files with 7 additions and 7 deletions
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14
libavformat/movenc.c
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@ -3265,7 +3265,7 @@ AVOutputFormat ff_mov_muxer = {
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){
ff_codec_movvideo_tags, ff_codec_movaudio_tags, 0
},
@ -3284,7 +3284,7 @@ AVOutputFormat ff_tgp_muxer = {
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_3gp_tags, 0 },
.priv_class = &tgp_muxer_class,
};
@ -3303,7 +3303,7 @@ AVOutputFormat ff_mp4_muxer = {
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
.priv_class = &mp4_muxer_class,
};
@ -3321,7 +3321,7 @@ AVOutputFormat ff_psp_muxer = {
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
.priv_class = &psp_muxer_class,
};
@ -3338,7 +3338,7 @@ AVOutputFormat ff_tg2_muxer = {
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_3gp_tags, 0 },
.priv_class = &tg2_muxer_class,
};
@ -3356,7 +3356,7 @@ AVOutputFormat ff_ipod_muxer = {
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ codec_ipod_tags, 0 },
.priv_class = &ipod_muxer_class,
};
@ -3374,7 +3374,7 @@ AVOutputFormat ff_ismv_muxer = {
.write_header = mov_write_header,
.write_packet = mov_write_packet,
.write_trailer = mov_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
.flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
.codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
.priv_class = &ismv_muxer_class,
};