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movenc: support spliting fragments based on bytesize instead of duration. 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-12-06 16:21:10 +01:00
parent cf8ec019ab
commit 15130b94fc
2 changed files with 7 additions and 2 deletions
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8
libavformat/movenc.c
View File

@ -45,6 +45,7 @@ static const AVOption options[] = {
{ "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.dbl = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.dbl = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "moov_size", "maximum moov size so it can be placed at the begin", offsetof(MOVMuxContext, reserved_moov_size), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },
{ "frag_size", "maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },
{ "frag_duration", "maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },
FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
{ NULL },
@ -2182,6 +2183,7 @@ static int flush_cluster_buffer(AVFormatContext *s){
}
updateSize(s->pb, mov->mdat_pos);
}
mov->mdat_size = 0;
for (i=0; i<mov->nb_streams; i++) {
MOVTrack *track= &mov->tracks[i];
track->cluster_write_index= track->entry;
@ -2205,7 +2207,9 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
if (!size) return 0; /* Discard 0 sized packets */
if (mov->fragments && trk->entry > trk->cluster_write_index &&
av_rescale_q(pkt->dts - trk->cluster[ trk->cluster_write_index ].dts, st->time_base, AV_TIME_BASE_Q) >= mov->max_fragment_duration){
( mov->max_fragment_duration && av_rescale_q(pkt->dts - trk->cluster[ trk->cluster_write_index ].dts, st->time_base, AV_TIME_BASE_Q) >= mov->max_fragment_duration
|| mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size)
){
flush_cluster_buffer(s);
}
@ -2369,7 +2373,7 @@ static int mov_write_header(AVFormatContext *s)
/* Default mode == MP4 */
mov->mode = MODE_MP4;
if(mov->max_fragment_duration){
if(mov->max_fragment_duration || mov->max_fragment_size){
mov->fragments= 1;
}

1
libavformat/movenc.h
View File

@ -122,6 +122,7 @@ typedef struct MOVMuxContext {
int reserved_moov_size;
int64_t reserved_moov_pos;
int max_fragment_duration;
int max_fragment_size;
} MOVMuxContext;
#define FF_MOV_FLAG_RTP_HINT 1