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movenc: Add a min_frag_duration option
The other fragmentation options (frag_duration, frag_size and frag_keyframe) are combined with OR, cutting fragments at the first of the conditions being fulfilled. Signed-off-by: Martin Storsjö <martin@martin.st>
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@ -172,8 +172,15 @@ Allow the caller to manually choose when to cut fragments, by
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calling @code{av_write_frame(ctx, NULL)} to write a fragment with
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the packets written so far. (This is only useful with other
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applications integrating libavformat, not from @command{avconv}.)
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@item -min_frag_duration @var{duration}
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Don't create fragments that are shorter than @var{duration} microseconds long.
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@end table
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If more than one condition is specified, fragments are cut when
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one of the specified conditions is fulfilled. The exception to this is
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@code{-min_frag_duration}, which has to be fulfilled for any of the other
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conditions to apply.
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Additionally, the way the output file is written can be adjusted
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through a few other options:
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@ -56,6 +56,7 @@ static const AVOption options[] = {
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{ "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.dbl = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
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{ "iods_video_profile", "iods video profile atom.", offsetof(MOVMuxContext, iods_video_profile), AV_OPT_TYPE_INT, {.dbl = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
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{ "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
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{ "min_frag_duration", "Minimum fragment duration", offsetof(MOVMuxContext, min_fragment_duration), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
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{ "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
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{ "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
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{ NULL },
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@ -2831,21 +2832,25 @@ static int mov_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
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unsigned int samples_in_chunk = 0;
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int size= pkt->size;
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uint8_t *reformatted_data = NULL;
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int64_t frag_duration = 0;
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if (!s->pb->seekable && !(mov->flags & FF_MOV_FLAG_EMPTY_MOOV))
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return 0; /* Can't handle that */
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if (!size) return 0; /* Discard 0 sized packets */
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if ((mov->max_fragment_duration && trk->entry &&
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av_rescale_q(pkt->dts - trk->cluster[0].dts,
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s->streams[pkt->stream_index]->time_base,
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AV_TIME_BASE_Q) >= mov->max_fragment_duration) ||
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if (trk->entry)
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frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
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s->streams[pkt->stream_index]->time_base,
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AV_TIME_BASE_Q);
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if ((mov->max_fragment_duration &&
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frag_duration >= mov->max_fragment_duration) ||
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(mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||
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(mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&
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enc->codec_type == AVMEDIA_TYPE_VIDEO &&
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trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
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mov_flush_fragment(s);
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if (frag_duration >= mov->min_fragment_duration)
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mov_flush_fragment(s);
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}
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if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
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@ -149,6 +149,7 @@ typedef struct MOVMuxContext {
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int fragments;
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int max_fragment_duration;
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int min_fragment_duration;
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int max_fragment_size;
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int ism_lookahead;
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AVIOContext *mdat_buf;
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