@@ -172,8 +172,15 @@ Allow the caller to manually choose when to cut fragments, by

 calling @code{av_write_frame(ctx, NULL)} to write a fragment with

 the packets written so far. (This is only useful with other

 applications integrating libavformat, not from @command{avconv}.)

+@item -min_frag_duration @var{duration}

+Don't create fragments that are shorter than @var{duration} microseconds long.

 @end table

+If more than one condition is specified, fragments are cut when

+one of the specified conditions is fulfilled. The exception to this is

+@code{-min_frag_duration}, which has to be fulfilled for any of the other

+conditions to apply.

+

 Additionally, the way the output file is written can be adjusted

 through a few other options:

@@ -56,6 +56,7 @@ static const AVOption options[] = {

     { "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},

     { "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},

     { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},

+    { "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},

     { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},

     { "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},

     { NULL },

@@ -2831,21 +2832,25 @@ static int mov_write_packet_internal(AVFormatContext *s, AVPacket *pkt)

     unsigned int samples_in_chunk = 0;

     int size= pkt->size;

     uint8_t *reformatted_data = NULL;

+    int64_t frag_duration = 0;

     if (!s->pb->seekable && !(mov->flags & FF_MOV_FLAG_EMPTY_MOOV))

         return 0; /* Can't handle that */

     if (!size) return 0; /* Discard 0 sized packets */

-    if ((mov->max_fragment_duration && trk->entry &&

-         av_rescale_q(pkt->dts - trk->cluster[0].dts,

-                      s->streams[pkt->stream_index]->time_base,

-                      AV_TIME_BASE_Q) >= mov->max_fragment_duration) ||

+    if (trk->entry)

+        frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,

+                                     s->streams[pkt->stream_index]->time_base,

+                                     AV_TIME_BASE_Q);

+    if ((mov->max_fragment_duration &&

+         frag_duration >= mov->max_fragment_duration) ||

          (mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||

          (mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&

           enc->codec_type == AVMEDIA_TYPE_VIDEO &&

           trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {

-        mov_flush_fragment(s);

+        if (frag_duration >= mov->min_fragment_duration)

+            mov_flush_fragment(s);

     }

     if (mov->flags & FF_MOV_FLAG_FRAGMENT) {

@@ -149,6 +149,7 @@ typedef struct MOVMuxContext {

     int fragments;

     int max_fragment_duration;

+    int min_fragment_duration;

     int max_fragment_size;

     int ism_lookahead;

     AVIOContext *mdat_buf;