This enabled automatically creating directories for strftime-formatted
segment names.

Signed-off-by: George-Cristian Jiglau <geo...@mux.ro>
---
 doc/muxers.texi       | 11 +++++++++++
 libavformat/segment.c | 18 +++++++++++++++++-
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/doc/muxers.texi b/doc/muxers.texi
index 4edbb22b00..77792379d9 100644
--- a/doc/muxers.texi
+++ b/doc/muxers.texi
@@ -2445,6 +2445,17 @@ segments to write. If this is selected, the output segment name must
 contain a @code{strftime} function template. Default value is
 @code{0}.
 +@item strftime_mkdir @var{1|0|
+Used together with -strftime, it will create all subdirectories of the
+expanded segment name. Default value is @code{0}.
+
+@example
+ffmpeg -i in.nut -strftime 1 -strftime_mkdir 1 -hls_segment_filename '%Y/%m/%d/file-%Y%m%d-%s.ts' out.m3u8
+@end example
+This example will create a directory hierarchy 2016/02/15 (if any of them do not exist), and then
+produce the playlist, @file{out.m3u8}, and segment files:
+@file{2016/02/15/file-20160215-1455569023.ts}, @file{2016/02/15/file-20160215-1455569024.ts}, etc.
+
 @item break_non_keyframes @var{1|0}
 If enabled, allow segments to start on frames other than keyframes. This
 improves behavior on some players when the time between keyframes is
diff --git a/libavformat/segment.c b/libavformat/segment.c
index c904e20708..ef95b34beb 100644
--- a/libavformat/segment.c
+++ b/libavformat/segment.c
@@ -93,9 +93,11 @@ typedef struct SegmentContext {
     int list_type;         ///< set the list type
     AVIOContext *list_pb;  ///< list file put-byte context
     int64_t time;          ///< segment duration
-    int use_strftime;      ///< flag to expand filename with strftime
     int increment_tc;      ///< flag to increment timecode if found
 +    int use_strftime;       ///< flag to expand filename with strftime
+    int use_strftime_mkdir; ///< flag to mkdir dirname in strftime filename
+
     char *times_str;       ///< segment times specification string
     int64_t *times;        ///< list of segment interval specification
     int nb_times;          ///< number of elments in the times array
@@ -203,6 +205,19 @@ static int set_segment_filename(AVFormatContext *s)
av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
             return AVERROR(EINVAL);
         }
+        if (seg->use_strftime_mkdir) {
+            const char *dir;
+            char *fn_copy = av_strdup(oc->url);
+            if (!fn_copy)
+                return AVERROR(ENOMEM);
+            dir = av_dirname(fn_copy);
+            if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
+ av_log(oc, AV_LOG_ERROR, "Could not create directory %s with strftime_mkdir\n", dir);
+                av_freep(&fn_copy);
+                return AVERROR(errno);
+            }
+            av_freep(&fn_copy);
+        }
     } else if (av_get_frame_filename(buf, sizeof(buf),
                                      s->url, seg->segment_idx) < 0) {
av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", s->url);
@@ -1038,6 +1053,7 @@ static const AVOption options[] = {
{ "segment_start_number", "set the sequence number of the first segment", OFFSET(segment_idx), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, { "segment_wrap_number", "set the number of wrap before the first segment", OFFSET(segment_idx_wrap_nb), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, { "strftime", "set filename expansion with strftime at segment creation", OFFSET(use_strftime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, + { "strftime_mkdir", "create directory components in strftime-generated filename", OFFSET(use_strftime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, { "increment_tc", "increment timecode between each segment", OFFSET(increment_tc), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, { "break_non_keyframes", "allow breaking segments on non-keyframes", OFFSET(break_non_keyframes), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E },
 -- 2.36.2

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