I hope I didn't screw it up too much... It's mostly a shameless
copypaste from libavformat.c/img2enc.c, but it does the trick.
Did some quick testing recording my webcam to multiple segments and it
looks good.
Happy new year.
--
Pedro Emílio Machado de Brito
Ciência da Computação 2012 - Unicamp
Coordenador Financeiro - Centro Acadêmico da Computação (CACo)
From 05695794f0138310d9b76f6afc2c05733e046a70 Mon Sep 17 00:00:00 2001
From: "Pedro E. M. Brito" <pedroembr...@gmail.com>
Date: Sun, 28 Dec 2014 05:35:34 -0200
Subject: [PATCH] libavformat/segment.c: Add strftime expansion for segment
filename templates
Allows expansion of the filename template with strftime() with the option
-strftime 1 (disabled by default). This allows segments to be named by time of
creation, adding some flexibility.
Fixes Ticket 4104 (add strftime to segment muxer)
Signed-off-by: Pedro E. M. Brito <pedroembr...@gmail.com>
---
libavformat/segment.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/libavformat/segment.c b/libavformat/segment.c
index 56ffcdc..97a0db2 100644
--- a/libavformat/segment.c
+++ b/libavformat/segment.c
@@ -90,6 +90,7 @@ typedef struct {
AVIOContext *list_pb; ///< list file put-byte context
char *time_str; ///< segment duration specification string
int64_t time; ///< segment duration
+ int use_strftime; ///< flag to expand filename with strftime
char *times_str; ///< segment times specification string
int64_t *times; ///< list of segment interval specification
@@ -179,8 +180,17 @@ static int set_segment_filename(AVFormatContext *s)
if (seg->segment_idx_wrap)
seg->segment_idx %= seg->segment_idx_wrap;
- if (av_get_frame_filename(oc->filename, sizeof(oc->filename),
- s->filename, seg->segment_idx) < 0) {
+ if (seg->use_strftime) {
+ time_t now0;
+ struct tm *tm, tmpbuf;
+ time(&now0);
+ tm = localtime_r(&now0, &tmpbuf);
+ if (!strftime(oc->filename, sizeof(oc->filename), s->filename, tm)) {
+ av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
+ return AVERROR(EINVAL);
+ }
+ } else if (av_get_frame_filename(oc->filename, sizeof(oc->filename),
+ s->filename, seg->segment_idx) < 0) {
av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", s->filename);
return AVERROR(EINVAL);
}
@@ -876,6 +886,7 @@ static const AVOption options[] = {
{ "segment_list_entry_prefix", "set base url prefix for segments", OFFSET(entry_prefix), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "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_INT, {.i64 = 0 }, 0, 1, E },
{ "individual_header_trailer", "write header/trailer to each segment", OFFSET(individual_header_trailer), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, E },
{ "write_header_trailer", "write a header to the first segment and a trailer to the last one", OFFSET(write_header_trailer), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, E },
--
2.2.1
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