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avformat/rtsp: set AVFMTCTX_UNSEEKABLE flag

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for live RTP streams. Some external applications, such as Qt Multimedia,
depend on this flag being set correctly.

Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
This commit is contained in:
Kaarle Ritvanen
2025-04-29 14:35:00 +03:00
committed by michaelni
parent dd977adcfe
commit 0fdb5829e3
1 changed files with 7 additions and 2 deletions
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9
libavformat/rtsp.c
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@@ -663,8 +663,8 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
rtsp_parse_range_npt(p, &start, &end); rtsp_parse_range_npt(p, &start, &end);
s->start_time = start; s->start_time = start;
/* AV_NOPTS_VALUE means live broadcast (and can't seek) */ /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
s->duration = (end == AV_NOPTS_VALUE) ? if (end != AV_NOPTS_VALUE)
AV_NOPTS_VALUE : end - start; s->duration = end - start;
} else if (av_strstart(p, "lang:", &p)) { } else if (av_strstart(p, "lang:", &p)) {
if (s->nb_streams > 0) { if (s->nb_streams > 0) {
get_word(buf1, sizeof(buf1), &p); get_word(buf1, sizeof(buf1), &p);
@@ -754,6 +754,8 @@ int ff_sdp_parse(AVFormatContext *s, const char *content)
char buf[SDP_MAX_SIZE], *q; char buf[SDP_MAX_SIZE], *q;
SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state; SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
s->duration = AV_NOPTS_VALUE;
p = content; p = content;
for (;;) { for (;;) {
p += strspn(p, SPACE_CHARS); p += strspn(p, SPACE_CHARS);
@@ -787,6 +789,9 @@ int ff_sdp_parse(AVFormatContext *s, const char *content)
av_freep(&s1->default_exclude_source_addrs[i]); av_freep(&s1->default_exclude_source_addrs[i]);
av_freep(&s1->default_exclude_source_addrs); av_freep(&s1->default_exclude_source_addrs);
if (s->duration == AV_NOPTS_VALUE)
s->ctx_flags |= AVFMTCTX_UNSEEKABLE;
return 0; return 0;
} }
#endif /* CONFIG_RTPDEC */ #endif /* CONFIG_RTPDEC */