PR #24216 opened by adorn
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24216
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24216.patch
RFC 7233 allows an unknown complete-length ("bytes A-B/*"). strtoull("*")
returns 0, which clobbered a previously known filesize and made avio_size()
return 0 - breaking duration estimation over HTTP (e.g. N/A for CBR MP3 and
for WAV with a chunk after data).
Fixes #24210
# Summary of changes
Briefly describe what this PR does and why.
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>From fbb9f527221b181d8dd240fcce23c11c5264ac26 Mon Sep 17 00:00:00 2001
From: Andreas Menze <[email protected]>
Date: Thu, 20 Aug 2026 10:58:09 +0200
Subject: [PATCH] avformat/http: treat Content-Range "*" total as unknown, not
0
RFC 7233 allows an unknown complete-length ("bytes A-B/*"). strtoull("*")
returns 0, which clobbered a previously known filesize and made avio_size()
return 0 - breaking duration estimation over HTTP (e.g. N/A for CBR MP3 and
for WAV with a chunk after data).
Fixes #24210
---
libavformat/http.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/http.c b/libavformat/http.c
index 719d3c2ef5..756f09b1c9 100644
--- a/libavformat/http.c
+++ b/libavformat/http.c
@@ -928,7 +928,7 @@ static void parse_content_range(URLContext *h, const char
*p)
s->off = strtoull(p, NULL, 10);
if ((end = strchr(p, '-')) && strlen(end) > 0)
s->range_end = strtoull(end + 1, NULL, 10) + 1;
- if ((slash = strchr(p, '/')) && strlen(slash) > 0)
+ if ((slash = strchr(p, '/')) && strlen(slash) > 0 && slash[1] != '*')
s->filesize_from_content_range = strtoull(slash + 1, NULL, 10);
}
if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
--
2.52.0
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