Because the protocol name is cache, but the class name is Cache.
for example:
ffmpeg -protocols will show:
Supported file protocols:
Input:
async
bluray
cache
concat
crypto
data
ffrtmphttp
file
ftp
gopher
hls
http
httpproxy
https
mmsh
mmst
pipe
rtmp
rtmps
rtmpt
rtmpts
rtp
srtp
subfile
tcp
tls
udp
udplite
unix
Output:
crypto
ffrtmphttp
file
ftp
gopher
http
httpproxy
https
icecast
md5
pipe
prompeg
rtmp
rtmps
rtmpt
rtmpts
rtp
srtp
tee
tcp
tls
udp
udplite
unix
But i cannot find the cache protocol in help message
liuqideMacBook-Pro:build liuqi$ ffmpeg --help full | grep cache
ffmpeg version N-95812-gd73f062706 Copyright (c) 2000-2019 the FFmpeg developers
built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
configuration: --enable-fontconfig --enable-gpl --enable-libass
--enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libspeex
--enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-version3
--enable-nonfree --enable-videotoolbox --enable-libxml2 --samples=fate-suite/
--enable-libopencv
libavutil 56. 36.100 / 56. 36.100
libavcodec 58. 62.100 / 58. 62.100
libavformat 58. 35.100 / 58. 35.100
libavdevice 58. 9.101 / 58. 9.101
libavfilter 7. 66.100 / 7. 66.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
-hls_allow_cache <int> E......... explicitly set whether the client
MAY (1) or MUST NOT (0) cache media segments (from INT_MIN to INT_MAX) (default
-1)
-segment_list_flags <flags> E......... set flags affecting segment list
generation (default cache)
cache E......... allow list caching
-segment_list_flags <flags> E......... set flags affecting segment list
generation (default cache)
cache E......... allow list caching
frames <int> ..FV...... set number of frames in cache (from
2 to 512) (default 30)
liuqideMacBook-Pro:build liuqi$
after patch:
bogon:dash liuqi$ ./ffmpeg --help full | grep cache
ffmpeg version N-95942-gece617e849 Copyright (c) 2000-2019 the FFmpeg developers
built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
configuration: --enable-fontconfig --enable-gpl --enable-libass
--enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libspeex
--enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-version3
--enable-nonfree --enable-videotoolbox --enable-libxml2 --samples=fate-suite/
--enable-libopencv --enable-libopus
libavutil 56. 36.101 / 56. 36.101
libavcodec 58. 64.101 / 58. 64.101
libavformat 58. 35.100 / 58. 35.100
libavdevice 58. 9.101 / 58. 9.101
libavfilter 7. 67.100 / 7. 67.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
cache AVOptions:
-hls_allow_cache <int> E......... explicitly set whether the client
MAY (1) or MUST NOT (0) cache media segments (from INT_MIN to INT_MAX) (default
-1)
-segment_list_flags <flags> E......... set flags affecting segment list
generation (default cache)
cache E......... allow list caching
-segment_list_flags <flags> E......... set flags affecting segment list
generation (default cache)
cache E......... allow list caching
frames <int> ..FV...... set number of frames in cache (from
2 to 512) (default 30)
bogon:dash liuqi$
can find the cache AVOptions after patch.
Signed-off-by: Steven Liu <l...@chinaffmpeg.org>
---
libavformat/cache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/cache.c b/libavformat/cache.c
index 3425be9350..09e5d5f832 100644
--- a/libavformat/cache.c
+++ b/libavformat/cache.c
@@ -326,7 +326,7 @@ static const AVOption options[] = {
};
static const AVClass cache_context_class = {
- .class_name = "Cache",
+ .class_name = "cache",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
--
2.15.1
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