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| author | Stefano Sabatini <stefasab@gmail.com> | 2013-01-12 16:16:36 +0100 |
|---|---|---|
| committer | Stefano Sabatini <stefasab@gmail.com> | 2013-01-13 15:09:09 +0100 |
| commit | 98247e3368fb34eefa8fd4b3ec87e8a564d940bd (patch) | |
| tree | adb1153fbf6031f31266c00042b7b032afcdab7b | |
| parent | 78e27c44c3c2857a2ed24de551207013edfc42d2 (diff) | |
| download | ffmpeg-98247e3368fb34eefa8fd4b3ec87e8a564d940bd.tar.gz | |
lavf: clarify/extend documentation for AVFormatContext::analyzeduration
"analyzeduration" is not used to detect the input duration, but to
specify the max probe data duration. Fix option description and related
doc entry accordingly.
| -rw-r--r-- | doc/ffmpeg-formats.texi | 4 | ||||
| -rw-r--r-- | libavformat/options_table.h | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/doc/ffmpeg-formats.texi b/doc/ffmpeg-formats.texi index 03e4f30ac3..30cf415d14 100644 --- a/doc/ffmpeg-formats.texi +++ b/doc/ffmpeg-formats.texi @@ -77,7 +77,9 @@ Reduce the latency introduced by optional buffering @end table @item analyzeduration @var{integer} (@emph{input}) -Specify how many microseconds are analyzed to estimate duration. +Specify how many microseconds are analyzed to probe the input. A +higher value will allow to detect more accurate information, but will +increase latency. It defaults to 5,000,000 microseconds = 5 seconds. @item cryptokey @var{hexadecimal string} (@emph{input}) Set decryption key. diff --git a/libavformat/options_table.h b/libavformat/options_table.h index dbe37d7072..e78e5981f2 100644 --- a/libavformat/options_table.h +++ b/libavformat/options_table.h @@ -48,7 +48,7 @@ static const AVOption options[]={ {"keepside", "dont merge side data", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_KEEP_SIDE_DATA }, INT_MIN, INT_MAX, D, "fflags"}, {"latm", "enable RTP MP4A-LATM payload", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_MP4A_LATM }, INT_MIN, INT_MAX, E, "fflags"}, {"nobuffer", "reduce the latency introduced by optional buffering", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_NOBUFFER }, 0, INT_MAX, D, "fflags"}, -{"analyzeduration", "how many microseconds are analyzed to estimate duration", OFFSET(max_analyze_duration), AV_OPT_TYPE_INT, {.i64 = 5*AV_TIME_BASE }, 0, INT_MAX, D}, +{"analyzeduration", "specify how many microseconds are analyzed to probe the input", OFFSET(max_analyze_duration), AV_OPT_TYPE_INT, {.i64 = 5*AV_TIME_BASE }, 0, INT_MAX, D}, {"cryptokey", "decryption key", OFFSET(key), AV_OPT_TYPE_BINARY, {.dbl = 0}, 0, 0, D}, {"indexmem", "max memory used for timestamp index (per stream)", OFFSET(max_index_size), AV_OPT_TYPE_INT, {.i64 = 1<<20 }, 0, INT_MAX, D}, {"rtbufsize", "max memory used for buffering real-time frames", OFFSET(max_picture_buffer), AV_OPT_TYPE_INT, {.i64 = 3041280 }, 0, INT_MAX, D}, /* defaults to 1s of 15fps 352x288 YUYV422 video */ |