ffmpeg: pass output stream duration as a hint to the muxer

Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 3 insertions, 0 deletions

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index af257e43c4..ebb0e05c04 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -930,6 +930,9 @@ typedef struct AVStream {
      * Decoding: duration of the stream, in stream time base.
      * If a source file does not specify a duration, but does specify
      * a bitrate, this value will be estimated from bitrate and file size.
+     *
+     * Encoding: May be set by the caller before avformat_write_header() to
+     * provide a hint to the muxer about the estimated duration.
      */
     int64_t duration;