From 38aba7699a1faa5479000815b9028d2c917d9e50 Mon Sep 17 00:00:00 2001
From: michael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Thu, 6 Feb 2003 18:03:11 +0000
Subject: use fraction for time_base

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9298 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 DOCS/tech/mpcf.txt | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/DOCS/tech/mpcf.txt b/DOCS/tech/mpcf.txt
index ec1d6ae7d4..c3a6b25ad8 100644
--- a/DOCS/tech/mpcf.txt
+++ b/DOCS/tech/mpcf.txt
@@ -85,7 +85,8 @@ stream_header:
 	fourcc					v
 	average_bitrate				v
 	language_code				v
-	time_base				v
+	time_base_nom				v
+	time_base_denom				v
 	lsb_timestamp_length			v
 	fixed_fps				u(1)
 	codec_specific_header_flag		u(1)
@@ -191,10 +192,17 @@ language_code
 	something like 'u'<<24 + 's'<<16 + 'e'<<8 + 'n' (US english), can be 0
 	if unknown
 
-time_base
+time_base_nom / time_base_denom = time_base
 	the number of timer ticks per second, this MUST be equal to the fps
 	if the fixed_fps is 1
-	MUST be < 2^15
+	time_base_denom MUST not be 0
+	time_base_nom and time_base_denom MUST be relative prime
+	time_base_nom MUST be < 2^15
+	examples:
+        	fps	time_base_nom	time_base_denom
+		30	30		1
+		29.97	30000		1001
+		23.976	24000		1001
 
 lsb_timestamp_length
 	length in bits of the lsb_timestamp
-- 
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