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[FFmpeg-devel,v2,1/7] dashenc: fix bitrate estimation with correct scaling

Message ID 20171029151036.16579-1-pegro@friiks.de
State Accepted
Commit 3dca4887aef4f1c2ab2f94a02342b3f50913522c
Headers show

Commit Message

Peter Große Oct. 29, 2017, 3:10 p.m. UTC 
From: Anton Schubert <ischluff@mailbox.org>

Signed-off-by: Anton Schubert <ischluff@mailbox.org>
Signed-off-by: Peter Große <pegro@friiks.de>
---
v2: Fixed double rescaling.

 libavformat/dashenc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Michael Niedermayer Oct. 29, 2017, 5:05 p.m. UTC | #1 
On Sun, Oct 29, 2017 at 04:10:34PM +0100, Peter Große wrote:
> From: Anton Schubert <ischluff@mailbox.org>
> 
> Signed-off-by: Anton Schubert <ischluff@mailbox.org>
> Signed-off-by: Peter Große <pegro@friiks.de>
> ---
> v2: Fixed double rescaling.
> 
>  libavformat/dashenc.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

will apply

thx

[...]
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Patch

diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c
index 04b0fd99e6..e25a660fbe 100644
--- a/libavformat/dashenc.c
+++ b/libavformat/dashenc.c
@@ -947,6 +947,7 @@  static int dash_flush(AVFormatContext *s, int final, int stream)
 
     for (i = 0; i < s->nb_streams; i++) {
         OutputStream *os = &c->streams[i];
+        AVStream *st = s->streams[i];
         char filename[1024] = "", full_path[1024], temp_path[1024];
         int range_length, index_length = 0;
 
@@ -1001,7 +1002,7 @@  static int dash_flush(AVFormatContext *s, int final, int stream)
 
         if (!os->bit_rate) {
             // calculate average bitrate of first segment
-            int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / (os->max_pts - os->start_pts);
+            int64_t bitrate = (int64_t) range_length * 8 / ((os->max_pts - os->start_pts) * av_q2d(st->time_base));
             if (bitrate >= 0) {
                 os->bit_rate = bitrate;
                 snprintf(os->bandwidth_str, sizeof(os->bandwidth_str),