From cfbaeb311d906099bd9b8fbf0fa38cdb1b08f23e Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 20 Jun 2011 20:13:26 +0200
Subject: [PATCH] ffmpeg: print warning if encoding would duplicate massive
amounts of frames
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
ffmpeg.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/ffmpeg.c b/ffmpeg.c
index 0b1b1bee8db..dcb49d0fce8 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -2326,6 +2326,11 @@ static int transcode(AVFormatContext **output_files,
ost->frame_rate = ost->enc->supported_framerates[idx];
}
codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
+ if( av_q2d(codec->time_base) < 0.001 && video_sync_method
+ && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
+ av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
+ "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
+ }
#if CONFIG_AVFILTER
if (configure_video_filters(ist, ost)) {
--
GitLab