[FFmpeg-devel] [PATCH 2/5] lavc/libopenh264enc: use framerate if available

[Jun Zhao]

From: Jun Zhao <barryjzhao at tencent.com>

Respecting the framerate in the libopenh264enc codec context.

Both the libx264 and libx264 encoders already contain similar logic
to first check the framerate before falling back to the timebase.

Signed-off-by: Jun Zhao <barryjzhao at tencent.com>
---
 libavcodec/libopenh264enc.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/libavcodec/libopenh264enc.c b/libavcodec/libopenh264enc.c
index f63aa52..cf48566 100644
--- a/libavcodec/libopenh264enc.c
+++ b/libavcodec/libopenh264enc.c
@@ -156,7 +156,16 @@ static av_cold int svc_encode_init(AVCodecContext *avctx)
 
     (*s->encoder)->GetDefaultParams(s->encoder, &param);
 
-    param.fMaxFrameRate              = 1/av_q2d(avctx->time_base);
+    if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
+        param.fMaxFrameRate = av_q2d(avctx->framerate);
+    } else {
+        if (avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "Could not set framerate for libopenh264enc: integer overflow\n");
+            return AVERROR(EINVAL);
+        }
+        param.fMaxFrameRate = 1.0 / av_q2d(avctx->time_base) / FFMAX(avctx->ticks_per_frame, 1);
+    }
     param.iPicWidth                  = avctx->width;
     param.iPicHeight                 = avctx->height;
     param.iTargetBitrate             = avctx->bit_rate > 0 ? avctx->bit_rate : TARGET_BITRATE_DEFAULT;
-- 
2.7.4