ffmpeg: comment mpeg4 hack

See 3734c3ea51
10 years ago · c285937ccc
parent 81a91269a2
commit c285937ccc
1 changed files with 1 additions and 0 deletions
--- a/ffmpeg.c
+++ b/ffmpeg.c
@ -2847,6 +2847,7 @@ static int transcode_init(void)
                    int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
                    ost->frame_rate = ost->enc->supported_framerates[idx];
                }
+                // reduce frame rate for mpeg4 to be within the spec limits
                if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
                    av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
                              ost->frame_rate.num, ost->frame_rate.den, 65535);