allow insane gop sizes if the user doesnt care about playable streams (doesnt...

allow insane gop sizes if the user doesnt care about playable streams (doesnt want compliance to any standard)

Originally committed as revision 5351 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/mpegvideo.c

@@ -947,7 +947,7 @@ int MPV_encode_init(AVCodecContext *avctx)
     s->bit_rate = avctx->bit_rate;
     s->width = avctx->width;
     s->height = avctx->height;
-    if(avctx->gop_size > 600){
+    if(avctx->gop_size > 600 && avctx->strict_std_compliance>FF_COMPLIANCE_EXPERIMENTAL){
         av_log(avctx, AV_LOG_ERROR, "Warning keyframe interval too large! reducing it ...\n");
         avctx->gop_size=600;
     }