ffmpeg: rework checks for the -t option.

This commit is based on libav's implementation and
makes sure to compare output timestamps together.
It also reduces the differences with avconv.

The changes to the test reference files are caused
by an additional packet at the end, the timestamp
of the frame encoded by this packet is always
strictly below the limit stated by the -t option.

ffmpeg.c

@@ -1570,10 +1570,10 @@ static void do_audio_out(AVFormatContext *s, OutputStream *ost,
     av_init_packet(&pkt);
     pkt.data = NULL;
     pkt.size = 0;
-#if 0
+
     if (!check_recording_time(ost))
         return;
-#endif
+
     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
         frame->pts = ost->sync_opts;
     ost->sync_opts = frame->pts + frame->nb_samples;
@@ -1681,6 +1681,8 @@ static void do_subtitle_out(AVFormatContext *s,
 
     for (i = 0; i < nb; i++) {
         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
+        if (!check_recording_time(ost))
+            return;
 
         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
         // start_display_time is required to be 0
@@ -1787,6 +1789,9 @@ duplicate_frame:
 
     in_picture->pts = ost->sync_opts;
 
+    if (!check_recording_time(ost))
+        return;
+
     if (s->oformat->flags & AVFMT_RAWPICTURE &&
         enc->codec->id == CODEC_ID_RAWVIDEO) {
         /* raw pictures are written as AVPicture structure to
@@ -2242,13 +2247,6 @@ static int check_output_constraints(InputStream *ist, OutputStream *ost)
     if (of->start_time && ist->pts < of->start_time)
         return 0;
 
-    if (of->recording_time != INT64_MAX &&
-        av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
-                      (AVRational){ 1, 1000000 }) >= 0) {
-        ost->is_past_recording_time = 1;
-        return 0;
-    }
-
     return 1;
 }
 
@@ -2265,6 +2263,12 @@ static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *p
         !ost->copy_initial_nonkeyframes)
         return;
 
+    if (of->recording_time != INT64_MAX &&
+        ist->pts >= of->recording_time + of->start_time) {
+        ost->is_past_recording_time = 1;
+        return;
+    }
+
     /* force the input stream PTS */
     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
         audio_size += pkt->size;

tests/ref/fate/bethsoft-vid

@@ -141,4 +141,3 @@
 1,      54760,      54760,      537,     1074, 0x142ce7ba
 0,         69,         69,        1,   192000, 0x159313a8
 1,      55297,      55297,      925,     1850, 0x7ff682f7
-0,         70,         70,        1,   192000, 0x8e685d68

tests/ref/fate/idroq-video-encode

-736168b00f6b79f472a57bf47b587c8c
+2be5ade557acab688d58f1c5ec0773f4

tests/ref/lavf/dv_fmt

 6f9cfff48f536fa727696f2f9fb3ac08 *./tests/data/lavf/lavf.dv
 3600000 ./tests/data/lavf/lavf.dv
 ./tests/data/lavf/lavf.dv CRC=0x5ce4e5e4
-cc33ae4f9e6828914dea0f09d1241b7e *./tests/data/lavf/lavf.dv
-3480000 ./tests/data/lavf/lavf.dv
-./tests/data/lavf/lavf.dv CRC=0x8d5e9e8f
+2e8989478f05f6d4eaf1921fdfac4799 *./tests/data/lavf/lavf.dv
+3600000 ./tests/data/lavf/lavf.dv
+./tests/data/lavf/lavf.dv CRC=0x747caf33
 87d3b20f656235671383a7eaa2f66330 *./tests/data/lavf/lavf.dv
 3600000 ./tests/data/lavf/lavf.dv
 ./tests/data/lavf/lavf.dv CRC=0x0e868a82

tests/ref/lavf/gxf

 befc1a39c37a4ecd9264942a3e34b3f6 *./tests/data/lavf/lavf.gxf
 796392 ./tests/data/lavf/lavf.gxf
 ./tests/data/lavf/lavf.gxf CRC=0x102918fd
-267d2b2b6e357209d76c366302cf35c3 *./tests/data/lavf/lavf.gxf
-794572 ./tests/data/lavf/lavf.gxf
-./tests/data/lavf/lavf.gxf CRC=0xab47d02d
+474c4dd8b124790b395b435ac95a6d14 *./tests/data/lavf/lavf.gxf
+816772 ./tests/data/lavf/lavf.gxf
+./tests/data/lavf/lavf.gxf CRC=0xc7d66595
 0a1a37fa79b62435545271b4e8e882f5 *./tests/data/lavf/lavf.gxf
 796392 ./tests/data/lavf/lavf.gxf
 ./tests/data/lavf/lavf.gxf CRC=0x3b1a8e91

tests/ref/lavf/ismv

 eb116b60befadfd5c9118635d81c5a6e *./tests/data/lavf/lavf.ismv
 312271 ./tests/data/lavf/lavf.ismv
 ./tests/data/lavf/lavf.ismv CRC=0xbcc963fc
-90db70a6f33cf22db9ce242087b5870b *./tests/data/lavf/lavf.ismv
-321545 ./tests/data/lavf/lavf.ismv
-./tests/data/lavf/lavf.ismv CRC=0x3998478f
+456b04d243a2c45f820ee3cd6ed3ae3b *./tests/data/lavf/lavf.ismv
+331249 ./tests/data/lavf/lavf.ismv
+./tests/data/lavf/lavf.ismv CRC=0x5c2fddcd
 eb116b60befadfd5c9118635d81c5a6e *./tests/data/lavf/lavf.ismv
 312271 ./tests/data/lavf/lavf.ismv
 ./tests/data/lavf/lavf.ismv CRC=0xbcc963fc

tests/ref/lavf/mov

@@ -4,9 +4,9 @@
 21b992f6a677f971dfd685cc055a2b0a *./tests/data/lavf/lavf.mov
 358463 ./tests/data/lavf/lavf.mov
 ./tests/data/lavf/lavf.mov CRC=0x2f6a9b26
-f1e80a52983775ea27dda0590b46e17a *./tests/data/lavf/lavf.mov
-367893 ./tests/data/lavf/lavf.mov
-./tests/data/lavf/lavf.mov CRC=0xab307eb9
+f607c5ac4f2668149c064d75a4ddd0dd *./tests/data/lavf/lavf.mov
+377609 ./tests/data/lavf/lavf.mov
+./tests/data/lavf/lavf.mov CRC=0x4e671506
 305a68397e3cdb505704841fedcdc352 *./tests/data/lavf/lavf.mov
 357845 ./tests/data/lavf/lavf.mov
 ./tests/data/lavf/lavf.mov CRC=0x2f6a9b26

tests/ref/lavf/mpg

 8d47f1d92230442d475477ed4ec0c778 *./tests/data/lavf/lavf.mpg
 372736 ./tests/data/lavf/lavf.mpg
 ./tests/data/lavf/lavf.mpg CRC=0x88f58ba1
-ac56ba7cec2d2be0a1ca17473e5b152c *./tests/data/lavf/lavf.mpg
-387072 ./tests/data/lavf/lavf.mpg
-./tests/data/lavf/lavf.mpg CRC=0xe8637d83
+a0510a6f6ad056882827a2d2a92fd537 *./tests/data/lavf/lavf.mpg
+399360 ./tests/data/lavf/lavf.mpg
+./tests/data/lavf/lavf.mpg CRC=0x93df648f
 af32acbc73ee486b05a37d53e516d5e7 *./tests/data/lavf/lavf.mpg
 372736 ./tests/data/lavf/lavf.mpg
 ./tests/data/lavf/lavf.mpg CRC=0x88f58ba1

tests/ref/lavf/mxf

 4cc269e1d2066fac03a3d7466f011c8e *./tests/data/lavf/lavf.mxf
 525881 ./tests/data/lavf/lavf.mxf
 ./tests/data/lavf/lavf.mxf CRC=0x4ace0849
-87eb6e0e51d31c8ffa414d02672edfa0 *./tests/data/lavf/lavf.mxf
-537657 ./tests/data/lavf/lavf.mxf
-./tests/data/lavf/lavf.mxf CRC=0x9b928d6b
+88ab06201db1953329bfb4aa04a4fe05 *./tests/data/lavf/lavf.mxf
+553529 ./tests/data/lavf/lavf.mxf
+./tests/data/lavf/lavf.mxf CRC=0x86fddf92
 52c5b74ecfdc48bd77d79a6bbe62d2de *./tests/data/lavf/lavf.mxf
 525881 ./tests/data/lavf/lavf.mxf
 ./tests/data/lavf/lavf.mxf CRC=0x4ace0849

tests/ref/lavf/ogg

-810fbac66c4c65fd155b3c7f27ce69c5 *./tests/data/lavf/lavf.ogg
-12610 ./tests/data/lavf/lavf.ogg
-./tests/data/lavf/lavf.ogg CRC=0xf651632a
+ce1734741fa50c6c85f9cc8f410a720c *./tests/data/lavf/lavf.ogg
+13985 ./tests/data/lavf/lavf.ogg
+./tests/data/lavf/lavf.ogg CRC=0x37a143ea