[FFmpeg-devel] [PATCH] lavf/mov.c: Parse upto 2 keyframes after the edit list end in mov_fix_index.
Sasi Inguva
isasi at google.com
Fri Nov 10 02:11:22 EET 2017
Partially fixes t/6699.
---
libavformat/mov.c | 32 +++++++++++++++++++-----------
tests/fate/mov.mak | 4 ++++
tests/ref/fate/mov-elst-ends-betn-b-and-i | 33 +++++++++++++++++++++++++++++++
3 files changed, 58 insertions(+), 11 deletions(-)
create mode 100644 tests/ref/fate/mov-elst-ends-betn-b-and-i
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 7954db6e47..436ae42cbb 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -3295,6 +3295,7 @@ static void mov_fix_index(MOVContext *mov, AVStream *st)
int packet_skip_samples = 0;
MOVIndexRange *current_index_range;
int i;
+ int found_keyframe_after_edit = 0;
if (!msc->elst_data || msc->elst_count <= 0 || nb_old <= 0) {
return;
@@ -3390,6 +3391,7 @@ static void mov_fix_index(MOVContext *mov, AVStream *st)
// Iterate over index and arrange it according to edit list
edit_list_start_encountered = 0;
+ found_keyframe_after_edit = 0;
for (; current < e_old_end; current++, index++) {
// check if frame outside edit list mark it for discard
frame_duration = (current + 1 < e_old_end) ?
@@ -3502,18 +3504,26 @@ static void mov_fix_index(MOVContext *mov, AVStream *st)
}
// Break when found first key frame after edit entry completion
- if (((curr_cts + frame_duration) >= (edit_list_duration + edit_list_media_time)) &&
+ if ((curr_cts + frame_duration >= (edit_list_duration + edit_list_media_time)) &&
((flags & AVINDEX_KEYFRAME) || ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)))) {
-
- if (ctts_data_old && ctts_sample_old != 0) {
- if (add_ctts_entry(&msc->ctts_data, &msc->ctts_count,
- &msc->ctts_allocated_size,
- ctts_sample_old - edit_list_start_ctts_sample,
- ctts_data_old[ctts_index_old].duration) == -1) {
- av_log(mov->fc, AV_LOG_ERROR, "Cannot add CTTS entry %"PRId64" - {%"PRId64", %d}\n",
- ctts_index_old, ctts_sample_old - edit_list_start_ctts_sample,
- ctts_data_old[ctts_index_old].duration);
- break;
+ if (ctts_data_old) {
+ // If we have CTTS and this is the the first keyframe after edit elist,
+ // wait for one more, because there might be trailing B-frames after this I-frame
+ // that do belong to the edit.
+ if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO && found_keyframe_after_edit == 0) {
+ found_keyframe_after_edit = 1;
+ continue;
+ }
+ if (ctts_sample_old != 0) {
+ if (add_ctts_entry(&msc->ctts_data, &msc->ctts_count,
+ &msc->ctts_allocated_size,
+ ctts_sample_old - edit_list_start_ctts_sample,
+ ctts_data_old[ctts_index_old].duration) == -1) {
+ av_log(mov->fc, AV_LOG_ERROR, "Cannot add CTTS entry %"PRId64" - {%"PRId64", %d}\n",
+ ctts_index_old, ctts_sample_old - edit_list_start_ctts_sample,
+ ctts_data_old[ctts_index_old].duration);
+ break;
+ }
}
}
break;
diff --git a/tests/fate/mov.mak b/tests/fate/mov.mak
index 01893a0767..76f66ff498 100644
--- a/tests/fate/mov.mak
+++ b/tests/fate/mov.mak
@@ -10,6 +10,7 @@ FATE_MOV = fate-mov-3elist \
fate-mov-gpmf-remux \
fate-mov-440hz-10ms \
fate-mov-ibi-elst-starts-b \
+ fate-mov-elst-ends-betn-b-and-i \
FATE_MOV_FFPROBE = fate-mov-aac-2048-priming \
fate-mov-zombie \
@@ -42,6 +43,9 @@ fate-mov-1elist-ends-last-bframe: CMD = framemd5 -i $(TARGET_SAMPLES)/mov/mov-1e
# Makes sure that we handle timestamps of packets in case of multiple edit lists with one of them ending on a B-frame correctly.
fate-mov-2elist-elist1-ends-bframe: CMD = framemd5 -i $(TARGET_SAMPLES)/mov/mov-2elist-elist1-ends-bframe.mov
+# Makes sure that if edit list ends on a B-frame but before the I-frame, then we output the B-frame but discard the I-frame.
+fate-mov-elst-ends-betn-b-and-i: CMD = framemd5 -i $(TARGET_SAMPLES)/mov/elst_ends_betn_b_and_i.mp4
+
# Makes sure that we handle edit lists and start padding correctly.
fate-mov-440hz-10ms: CMD = framemd5 -i $(TARGET_SAMPLES)/mov/440hz-10ms.m4a
diff --git a/tests/ref/fate/mov-elst-ends-betn-b-and-i b/tests/ref/fate/mov-elst-ends-betn-b-and-i
new file mode 100644
index 0000000000..d6f325bba2
--- /dev/null
+++ b/tests/ref/fate/mov-elst-ends-betn-b-and-i
@@ -0,0 +1,33 @@
+#format: frame checksums
+#version: 2
+#hash: MD5
+#tb 0: 1/25
+#media_type 0: video
+#codec_id 0: rawvideo
+#dimensions 0: 320x240
+#sar 0: 1/1
+#stream#, dts, pts, duration, size, hash
+0, 0, 0, 1, 115200, e10741e5457e9326d5e992e6c05c3e32
+0, 1, 1, 1, 115200, 7e20f8729b6b53dc11791927bf4a5aec
+0, 2, 2, 1, 115200, 4e5dc2b806e394cd666c968f736fecd0
+0, 3, 3, 1, 115200, 7a3c7473d44c5f60c07655f6fc0c2ac3
+0, 4, 4, 1, 115200, 038254422a603a3270c09cdcd149707b
+0, 5, 5, 1, 115200, 7553b6b4547cb23ef8f0392ed5a5d4b0
+0, 6, 6, 1, 115200, 6d017ede7f446124af7308667cb0dc41
+0, 7, 7, 1, 115200, 77752f0288ae64f857732b8e62e47457
+0, 8, 8, 1, 115200, d656833951af99330625f7c6de7685c4
+0, 9, 9, 1, 115200, 14338b833e431e566ac98da841600bfe
+0, 10, 10, 1, 115200, 07ea95d1659f3c4424a470a546d0df6e
+0, 11, 11, 1, 115200, fd05b8cc83072f813e89d394d1f6efc6
+0, 12, 12, 1, 115200, 750b82ca5c7e901545e7b1aa69692426
+0, 13, 13, 1, 115200, 7347679ab09bc936047368b8caebcaff
+0, 14, 14, 1, 115200, 63a23fdd57ac8462b9ffbcb12ab717b3
+0, 15, 15, 1, 115200, 705257a1c99693db233e2a3ee027adcf
+0, 16, 16, 1, 115200, df861a2ec7a4ef70e82b1c28025e5a48
+0, 17, 17, 1, 115200, 2a8b403c077b6b43aa71eaf7d1537713
+0, 18, 18, 1, 115200, 973b5cd3ce473e3970dfa96045553172
+0, 19, 19, 1, 115200, fc612c0afeae3b6576b5ee2f3f119832
+0, 20, 20, 1, 115200, 97074fe5a0b6e7e8470729654092e56c
+0, 21, 21, 1, 115200, 8cf9337201065335b3aa4da21dc9b37a
+0, 22, 22, 1, 115200, 93ff3589294cc0673af3daee1e7fe42a
+0, 23, 23, 1, 115200, c0b6fd870a022f374f9d6c697e8e293d
--
2.15.0.448.gf294e3d99a-goog
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