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Tweak use of TimestampAdjuster for seeking

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- Fix use of getTimestampOffsetUs in TsExtractor where
  getFirstSampleTimestampUs should have been used.
- Don't reset TimestampAdjuster if it's in no-offset mode.
- Improve comment clarity

#minor-release

PiperOrigin-RevId: 388682711
This commit is contained in:
olly 2021-08-04 14:36:13 +01:00 committed by Christos Tsilopoulos
parent 4b1609d569
commit a34809bb9d
16 changed files with 123 additions and 109 deletions
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27
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/ts/PsExtractor.java
View File

@ -135,16 +135,23 @@ public final class PsExtractor implements Extractor {
@Override @Override
public void seek(long position, long timeUs) { public void seek(long position, long timeUs) {
boolean hasNotEncounteredFirstTimestamp = // If the timestamp adjuster has not yet established a timestamp offset, we need to reset its
timestampAdjuster.getTimestampOffsetUs() == C.TIME_UNSET; // expected first sample timestamp to be the new seek position. Without this, the timestamp
if (hasNotEncounteredFirstTimestamp // adjuster would incorrectly establish its timestamp offset assuming that the first sample
|| (timestampAdjuster.getFirstSampleTimestampUs() != 0 // after this seek corresponds to the start of the stream (or a previous seek position, if there
&& timestampAdjuster.getFirstSampleTimestampUs() != timeUs)) { // was one).
// - If the timestamp adjuster in the PS stream has not encountered any sample, it's going to boolean resetTimestampAdjuster = timestampAdjuster.getTimestampOffsetUs() == C.TIME_UNSET;
// treat the first timestamp encountered as sample time 0, which is incorrect. In this case, if (!resetTimestampAdjuster) {
// we have to set the first sample timestamp manually. long adjusterFirstSampleTimestampUs = timestampAdjuster.getFirstSampleTimestampUs();
// - If the timestamp adjuster has its timestamp set manually before, and now we seek to a // Also reset the timestamp adjuster if its offset was calculated based on a non-zero position
// different position, we need to set the first sample timestamp manually again. // in the stream (other than the position being seeked to), since in this case the offset may
// not be accurate.
resetTimestampAdjuster =
adjusterFirstSampleTimestampUs != C.TIME_UNSET
&& adjusterFirstSampleTimestampUs != 0
&& adjusterFirstSampleTimestampUs != timeUs;
}
if (resetTimestampAdjuster) {
timestampAdjuster.reset(timeUs); timestampAdjuster.reset(timeUs);
} }

27
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/ts/TsExtractor.java
View File

@ -252,16 +252,23 @@ public final class TsExtractor implements Extractor {
int timestampAdjustersCount = timestampAdjusters.size(); int timestampAdjustersCount = timestampAdjusters.size();
for (int i = 0; i < timestampAdjustersCount; i++) { for (int i = 0; i < timestampAdjustersCount; i++) {
TimestampAdjuster timestampAdjuster = timestampAdjusters.get(i); TimestampAdjuster timestampAdjuster = timestampAdjusters.get(i);
boolean hasNotEncounteredFirstTimestamp = // If the timestamp adjuster has not yet established a timestamp offset, we need to reset its
timestampAdjuster.getTimestampOffsetUs() == C.TIME_UNSET; // expected first sample timestamp to be the new seek position. Without this, the timestamp
if (hasNotEncounteredFirstTimestamp // adjuster would incorrectly establish its timestamp offset assuming that the first sample
|| (timestampAdjuster.getTimestampOffsetUs() != 0 // after this seek corresponds to the start of the stream (or a previous seek position, if
&& timestampAdjuster.getFirstSampleTimestampUs() != timeUs)) { // there was one).
// - If a track in the TS stream has not encountered any sample, it's going to treat the boolean resetTimestampAdjuster = timestampAdjuster.getTimestampOffsetUs() == C.TIME_UNSET;
// first sample encountered as timestamp 0, which is incorrect. So we have to set the first if (!resetTimestampAdjuster) {
// sample timestamp for that track manually. long adjusterFirstSampleTimestampUs = timestampAdjuster.getFirstSampleTimestampUs();
// - If the timestamp adjuster has its timestamp set manually before, and now we seek to a // Also reset the timestamp adjuster if its offset was calculated based on a non-zero
// different position, we need to set the first sample timestamp manually again. // position in the stream (other than the position being seeked to), since in this case the
// offset may not be accurate.
resetTimestampAdjuster =
adjusterFirstSampleTimestampUs != C.TIME_UNSET
&& adjusterFirstSampleTimestampUs != 0
&& adjusterFirstSampleTimestampUs != timeUs;
}
if (resetTimestampAdjuster) {
timestampAdjuster.reset(timeUs); timestampAdjuster.reset(timeUs);
} }
} }

12
testdata/src/test/assets/extractordumps/ts/sample_h262_mpeg_audio.ts.1.dump vendored
View File

@ -17,11 +17,11 @@ track 256:
initializationData: initializationData:
data = length 22, hash CE183139 data = length 22, hash CE183139
sample 0: sample 0:
time = 55610 time = 33366
flags = 1 flags = 1
data = length 20711, hash 34341E8 data = length 20711, hash 34341E8
sample 1: sample 1:
time = 88977 time = 66733
flags = 0 flags = 0
data = length 18112, hash EC44B35B data = length 18112, hash EC44B35B
track 257: track 257:
@ -35,19 +35,19 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 44699 time = 22455
flags = 1 flags = 1
data = length 1253, hash 727FD1C6 data = length 1253, hash 727FD1C6
sample 1: sample 1:
time = 70821 time = 48577
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 2: sample 2:
time = 96944 time = 74700
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 3: sample 3:
time = 123066 time = 100822
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
tracksEnded = true tracksEnded = true

12
testdata/src/test/assets/extractordumps/ts/sample_h262_mpeg_audio.ts.2.dump vendored
View File

@ -17,11 +17,11 @@ track 256:
initializationData: initializationData:
data = length 22, hash CE183139 data = length 22, hash CE183139
sample 0: sample 0:
time = 77854 time = 33366
flags = 1 flags = 1
data = length 20711, hash 34341E8 data = length 20711, hash 34341E8
sample 1: sample 1:
time = 111221 time = 66733
flags = 0 flags = 0
data = length 18112, hash EC44B35B data = length 18112, hash EC44B35B
track 257: track 257:
@ -35,19 +35,19 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 66943 time = 22455
flags = 1 flags = 1
data = length 1253, hash 727FD1C6 data = length 1253, hash 727FD1C6
sample 1: sample 1:
time = 93065 time = 48577
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 2: sample 2:
time = 119188 time = 74700
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 3: sample 3:
time = 145310 time = 100822
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
tracksEnded = true tracksEnded = true

4
testdata/src/test/assets/extractordumps/ts/sample_h262_mpeg_audio.ts.3.dump vendored
View File

@ -27,11 +27,11 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 66733 time = 74700
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 1: sample 1:
time = 92855 time = 100822
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
tracksEnded = true tracksEnded = true

36
testdata/src/test/assets/extractordumps/ts/sample_h263.ts.1.dump vendored
View File

@ -17,75 +17,75 @@ track 256:
initializationData: initializationData:
data = length 47, hash 7696BF67 data = length 47, hash 7696BF67
sample 0: sample 0:
time = 320000 time = 240000
flags = 0 flags = 0
data = length 212, hash 835B0727 data = length 212, hash 835B0727
sample 1: sample 1:
time = 360000 time = 280000
flags = 0 flags = 0
data = length 212, hash E9AF0AB7 data = length 212, hash E9AF0AB7
sample 2: sample 2:
time = 400000 time = 320000
flags = 0 flags = 0
data = length 212, hash E9517D06 data = length 212, hash E9517D06
sample 3: sample 3:
time = 440000 time = 360000
flags = 0 flags = 0
data = length 212, hash 4FA58096 data = length 212, hash 4FA58096
sample 4: sample 4:
time = 480000 time = 400000
flags = 0 flags = 0
data = length 212, hash 4F47F2E5 data = length 212, hash 4F47F2E5
sample 5: sample 5:
time = 520000 time = 440000
flags = 0 flags = 0
data = length 212, hash B59BF675 data = length 212, hash B59BF675
sample 6: sample 6:
time = 560000 time = 480000
flags = 1 flags = 1
data = length 11769, hash 3ED9DF06 data = length 11769, hash 3ED9DF06
sample 7: sample 7:
time = 600000 time = 520000
flags = 0 flags = 0
data = length 230, hash 2AF3505D data = length 230, hash 2AF3505D
sample 8: sample 8:
time = 640000 time = 560000
flags = 0 flags = 0
data = length 222, hash F4E7436D data = length 222, hash F4E7436D
sample 9: sample 9:
time = 680000 time = 600000
flags = 0 flags = 0
data = length 222, hash F0F812FD data = length 222, hash F0F812FD
sample 10: sample 10:
time = 720000 time = 640000
flags = 0 flags = 0
data = length 222, hash 18472E8C data = length 222, hash 18472E8C
sample 11: sample 11:
time = 760000 time = 680000
flags = 0 flags = 0
data = length 222, hash 1457FE1C data = length 222, hash 1457FE1C
sample 12: sample 12:
time = 800000 time = 720000
flags = 0 flags = 0
data = length 222, hash 3BA719AB data = length 222, hash 3BA719AB
sample 13: sample 13:
time = 840000 time = 760000
flags = 0 flags = 0
data = length 222, hash 37B7E93B data = length 222, hash 37B7E93B
sample 14: sample 14:
time = 880000 time = 800000
flags = 0 flags = 0
data = length 222, hash 5F0704CA data = length 222, hash 5F0704CA
sample 15: sample 15:
time = 920000 time = 840000
flags = 0 flags = 0
data = length 222, hash 5B17D45A data = length 222, hash 5B17D45A
sample 16: sample 16:
time = 960000 time = 880000
flags = 0 flags = 0
data = length 222, hash 8266EFE9 data = length 222, hash 8266EFE9
sample 17: sample 17:
time = 1000000 time = 920000
flags = 0 flags = 0
data = length 222, hash 7E77BF79 data = length 222, hash 7E77BF79
tracksEnded = true tracksEnded = true

12
testdata/src/test/assets/extractordumps/ts/sample_h264_mpeg_audio.ts.1.dump vendored
View File

@ -19,11 +19,11 @@ track 256:
data = length 29, hash 4C2CAE9C data = length 29, hash 4C2CAE9C
data = length 9, hash D971CD89 data = length 9, hash D971CD89
sample 0: sample 0:
time = 88977 time = 66733
flags = 1 flags = 1
data = length 12394, hash A39F5311 data = length 12394, hash A39F5311
sample 1: sample 1:
time = 122344 time = 100100
flags = 0 flags = 0
data = length 813, hash 99F7B4FA data = length 813, hash 99F7B4FA
track 257: track 257:
@ -37,19 +37,19 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 88977 time = 66733
flags = 1 flags = 1
data = length 1253, hash 727FD1C6 data = length 1253, hash 727FD1C6
sample 1: sample 1:
time = 115099 time = 92855
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 2: sample 2:
time = 141221 time = 118977
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 3: sample 3:
time = 167343 time = 145099
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
tracksEnded = true tracksEnded = true

12
testdata/src/test/assets/extractordumps/ts/sample_h264_mpeg_audio.ts.2.dump vendored
View File

@ -19,11 +19,11 @@ track 256:
data = length 29, hash 4C2CAE9C data = length 29, hash 4C2CAE9C
data = length 9, hash D971CD89 data = length 9, hash D971CD89
sample 0: sample 0:
time = 111221 time = 66733
flags = 1 flags = 1
data = length 12394, hash A39F5311 data = length 12394, hash A39F5311
sample 1: sample 1:
time = 144588 time = 100100
flags = 0 flags = 0
data = length 813, hash 99F7B4FA data = length 813, hash 99F7B4FA
track 257: track 257:
@ -37,19 +37,19 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 111221 time = 66733
flags = 1 flags = 1
data = length 1253, hash 727FD1C6 data = length 1253, hash 727FD1C6
sample 1: sample 1:
time = 137343 time = 92855
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 2: sample 2:
time = 163465 time = 118977
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 3: sample 3:
time = 189587 time = 145099
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
tracksEnded = true tracksEnded = true

8
testdata/src/test/assets/extractordumps/ts/sample_h264_no_access_unit_delimiters.ts.1.dump vendored
View File

@ -19,19 +19,19 @@ track 256:
data = length 29, hash 4C2CAE9C data = length 29, hash 4C2CAE9C
data = length 9, hash D971CD89 data = length 9, hash D971CD89
sample 0: sample 0:
time = 88977 time = 66733
flags = 0 flags = 0
data = length 734, hash AF0D9485 data = length 734, hash AF0D9485
sample 1: sample 1:
time = 88977 time = 66733
flags = 1 flags = 1
data = length 10938, hash 68420875 data = length 10938, hash 68420875
sample 2: sample 2:
time = 155710 time = 133466
flags = 0 flags = 0
data = length 6, hash 34E6CF79 data = length 6, hash 34E6CF79
sample 3: sample 3:
time = 155710 time = 133466
flags = 0 flags = 0
data = length 518, hash 546C177 data = length 518, hash 546C177
tracksEnded = true tracksEnded = true

8
testdata/src/test/assets/extractordumps/ts/sample_h264_no_access_unit_delimiters.ts.2.dump vendored
View File

@ -19,19 +19,19 @@ track 256:
data = length 29, hash 4C2CAE9C data = length 29, hash 4C2CAE9C
data = length 9, hash D971CD89 data = length 9, hash D971CD89
sample 0: sample 0:
time = 111221 time = 66733
flags = 0 flags = 0
data = length 734, hash AF0D9485 data = length 734, hash AF0D9485
sample 1: sample 1:
time = 111221 time = 66733
flags = 1 flags = 1
data = length 10938, hash 68420875 data = length 10938, hash 68420875
sample 2: sample 2:
time = 177954 time = 133466
flags = 0 flags = 0
data = length 6, hash 34E6CF79 data = length 6, hash 34E6CF79
sample 3: sample 3:
time = 177954 time = 133466
flags = 0 flags = 0
data = length 518, hash 546C177 data = length 518, hash 546C177
tracksEnded = true tracksEnded = true

20
testdata/src/test/assets/extractordumps/ts/sample_scte35.ts.1.dump vendored
View File

@ -17,11 +17,11 @@ track 256:
initializationData: initializationData:
data = length 22, hash CE183139 data = length 22, hash CE183139
sample 0: sample 0:
time = 55610 time = 33366
flags = 1 flags = 1
data = length 20711, hash 34341E8 data = length 20711, hash 34341E8
sample 1: sample 1:
time = 88977 time = 66733
flags = 0 flags = 0
data = length 18112, hash EC44B35B data = length 18112, hash EC44B35B
track 257: track 257:
@ -35,19 +35,19 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 44699 time = 22455
flags = 1 flags = 1
data = length 1253, hash 727FD1C6 data = length 1253, hash 727FD1C6
sample 1: sample 1:
time = 70821 time = 48577
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 2: sample 2:
time = 96944 time = 74700
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 3: sample 3:
time = 123066 time = 100822
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
track 600: track 600:
@ -55,17 +55,17 @@ track 600:
sample count = 3 sample count = 3
format 0: format 0:
sampleMimeType = application/x-scte35 sampleMimeType = application/x-scte35
subsampleOffsetUs = -1377756 subsampleOffsetUs = -1400000
sample 0: sample 0:
time = 55610 time = 33366
flags = 1 flags = 1
data = length 35, hash A892AAAF data = length 35, hash A892AAAF
sample 1: sample 1:
time = 55610 time = 33366
flags = 1 flags = 1
data = length 35, hash A892AAAF data = length 35, hash A892AAAF
sample 2: sample 2:
time = 55610 time = 33366
flags = 1 flags = 1
data = length 35, hash DFA3EF74 data = length 35, hash DFA3EF74
tracksEnded = true tracksEnded = true

20
testdata/src/test/assets/extractordumps/ts/sample_scte35.ts.2.dump vendored
View File

@ -17,11 +17,11 @@ track 256:
initializationData: initializationData:
data = length 22, hash CE183139 data = length 22, hash CE183139
sample 0: sample 0:
time = 77854 time = 33366
flags = 1 flags = 1
data = length 20711, hash 34341E8 data = length 20711, hash 34341E8
sample 1: sample 1:
time = 111221 time = 66733
flags = 0 flags = 0
data = length 18112, hash EC44B35B data = length 18112, hash EC44B35B
track 257: track 257:
@ -35,19 +35,19 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 66943 time = 22455
flags = 1 flags = 1
data = length 1253, hash 727FD1C6 data = length 1253, hash 727FD1C6
sample 1: sample 1:
time = 93065 time = 48577
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 2: sample 2:
time = 119188 time = 74700
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 3: sample 3:
time = 145310 time = 100822
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
track 600: track 600:
@ -55,17 +55,17 @@ track 600:
sample count = 3 sample count = 3
format 0: format 0:
sampleMimeType = application/x-scte35 sampleMimeType = application/x-scte35
subsampleOffsetUs = -1355512 subsampleOffsetUs = -1400000
sample 0: sample 0:
time = 77854 time = 33366
flags = 1 flags = 1
data = length 35, hash A892AAAF data = length 35, hash A892AAAF
sample 1: sample 1:
time = 77854 time = 33366
flags = 1 flags = 1
data = length 35, hash A892AAAF data = length 35, hash A892AAAF
sample 2: sample 2:
time = 77854 time = 33366
flags = 1 flags = 1
data = length 35, hash DFA3EF74 data = length 35, hash DFA3EF74
tracksEnded = true tracksEnded = true

6
testdata/src/test/assets/extractordumps/ts/sample_scte35.ts.3.dump vendored
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@ -27,11 +27,11 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 66733 time = 74700
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 1: sample 1:
time = 92855 time = 100822
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
track 600: track 600:
@ -39,5 +39,5 @@ track 600:
sample count = 0 sample count = 0
format 0: format 0:
sampleMimeType = application/x-scte35 sampleMimeType = application/x-scte35
subsampleOffsetUs = -1355512 subsampleOffsetUs = -1400000
tracksEnded = true tracksEnded = true

12
testdata/src/test/assets/extractordumps/ts/sample_with_junk.1.dump vendored
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@ -17,11 +17,11 @@ track 256:
initializationData: initializationData:
data = length 22, hash CE183139 data = length 22, hash CE183139
sample 0: sample 0:
time = 55610 time = 33366
flags = 1 flags = 1
data = length 20711, hash 34341E8 data = length 20711, hash 34341E8
sample 1: sample 1:
time = 88977 time = 66733
flags = 0 flags = 0
data = length 18112, hash EC44B35B data = length 18112, hash EC44B35B
track 257: track 257:
@ -35,19 +35,19 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 44699 time = 22455
flags = 1 flags = 1
data = length 1253, hash 727FD1C6 data = length 1253, hash 727FD1C6
sample 1: sample 1:
time = 70821 time = 48577
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 2: sample 2:
time = 96944 time = 74700
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 3: sample 3:
time = 123066 time = 100822
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
tracksEnded = true tracksEnded = true

12
testdata/src/test/assets/extractordumps/ts/sample_with_junk.2.dump vendored
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@ -17,11 +17,11 @@ track 256:
initializationData: initializationData:
data = length 22, hash CE183139 data = length 22, hash CE183139
sample 0: sample 0:
time = 77854 time = 33366
flags = 1 flags = 1
data = length 20711, hash 34341E8 data = length 20711, hash 34341E8
sample 1: sample 1:
time = 111221 time = 66733
flags = 0 flags = 0
data = length 18112, hash EC44B35B data = length 18112, hash EC44B35B
track 257: track 257:
@ -35,19 +35,19 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 66943 time = 22455
flags = 1 flags = 1
data = length 1253, hash 727FD1C6 data = length 1253, hash 727FD1C6
sample 1: sample 1:
time = 93065 time = 48577
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 2: sample 2:
time = 119188 time = 74700
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 3: sample 3:
time = 145310 time = 100822
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
tracksEnded = true tracksEnded = true

4
testdata/src/test/assets/extractordumps/ts/sample_with_junk.3.dump vendored
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@ -27,11 +27,11 @@ track 257:
sampleRate = 44100 sampleRate = 44100
language = und language = und
sample 0: sample 0:
time = 66733 time = 74700
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
sample 1: sample 1:
time = 92855 time = 100822
flags = 1 flags = 1
data = length 1254, hash 73FB07B8 data = length 1254, hash 73FB07B8
tracksEnded = true tracksEnded = true