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Fix TS H264 key frame detection (2) #864

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Dec 12, 2023
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2 changes: 2 additions & 0 deletions RELEASENOTES.md
Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,8 @@
`ColorInfo.colorSpace`, `ColorInfo.colorTransfer`, and
`ColorInfo.colorRange` values
([#692](https:/androidx/media/pull/692)).
* Fix wrong keyframe detection for TS H264 streams
([#864](https:/androidx/media/pull/864)).
* Audio:
* Video:
* Add workaround for a device issue on Galaxy Tab S7 FE, Chromecast with
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -183,7 +183,7 @@ private void startNalUnit(long position, int nalUnitType, long pesTimeUs) {
pps.startNalUnit(nalUnitType);
}
sei.startNalUnit(nalUnitType);
sampleReader.startNalUnit(position, nalUnitType, pesTimeUs);
sampleReader.startNalUnit(position, nalUnitType, pesTimeUs, randomAccessIndicator);
}

@RequiresNonNull("sampleReader")
Expand Down Expand Up @@ -253,8 +253,7 @@ private void endNalUnit(long position, int offset, int discardPadding, long pesT
seiWrapper.setPosition(4); // NAL prefix and nal_unit() header.
seiReader.consume(pesTimeUs, seiWrapper);
}
boolean sampleIsKeyFrame =
sampleReader.endNalUnit(position, offset, hasOutputFormat, randomAccessIndicator);
boolean sampleIsKeyFrame = sampleReader.endNalUnit(position, offset, hasOutputFormat);
if (sampleIsKeyFrame) {
// This is either an IDR frame or the first I-frame since the random access indicator, so mark
// it as a keyframe. Clear the flag so that subsequent non-IDR I-frames are not marked as
Expand Down Expand Up @@ -297,6 +296,7 @@ private static final class SampleReader {
private long samplePosition;
private long sampleTimeUs;
private boolean sampleIsKeyframe;
private boolean randomAccessIndicator;

public SampleReader(
TrackOutput output, boolean allowNonIdrKeyframes, boolean detectAccessUnits) {
Expand Down Expand Up @@ -330,10 +330,12 @@ public void reset() {
sliceHeader.clear();
}

public void startNalUnit(long position, int type, long pesTimeUs) {
public void startNalUnit(
long position, int type, long pesTimeUs, boolean randomAccessIndicator) {
nalUnitType = type;
nalUnitTimeUs = pesTimeUs;
nalUnitStartPosition = position;
this.randomAccessIndicator = randomAccessIndicator;
if ((allowNonIdrKeyframes && nalUnitType == NalUnitUtil.NAL_UNIT_TYPE_NON_IDR)
|| (detectAccessUnits
&& (nalUnitType == NalUnitUtil.NAL_UNIT_TYPE_IDR
Expand Down Expand Up @@ -481,8 +483,7 @@ public void appendToNalUnit(byte[] data, int offset, int limit) {
isFilling = false;
}

public boolean endNalUnit(
long position, int offset, boolean hasOutputFormat, boolean randomAccessIndicator) {
public boolean endNalUnit(long position, int offset, boolean hasOutputFormat) {
if (nalUnitType == NalUnitUtil.NAL_UNIT_TYPE_AUD
|| (detectAccessUnits && sliceHeader.isFirstVclNalUnitOfPicture(previousSliceHeader))) {
// If the NAL unit ending is the start of a new sample, output the previous one.
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,11 @@ public void sampleWithH263() throws Exception {
ExtractorAsserts.assertBehavior(TsExtractor::new, "media/ts/sample_h263.ts", simulationConfig);
}

@Test
public void sampleWithH264() throws Exception {
ExtractorAsserts.assertBehavior(TsExtractor::new, "media/ts/sample_h264.ts", simulationConfig);
}

@Test
public void sampleWithH264AndMpegAudio() throws Exception {
ExtractorAsserts.assertBehavior(
Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,144 @@
seekMap:
isSeekable = true
duration = 900000
getPosition(0) = [[timeUs=0, position=0]]
getPosition(1) = [[timeUs=1, position=0]]
getPosition(450000) = [[timeUs=450000, position=23030]]
getPosition(900000) = [[timeUs=900000, position=46248]]
numberOfTracks = 1
track 256:
total output bytes = 41614
sample count = 30
format 0:
id = 1/256
sampleMimeType = video/avc
codecs = avc1.64001F
width = 854
height = 480
colorInfo:
lumaBitdepth = 8
chromaBitdepth = 8
initializationData:
data = length 29, hash A220FDE0
data = length 9, hash D971CD89
sample 0:
time = 66666
flags = 1
data = length 856, hash E3FC14FA
sample 1:
time = 100000
flags = 0
data = length 3330, hash ACE433CC
sample 2:
time = 166666
flags = 0
data = length 6849, hash 2762E298
sample 3:
time = 133333
flags = 0
data = length 794, hash 16489833
sample 4:
time = 233333
flags = 0
data = length 1874, hash 24DF8A2D
sample 5:
time = 200000
flags = 0
data = length 1209, hash B137200F
sample 6:
time = 366666
flags = 0
data = length 476, hash 1D70B27E
sample 7:
time = 300000
flags = 0
data = length 325, hash D3FB2CC2
sample 8:
time = 266666
flags = 0
data = length 89, hash F66C5D60
sample 9:
time = 333333
flags = 0
data = length 177, hash 7E6DB5B7
sample 10:
time = 400000
flags = 1
data = length 11054, hash 1FC7442D
sample 11:
time = 533333
flags = 0
data = length 302, hash 5432E85C
sample 12:
time = 466666
flags = 0
data = length 302, hash 95A21C90
sample 13:
time = 433333
flags = 0
data = length 96, hash 8C98DBB8
sample 14:
time = 500000
flags = 0
data = length 198, hash 114E22D9
sample 15:
time = 666666
flags = 0
data = length 303, hash C2C45716
sample 16:
time = 600000
flags = 0
data = length 168, hash 1B048DCA
sample 17:
time = 566666
flags = 0
data = length 98, hash 3AA3B8B4
sample 18:
time = 633333
flags = 0
data = length 108, hash 4F67E6F8
sample 19:
time = 700000
flags = 0
data = length 110, hash 625A9B91
sample 20:
time = 733333
flags = 1
data = length 11235, hash 8EDDEB9
sample 21:
time = 866666
flags = 0
data = length 358, hash 797276E4
sample 22:
time = 800000
flags = 0
data = length 336, hash B92DBED9
sample 23:
time = 766666
flags = 0
data = length 105, hash 223F3D12
sample 24:
time = 833333
flags = 0
data = length 106, hash DF8D1552
sample 25:
time = 1000000
flags = 0
data = length 235, hash 6127527D
sample 26:
time = 933333
flags = 0
data = length 109, hash E8E69F9F
sample 27:
time = 900000
flags = 0
data = length 84, hash 54E55CB4
sample 28:
time = 966666
flags = 0
data = length 93, hash B6B6263C
sample 29:
time = 1033333
flags = 0
data = length 234, hash A48D3D90
tracksEnded = true
Original file line number Diff line number Diff line change
@@ -0,0 +1,108 @@
seekMap:
isSeekable = true
duration = 900000
getPosition(0) = [[timeUs=0, position=0]]
getPosition(1) = [[timeUs=1, position=0]]
getPosition(450000) = [[timeUs=450000, position=23030]]
getPosition(900000) = [[timeUs=900000, position=46248]]
numberOfTracks = 1
track 256:
total output bytes = 25812
sample count = 21
format 0:
id = 1/256
sampleMimeType = video/avc
codecs = avc1.64001F
width = 854
height = 480
colorInfo:
lumaBitdepth = 8
chromaBitdepth = 8
initializationData:
data = length 29, hash A220FDE0
data = length 9, hash D971CD89
sample 0:
time = 333333
flags = 0
data = length 177, hash 7E6DB5B7
sample 1:
time = 400000
flags = 1
data = length 11054, hash 1FC7442D
sample 2:
time = 533333
flags = 0
data = length 302, hash 5432E85C
sample 3:
time = 466666
flags = 0
data = length 302, hash 95A21C90
sample 4:
time = 433333
flags = 0
data = length 96, hash 8C98DBB8
sample 5:
time = 500000
flags = 0
data = length 198, hash 114E22D9
sample 6:
time = 666666
flags = 0
data = length 303, hash C2C45716
sample 7:
time = 600000
flags = 0
data = length 168, hash 1B048DCA
sample 8:
time = 566666
flags = 0
data = length 98, hash 3AA3B8B4
sample 9:
time = 633333
flags = 0
data = length 108, hash 4F67E6F8
sample 10:
time = 700000
flags = 0
data = length 110, hash 625A9B91
sample 11:
time = 733333
flags = 1
data = length 11235, hash 8EDDEB9
sample 12:
time = 866666
flags = 0
data = length 358, hash 797276E4
sample 13:
time = 800000
flags = 0
data = length 336, hash B92DBED9
sample 14:
time = 766666
flags = 0
data = length 105, hash 223F3D12
sample 15:
time = 833333
flags = 0
data = length 106, hash DF8D1552
sample 16:
time = 1000000
flags = 0
data = length 235, hash 6127527D
sample 17:
time = 933333
flags = 0
data = length 109, hash E8E69F9F
sample 18:
time = 900000
flags = 0
data = length 84, hash 54E55CB4
sample 19:
time = 966666
flags = 0
data = length 93, hash B6B6263C
sample 20:
time = 1033333
flags = 0
data = length 234, hash A48D3D90
tracksEnded = true
Original file line number Diff line number Diff line change
@@ -0,0 +1,72 @@
seekMap:
isSeekable = true
duration = 900000
getPosition(0) = [[timeUs=0, position=0]]
getPosition(1) = [[timeUs=1, position=0]]
getPosition(450000) = [[timeUs=450000, position=23030]]
getPosition(900000) = [[timeUs=900000, position=46248]]
numberOfTracks = 1
track 256:
total output bytes = 13114
sample count = 12
format 0:
id = 1/256
sampleMimeType = video/avc
codecs = avc1.64001F
width = 854
height = 480
colorInfo:
lumaBitdepth = 8
chromaBitdepth = 8
initializationData:
data = length 29, hash A220FDE0
data = length 9, hash D971CD89
sample 0:
time = 633333
flags = 0
data = length 108, hash 4F67E6F8
sample 1:
time = 700000
flags = 0
data = length 110, hash 625A9B91
sample 2:
time = 733333
flags = 1
data = length 11235, hash 8EDDEB9
sample 3:
time = 866666
flags = 0
data = length 358, hash 797276E4
sample 4:
time = 800000
flags = 0
data = length 336, hash B92DBED9
sample 5:
time = 766666
flags = 0
data = length 105, hash 223F3D12
sample 6:
time = 833333
flags = 0
data = length 106, hash DF8D1552
sample 7:
time = 1000000
flags = 0
data = length 235, hash 6127527D
sample 8:
time = 933333
flags = 0
data = length 109, hash E8E69F9F
sample 9:
time = 900000
flags = 0
data = length 84, hash 54E55CB4
sample 10:
time = 966666
flags = 0
data = length 93, hash B6B6263C
sample 11:
time = 1033333
flags = 0
data = length 234, hash A48D3D90
tracksEnded = true
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