The old vtt sample data has the header as "WEBVTT FILE" which does
not reflect what the spec says it should be.
This changes it to "WEBVTT" as described in the WebVTT spec.
Change-Id: Ib54396a8b937501a835dafe966bf05b95b0b22c4
When a gap is found in the text stream, the WebVtt to Mp4 converter will
now output the special empty vtt cue.
Change-Id: I8be88c6b7589aa120a2215e1e4b8e98031fe326d
Closes: #324
- Add empty lines between different types of renditions to improve
readability.
- Group variants with the same audio/text group together, as it is
where the Adaptation occurs.
- Write master playlist after writing media playlists. This makes
more sense and it is also necessary to have the bandwidth of
the last iframe playist segment correctly computed.
- For fMP4, I-Frame segment must include the 'moof' header.
- Fix a problem that hls_iframe_playlist_name is not passed to
MuxerListenerFactory.
Issue: #287
Change-Id: Icf37c5de1dc29f85ae3f419cbc3264d04ca491a4
Adding all the code needed to allow the webvtt to mp4 converter to
send empty vtt cues. This change does everything except writing the
mp4 box.
Bug: #324
Change-Id: I16188e6357632b2ed06f7e9bab7844f093266696
Instead of always tracking segments with an index, this change makes a struct
that will act as the segment and track which segments are in it. Each
segment will store all the samples in the order they were given, it will
avoid any sorting.
Closes: 72867775
Change-Id: Ic5829161510fe8f3320d960c3bc4a276c26ff3be
Create WebVtt test that shows that the current implementation of the
webvtt segmenter does not respect the input order of cues.
Bug: 72867775
Change-Id: I811b3a93c10650e0cf9290c9c0c1680f562deb30
Took the same logic for DEFAULT and AUTOSELECT used by audio and
applied it to text. Combined the build tag logic for audio and
text as they were the same expect for a couple fields.
Bug: #205
Change-Id: I75ecbf4b25cd559b826982d12a5b132e70b83b69
The master playlist and media playlist did not have implementations
for handling text streams. This change adds support for both.
Bug: #205
Change-Id: I1329b8cc2585f15b89959071db9dd16d35847cba
If no hls group name is given, we would default to "audio" but as
we are working to support text, this won't make sense to see
GROUP="audio" on a text stream.
Instead default to "default-audio-group" for audio streams. A specific
text default will be added later.
Bug: #205
Change-Id: Iefc8bfd35708286619d0004348294d98f2c38482
In the master play list, use a class called variant to build
the video tags.
The variant list will always have one entry. In the case that there
are no audio streams, the variant list will have a null entry.
Bug: #205
Change-Id: I6e4acd83a31cd267c173e4f4c910f93781fe6efd
According to the HLS+WebVTT spec, if there is no text in a segment
a webvtt file with no cues can be added to the manifest. By outputting
empty segments it allows the accumulated duration in the Master Playlist
to better represent the duration of the text stream.
Spec Reference: //tools.ietf.org/html/draft-pantos-http-live-streaming-23
Section 3.5. WebVTT
Bug: #205
Change-Id: I5de01200fd9fa99c57949c773e8ee926b0f6ba8a
It was the same code to make the media playlists for each test, so this
change moves that logic into common functions.
Change-Id: Ifb8680247ad4335332251815a2db5d56d28151aa
- Removed SetError, Swap, Matches functions, which are not used
- Added moveable version of Update function
- Added VLOG(1) warning in Status for non-ok status
- Replaced OS_WIN with _WIN32 as OS_WIN may not have been defined.
Change-Id: Ib6b7aab6e6fee270937b150f1e4bf993e914a568
Moved the file copy out of StreamInfoToTextMediaInfo as the file
copy is only needed by the MPD output but the Media Info is needed
by MPD output and media info dump.
Bug: 36138902
Change-Id: Id233f2041b3e72345b8f709791c6b6070484222f
The IV was incorrectly updated across samples.
Created a new cryptor SampleAesEc3Cryptor specially for SAMPLE-AES
EC3 encryption / decryption. The new cryptor uses constant-iv, and
makes sure the IV is reset to the initial value at the beginning
of each audio frame and chained across syncframes within the the
audio frame.
Also added E-AC3 end to end test.
Fixes#279
Change-Id: I0aa60c17836daeef5ba433a05e5ff0906191d9ac
There could be rounding errors in MSE which could cut the first key
frame of the representation and thus cut all the frames until the next
key frame, which then leads to a big gap in presentation
timeline which stalls playback.
Adjusting presentationTimeOffset (PTO) by -1, i.e. backing off PTO by 1
to compensate for the possible rounding error. It should not cause any
playback issues as it is small enough. The workaround can be removed
once the problem is handled in all players.
The PTO adjustment is configurable with command line flag:
--pto_adjustment, with value set to -1 by default.
b/71808910
Change-Id: I9c4d1e2ee84008b859a3638a8146c910cead1f15
Instead of using next segment start time, as CueEvent time may not
align with segment start time exactly.
Also remove the incorrect DCHECK in ChunkingHandler when processing
kScte35Event.
Change-Id: I4987740c99c8d0d25c9b99bddc5e557e45d308e0
According to HLS spec: https://goo.gl/MiqjNd 4.3.4.1.1. Rendition Groups
- A Group MUST NOT have more than one member with a DEFAULT attribute of
YES.
- Each EXT-X-MEDIA tag with an AUTOSELECT=YES attribute SHOULD have a
combination of LANGUAGE[RFC5646], ASSOC-LANGUAGE, FORCED, and
CHARACTERISTICS attributes that is distinct from those of other
AUTOSELECT=YES members of its Group.
We tag the first rendition with a particular language in an audio group
with 'AUTOSELECT'; it is tagged with 'DEFAULT' too if the language
matches --default_language.
Fixes#315
Change-Id: Iacc0bc8c89ebffce8717fa65e82d6daf5a1f6adc
When transmuxing from TS to MP4 if there is emulation prevention
bytes in general_profile_tier_level_data.
Fixes#312
Change-Id: I48857046c1ea4bed4f455d03d060551e3ef4bec8
Added new path to allow webvtt text input to be written as
webvtt mp4. This will happen when the input is a vtt file and
the output path is a mp4 path or the output format is mp4.
Missing test content for this.
Close: 70990714
Change-Id: Idbb4023db4a126a560528e73801f762cc45f4685
Moved muxer listener creation into a factory so that it can be
initialized once and then the factory only needs to be passed
around rather than all the parameters.
Change-Id: Ibf7df66c08debddbe6f6ff8995e7910b9ad17f3f
Use a mock muxer listener so that we can verify that the webvtt
output handlers will write to a manifest correctly.
Change-Id: I0294a998bfaf06a6d8f7d4c287fb014839b38f73
To remove the direct dependencies between packager.cc and the different
muxer implementations, this change remove the muxer factory to its
own file.
Change-Id: I4a1503c493f0f4d10a67e78461f96da3f4238944
Connected the WebVtt Pipeline together to test that the parser,
segmenter, and output all work together as expected.
Change-Id: I07138f7b5b1318f84c27c5b607d8df207c57ddb3
Also added Period::GetAdaptationSets and
AdaptationSet::GetRepresentations.
Instead of implementing GetDurationSeconds in all MpdBuilder classes
(MpdBuilder/Period/Adaptation/Representation) like what we used to do
with GetEarliestTimestamp, the two new functions allows MpdBuilder to
iterate through the Representations to get durations.
Also updates GetEarliestTimestamp functions to use the same iteration
method.
Change-Id: I682b70c07c248c0f6511ec3d9019086f986ee10e
Linked together all the handlers to create the HLS text pipeline.
This change does not include tests for the pipeline.
Bug: 36138902
Change-Id: I32e7a7cefae1e7c74ec6d0bdc6335c0d65e5e79c
Changed muxer listener to use "default" instead of {}
when defining its constructor and destructor in its
header file.
Change-Id: I3c80e808aa624293c3d7720ac6a47b470a663312
This change adds the missing code for passing mp4 text through
the pipeline.
This introduces the MuxerFactory to simplify creating muxers.
Change-Id: Ic7be1a2e0ff4b720a01061edb43aded946d05a47
- Update curl to 7.57.0
- Roll clang, which is needed due to MacOS / XCode update
- Fixes and suppress compilation errors due to clang update
Fixes#285
Change-Id: Ibac3288c641861605c3c0500d34d27373e6eecfe
This change introduces handlers to output WebVtt text files. There is
only one output but there is a common base to support others.
WebVttOutputHandler which handles all communication with other handlers
and WebVttSegmentedOutputHandler is responsible for listening for events
and choosing when and where to write cues and headers.
Bug: 36138902
Change-Id: I2b13a94262554398e66fee8cf024aa21041ddbab
Instead of having multiple char readers, one for strings and
one for files, just have one for files and use memory files
when testing.
Change-Id: Id1a2230046ba540ddf69ca10edb3edc74d2419b6
To better align with the Chunking Handler, the Text Segmenter
now outputs the SegmentInfo at the end of the segment rather
than the start.
Change-Id: If69ab951947d00779b4b63a52c4b6662bbdc4c0d
Move AdaptationSet related functions to the new Period class, which
maps to <Period> element and provides methods to add AdaptationSets.
Change-Id: I0fee290769fbe9a6355cc1b8c86baec8fbc4b4fd
Clean up DashIopMpdNotifier to make it easier to add Period class.
- Consolidate protected AdaptationSet grouping related logic to the
internal ProtectedAdaptationSetMap class
- Clean up AdaptationSet creation logic and updating logic
Change-Id: Idd5b39bb89d38e490ca4f561a6b840ccc9f1e40a
Implemented a MediaHandler that takes text samples and creates
media samples. The data in each media sample is the MP4 box for
non-overlapping cues.
As per WebVtt in Mp4, all cues must be non-overlapping. This handler
takes care of grouping and dividing cues.
Bug: 36138902
Change-Id: I0c1d27964180c14a22cb200591f70e46e04a651f
- Add --time_shift_buffer_depth to HLS doc.
- Fix a problem in HLS tutorial
Partially address #304, fixes#305
Change-Id: I60bc1eb659a30beb0a6ab73433f4cc99a7deab07
This change creates the webvtt segmenter which will be used for
segmented text webvtt for HLS. It takes a stream of text samples
and injects segment info messages based on the segment duration.
It is possible for samples to extend between segments, if so the
sample will appear twice (once in each segment).
Change-Id: Iae0134ee61cf269948026086520b6d3f8ce3785b
Took the WebVTT Media Parser and created the WebVTT Parser
that will take in a file and output a stream of cues that
will later be passed to another Media Handler that takes in
cues and chunks them.
Bug: 36138902
Change-Id: Ic77813fe19678e85d500269e69f46917510ab7ec
Moved from mpd_unittest.cc to representation_unittest.cc.
Also removed unused test data files in packager/mpd/test/data.
Change-Id: I23811390b4b1ffbfac3e69c1ffcf92544099a53d
Move AdaptationSet related tests to adaptation_set_unittest.cc and
Representation related tests to representation_unittest.cc.
Change-Id: I360e9aea3ba08a32e5ba3b0e8b34345f2b3f0b20
Added gMock matchers for matching xmlNodePtr and its attributes.
Clean up mpd_unittests to make it easier to separate adaptation set
tests and representation tests.
Change-Id: I31816b06e9c76f92d4a82656c659f3b9acae8cb5
Moved all code dealing with jobs into its own class so that the
packager code does not need to worry about initializing, running,
or stopping jobs.
Change-Id: I3e9ef1f22bd93d671f77d59ad15f23d1239078cf
As specified in HLS spec (https://tools.ietf.org/html/rfc8216):
All audio EXT-X-MEDIA tags SHOULD have a CHANNELS attribute. If a
Master Playlist contains two Renditions encoded with the same
codec but a different number of channels, then the CHANNELS
attribute is REQUIRED; otherwise, it is OPTIONAL.
Fixes#299
Change-Id: Ic2308c39b170178b11cb0d94c3a8083c8b5f3353
Seeing some failures on some platforms when compiled with clang
disabled:
GYP_DEFINES="clang=0" gclient runhooks
Several changes to make it work:
1. Mark packager code with packager_code=1 in GYP definitions.
2. Disable a few checks in non-packager code, which we do not have
direct control: dangling-else, deprecated-declarations,
unused-function
3. Fix the relevant errors in packager code.
4. Revert HAVE_STROPTS_H in curl config which is not available in
all linux distributions.
Fixes#286Fixes#293
Change-Id: I729b41f99403c5ad9487c6cc4a7dc06f6323cef8
1. Expect the time elapsed to be greater than kTimeout instead of
approximately equal to kTimeout if there is a "wait";
2. Expect the time elapsed to be smaller than kTimeout instead of
approximately equal to 0 if there is no "wait".
Also rename a variable in packager.cc to better reflect what it is.
Change-Id: I67975a6263b8dbc1124b78feae0f8e0d112bda50
It aligns with what a lot of other apps are doing, e.g. tsplay.
Also added notes in docker to adjust network setting if wants to use
multicast in docker container.
Change-Id: I666a8979cc041c904f7ff8e3e022f800c0830d5d
The error is logged only once to avoid log spamming.
Added definitions for the unsupported stream types for easy look up.
Change-Id: I097e2f05759bc84ef03f264cfabd2fb20da7c711
This patch also fixes a bug which was introduced in
https://widevine-internal-review.googlesource.com/c/packager/+/38040
where it was inconsistently assumed that AdCueGenerator would be MIMO
while connecting with other handlers and at the same time it was assumed
SISO in the AdCueGenerator class. Now we assume SISO everywhere.
Change-Id: Icd8c40b5ccfe0d98f47f09a60ea1635f74dceef9
The spec allows having more than one 'mdat' boxes even if it is not
used.
This is happening on some mp4 files in the wild:
http://www.sample-videos.com/.
Fixes#298.
Change-Id: I729cc94bee095560b5c4b3ee8511323f25f7ad5a
Implemented E-AC3 MPEG-2 Stream Encryption Format for HTTP Live
Streaming specified in https://goo.gl/1sgcwY
Issue #279
Change-Id: I36c1a05e3d0529ff810eaf52bdca45414baa93eb
Audio samples per frame for AC3 was not specified correctly earlier.
Also the number of channels is not correct if LFE channel is on.
Issue #165
Change-Id: Ibf20aa4c7aec43c07ec7cd394d631c537cb387dd
Implemented MPEG-2 Stream Encryption Format for HTTP Live Streaming
specified in https://goo.gl/N7Tvqi.
This change also moved ProgramMapTableWriter creation from TsWriter
to TsSegment.
Issue #165
Change-Id: Ia89dd16a5e6405706dd3d85ec6b6de580f7b13a7
KongQun Yang
Aaron Vaage
Michael Stillwell
Haoming Chen
Kamesh Devarakonda
l-law