Set the start number in representation to the segment index that is sent by muxer.
With this enhancement, you can now specify the initial sequence number
to be used on the generated segments when calling the packager.
With the old implementation, it was always starting with "1".
---------
Co-authored-by: Cosmin Stejerean <cstejerean@meta.com>
This adds the option FULLY_STATIC to create fully-static executables.
To create portable, fully-static release executables on Linux, we need
to use musl instead of glibc. Static executables from glibc are not
portable.
The popular musl-gcc wrapper does not support C++, so instead we use a
full musl cross-compiler toolchain in the build workflow.
To build FULLY_STATIC, the user must point to the appropriate
cross-compiler, as we do in the workflow. On systems where musl is the
native libc (such as Alpine Linux), this is not necessary.
I have also read that musl's allocator is not very fast in
multi-threaded applications. So when FULLY_STATIC is enabled, we will
also enable mimalloc, a replacement allocator that is very fast.
I tested a very basic packaging command to compare speeds of dynamic
glibc, static musl, and static musl+mimalloc:
dynamic glibc:
runs: 2.527, 2.798, 2.703, 2.756, 2.959
avg = 2.749, std dev = 0.156s
static musl:
runs: 2.813, 2.920, 3.129, 3.003, 2.738
avg = 2.921s, std dev = 0.154s
static musl+mimalloc:
runs: 2.291, 2.034, 2.415, 2.303, 2.265
avg = 2.262s, std dev = 0.140s
The mimalloc build is 82% faster than musl default allocator, 77% faster
than glibc, and has more consistent runtime characteristics (lower
standard deviation).
An updated version of PR #1027
That previous PR was done using 2021 code, and there were many changes
in the codebase from there, so a rebase was needed and also some minor
tweak here and there. But it's the same code, just reimplemented on a
newer codebase.
If you want to take a look at this in action, after building shaka
packager with this PR's code included, try this commands in 3 different
simultaneous bash sessions:
1. Video UDP input: `ffmpeg -f lavfi -re -i
"testsrc=s=320x240:r=30,format=yuv420p" -c:v h264 -sc_threshold 0 -g 30
-keyint_min 30 -r 30 -a53cc 1 -b:v 150k -preset ultrafast -r 30 -f
mpegts "udp://127.0.0.1:10000?pkt_size=1316"`
2. WebVTT UDP input: `for sec in $(seq 0 9999) ; do printf
"%02d:%02d.000 --> %02d:%02d.000\ntest second ${sec}\n\n" "$(( ${sec} /
60 ))" "$(( ${sec} % 60 ))" "$(( (${sec} + 1) / 60 ))" "$(( (${sec} + 1)
% 60 ))" ; sleep 1 ; done > /dev/udp/127.0.0.1/12345`
3. shaka packager command line: `timeout 60
path/to/build/packager/packager
'in=udp://127.0.0.1:10000?timeout=8000000,stream_selector=0,init_segment=240_init.m4s,segment_template=240_$Number%09d$.m4s,bandwidth=150000'
'in=udp://127.0.0.1:12345?timeout=8000000,stream_selector=0,input_format=webvtt,format=webvtt+mp4,init_segment=text_init.m4s,segment_template=text_$Number%09d$.m4s,language=eng,dash_roles=subtitle'
--mpd_output ./manifest.mpd --segment_duration 3.2
--suggested_presentation_delay 3.2 --min_buffer_time 3.2
--minimum_update_period 3.2 --time_shift_buffer_depth 60
--preserved_segments_outside_live_window 1 --default_language=eng
--dump_stream_info 2>&1`
Note the added `input_format=webvtt` to the shaka packager command's
second selector. That's new from this PR. If you don't use that, shaka's
format autodetection will not detect the webvtt format from the input,
as explained in
https://github.com/shaka-project/shaka-packager/issues/685#issuecomment-1029407191.
Try the command without it if you want to.
Fixes#685Fixes#1017
---------
Co-authored-by: Daniel Cantarín <canta@canta.com.ar>
Replaces #1181
* Add support for EBU Teletext input following Level 1.5 of the core
specification ETSI EN 300 706 V1.2.1 (2003-04).
* Add support for webvtt in MP4 segments output.
Closes#272
---------
Co-authored-by: Marcus Spangenberg <marcus.spangenberg@eyevinn.se>
adds an optional `--hls_start_time_offset` parameter, that, when
used, adds `EXT-X-START` tags to the HLS media playlists.
The EXT-X-START tag allows to specify the location where the player
starts playing, either from start (positive value) or from end (negative
value).
This is especially useful in case of livestreams where this tag can be
used to set the target latency of the playback.
Reference: https://datatracker.ietf.org/doc/html/rfc8216#section-4.3.5.2
The RFC says, that the `EXT-X-START` tag could also be added to the
master playlist, but my tests have shown that most players only respect
it when it's in the media playlists.
Fixes#970
---------
Co-authored-by: Joey Parrish <joeyparrish@google.com>
According to a comment in
packager/third_party/abseil-cpp/source/absl/log/CMakeLists.txt, many
linkers will strip the contents of absl::log_flags because its symbols
symbols are only used in a global constructor, and that for now, clients
should link using
$<LINK_LIBRARY:WHOLE_ARCHIVE,absl::log_flags>.
Closes#1325
Add ability to set `Label` tag in MPD, see page 35 of DASH-IF IOP 4.3
https://dashif.org/docs/DASH-IF-IOP-v4.3.pdf
Implements #881
---------
Co-authored-by: Cosmin Stejerean <cstejerean@meta.com>
This will force the muxer to order streams in the order given on the
command-line.
Closes#560Closes#1280Closes#1313
---------
Co-authored-by: Joey Parrish <joeyparrish@users.noreply.github.com>
Co-authored-by: Cosmin Stejerean <cstejerean@meta.com>
This work was done over ~80 individual commits in the `cmake` branch,
which are now being merged back into `main`. As a roll-up commit, it is
too big to be reviewable, but each change was reviewed individually in
context of the `cmake` branch. After this, the `cmake` branch will be
renamed `cmake-porting-history` and preserved.
---------
Co-authored-by: Geoff Jukes <geoffjukes@users.noreply.github.com>
Co-authored-by: Bartek Zdanowski <bartek.zdanowski@gmail.com>
Co-authored-by: Carlos Bentzen <cadubentzen@gmail.com>
Co-authored-by: Dennis E. Mungai <2356871+Brainiarc7@users.noreply.github.com>
Co-authored-by: Cosmin Stejerean <cstejerean@gmail.com>
Co-authored-by: Carlos Bentzen <carlos.bentzen@bitmovin.com>
Co-authored-by: Cosmin Stejerean <cstejerean@meta.com>
Co-authored-by: Cosmin Stejerean <cosmin@offbytwo.com>
This brings some workflow improvements and fixes from the `cmake` branch
to `main`, as well as some unique fixes to keep gclient working, so that
we can continue to accept contributions in `main` until the `cmake`
merge is ready.
- Fix docs build in GitHub Actions (from `cmake` branch)
- Cancel workflow when a PR is updated (from `cmake` branch)
- Fix docker failures caused by running as root (from `cmake` branch)
- Work around exception in depot_tools on Windows
- Use Windows 2019 images in GitHub Actions for compatibility with gyp
- Remove Docker build on ArchLinux, which no longer supports python2 at
all
- (NOTE: The `cmake` branch is still building on ArchLinux. Docker
builds for Arch will be restored to the `main` branch when the `cmake`
branch is finally merged to `main`.)
Using the latest depot_tools no longer works. depot_tools also wants
to auto-update itself, which must now be disabled.
We also need to disable the copy of python (vpython) included in
depot_tools, since for some distros, it has dependencies on system
libraries that no longer exist.
Finally, we need to force some distros to use python 2, because our
build system is ancient and needs to be ripped out and replaced some
day soon.
This fixes build issues in our CI, our Dockerfiles, and in general on
certain platforms or distros.
Closes#1023
The official, static-linked linux builds were crashing in their use of
getaddrinfo, which libcurl was configured to use. Both getaddrinfo
and all of its alternatives available in glibc fail with static
linking.
We can fix this by configuring libcurl to use libc-ares on Linux
instead. This allows us to keep the benefits of a statically-linked
Linux binary.
Closes#996
Change-Id: Ib4a9eb939813fd165727788726459ef4adf3fc4d
This updates the main Dockerfile and all the docker-based
distro-specific tests. The base OS versions have been updated to
versions that have not reached end-of-life status yet, and the list of
dependencies required has been updated and pruned.
Change-Id: Ibcff2f60e739fd5d999af100af76c40aa91a75bc
# LL-DASH Support
These changes add support for LL-DASH streaming.
**NOTE:** LL-HLS support is still in progress, but it's coming. :)
## Testing
`./chunking_unittest --gtest_filter="ChunkingHandlerTest.LowLatencyDash"`
`./media_event_unittest --gtest_filter="MpdNotifyMuxerListenerTest.LowLatencyDash"`
`./mpd_unittest --gtest_filter="PeriodTest.LowLatencyDashMpdGetXml"`
`./mpd_unittest --gtest_filter="SimpleMpdNotifierTest.NotifyAvailabilityTimeOffset"`
`./mpd_unittest --gtest_filter="SimpleMpdNotifierTest.NotifySegmentDuration"`
`./mpd_unittest --gtest_filter="LowLatencySegmentTest.LowLatencySegmentTemplate"`
Note, packager_test must be run from the main project directory
`./out/Release/packager_test --gtest_filter="PackagerTest.LowLatencyDashEnabledAndUtcTimingNotSet"`
`./out/Release/packager_test --gtest_filter="PackagerTest.LowLatencyDashEnabledAndUtcTimingNotSet"`
The newest pylint release complained about several issues that the
older release did not. This resolves those issues:
- removes unneeded "u" prefix from strings
- adds "encoding" parameter for all open() calls
- because "encoding" is a python3-only parameter, use python3 in all
the scripts that we control
Unfortunately, python2 is required for any scripts that import modules
from the ancient Chromium build system we're using (referenced by
DEPS), as well as kokoro scripts.
Change-Id: I2e9f97af508efe58b5a71de21740e59b1528affd
This brings our default build config more in line with what is
necessary for some platforms anyway: using the system-installed
toolchain and sysroot to build everything.
We will no longer fetch source or binaries for any specific build
tools, such as libc++, clang, gold, binutils, or valgrind.
The main part of this change is the changing of default gyp settings
in gyp_packager.py. For this, a bug in gyp_packager.py had to be
fixed, in which similar GYP_DEFINE key names (such as clang and
host_clang) would conflict, causing some defaults not to be installed
properly.
In order to enable clang=0 by default, some changes had to be made in
common.gypi:
- compiler macros added to fix a compatibility issue between
Chromium's base/mac/ folder and the actual OSX SDK
- replaced clang_warning_flags variables with standard cflags
settings, plus xcode_settings for OSX
- turned off warnings-as-errors for non-shaka code, rather than
allow-listing specific warning types, since we can't actually fix
those warnings on any platform
- disabled two specific warnings in shaka code, both of which are
caused by headers from our non-shaka dependencies
Also, one warning (missing "override" keyword) has been fixed in
vod_media_info_dump_muxer_listener.h.
Although these changes were done to make building simpler on a wider
array of platforms (arm64, for example), it seems to make the build a
bit faster, too. For me, at least, on my main Linux workstation:
- "gclient sync" now runs 20-30% faster
- "ninja -C out/Release" now runs 5-13% faster
The following environment variables are no longer required:
- DEPOT_TOOLS_WIN_TOOLCHAIN
- MACOSX_DEPLOYMENT_TARGET
Documentation, Dockerfiles, and GitHub Actions workflows have been
updated to reflect this.
The following GYP_DEFINES are no longer required for anyone:
- clang=0
- host_clang=0
- clang_xcode=1
- use_allocator=none
- use_experimental_allocator_shim=0
Documentation, Dockerfiles, and GitHub Actions workflows have been
updated to reflect this.
The following repos are no longer dependencies in gclient:
- binutils
- clang
- gold
- libc++
- libc++abi
- valgrind
The following gclient hooks have been removed:
- clang
- mac_toolchain
- sysroot
Change-Id: Ie94ccbeec722ab73c291cb7df897d20761a09a70
At this point static_library builds are working in MSVS 2019. shared_library builds are still not working.
Closes#867 (MSVS 2019)
Issue #318 (progress toward shared_library support on Windows)
Issue #336 (progress toward replacing Travis & Appveyor with GitHub Actions, which uses MSVS 2019)
b/190743862 (internal; tracking replacement of Travis)
For windows running `GYP_DEFINES='target_arch=X64'` shows an error GYP_DEFINES is
not recognized as an internal or external command.
The actual command is to set the value of GYP_DEFINES. so it should be
`SET GYP_DEFINES='target_arch=X64'`.
This also allows setting the language of different text streams from
the same input. Multiple streams can use the same input stream
using different cc_index values and can each use a different language.
This also will try to pull the language from the input if not
specified.
Change-Id: I7078710b509b7d77dad8cb4299a82f954af7e9e7
Issue #149
Co-authored-by: Andreas Motl <andreas.motl@elmyra.de>
Co-authored-by: Rintaro Kuroiwa <rkuroiwa@google.com>
Co-authored-by: Ole Andre Birkedal <o.birkedal@sportradar.com>
I.e. the flag --generate_sidx_in_media_segments,
--nogenerate_sidx_in_media_segments work for both single-segment
and multi-segment mode with this change.
Related to #862.
Change-Id: Icd27fd00e8e036ba0c4709b48650372429cc0351
Added --crypt_byte_block, --skip_byte_block to allow users to specify
protection pattern other than 1:9 for pattern based encryption scheme,
e.g. cbcs and cens.
Closes#710.
b/147307451
Change-Id: I9f64a7639170c737f138572689b28d17286325c7
HLS uses the EXT-X-MEDIA-SEQUENCE tag at the start of a live playlist in
order to specify the first segment sequence number. This is because any
live playlist have a limited number of segments, and they also keep
updating with new segments while removing old ones. When a player refreshes
the playlist, this information is important for keeping track of segments
positions.
When the packager starts, it naturally starts this count from zero. However,
there are many situations where the packager may be restarted, without this
meaning starting this value from zero (but continuing a previous sequence).
The most common situations are problems in the encoder feeding the packager.
With those cases in mind, this parameter allows to set the initial
EXT-X-MEDIA-SEQUENCE value. This way, it's possible to continue the sequence
number from previous packager run.
Closes#691.
Add dash_accessibilities stream descriptor, which is a semi-colon
separated list of accessibility_scheme_id_uri=value. It is optional.
Add dash_roles stream descriptor, which is a semi-colon separated
list of strings. It is optional.
Closes#565.
Change-Id: Idb1c20bb410fdd016db07e11fe507c102a3dd8ea
VLC seems to generate access units with extra AUDs. In #526, the below
sequence is seen:
AUD | SPS | PPS | SPS | PPS | AUD | SEI | SEI | SEI | IDR_SLICE
Previously we exit early when seeing AUD, which results in delayed
processing of the access unit.
The behavior is changed to continue processing the following NAL units
to workaround the content issue.
Closes#526.
Change-Id: I80f571c0711c6db1337eb393fce36fae5432b6c5
It allows users to override the default language for text tracks.
If not specified, --default_language applies to both audio and text
tracks.
Issue #430.
Change-Id: I86a9baba2072be27b6661fa7b65a8bc8b6adb3cc
Add hls_characteristics stream descriptor, which is a colon or semi-colon
separated list of strings. It is optional.
Fixes#430.
Change-Id: Ifcf79316e68768ff065891933de565cd0ff32ec4
sr90
Cosmin Stejerean
Joey Parrish
Daniel Cantarín
Cosmin Stejerean
Marcus Wichelmann
Vishal Shah
SteveR-PMP
Dennis E. Mungai
Joey Parrish
Caitlin O'Callaghan
KongQun Yang
Suraj kumar (sk)
Jacob Trimble
Alen Vrečko
Ole Andre Birkedal
Joe Foraci
Widevine Buildbot
Tomohiro IKEDA
Herlon Aguiar