joeyparrish fix: Roll back depot_tools, bypass vpython (#1045 )

fix: Roll back depot_tools, bypass vpython (#1045 )

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

3fd538a

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README.md

Shaka Packager is a tool and a media packaging SDK for DASH and HLS packaging and encryption. It can prepare and package media content for online streaming.

Shaka Packager supports:

Both Video-On-Demand and Live.
Streaming formats:
- DASH
- HLS
Key systems:
- Widevine
- PlayReady¹
- FairPlay¹
- Marlin¹
Encryption standards:
- CENC
- SAMPLE-AES

Media Containers and codecs

Codecs	ISO-BMFF	WebM	MPEG2-TS	WVM	Packed Audio²
H264 (AVC)	I / O	-	I / O	I	-
H265 (HEVC)	I / O	-	I	-	-
VP8	I / O	I / O	-	-	-
VP9	I / O	I / O	-	-	-
AV1	I / O	I / O	-	-	-
AAC	I / O	-	I / O	I	O
MP3	O	-	I / O	-	O
Dolby AC3	I / O	-	I / O	-	O
Dolby EAC3	I / O	-	O	-	O
MPEG-H Audio	I / O	-	-	-	-
Dolby AC4	I / O	-	-	-	-
DTS	I / O	-	-	-	-
FLAC	I / O	-	-	-	-
Opus	I / O³	I / O	-	-	-
Vorbis	-	I / O	-	-	-

NOTES:

I for input and O for output.
²: https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-3.4
³: Opus support in ISO-BMFF is experimental.

Subtitles

Format Input Output

Text WebVTT Y Y

WebVTT in MP4 #405 Y

Text TTML ⁴ Y

TTML in MP4 - Y

DVB-SUB Y -

Teletext #272 -
- ⁴: TTML input is only supported with TTML output (pass-through, DASH only), see also #584.

Platforms
- Linux
- Mac
- Windows
- Cross compiling for ARM is also supported.

^{1: Limited support}

Getting Shaka Packager

There are several ways you can get Shaka Packager.

Using Docker. Instructions are available here.
Get prebuilt binaries from release.
Built from source, see Build Instructions for details.

Useful Links

Announcement List (join for release announcements and surveys)
Documentation
Tutorials
Several open source players:

Contributing

If you have improvements or fixes, we would love to have your contributions. See https://github.com/shaka-project/shaka-packager/blob/main/CONTRIBUTING.md for details.

About

A media packaging and development framework for VOD and Live DASH and HLS applications, supporting Common Encryption for Widevine and other DRM Systems.

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