a4c357b992
A single-line change on #L170 to `wv.protection_scheme =
struct.unpack('>L', bytes(protection_scheme, encoding='utf-8'))[0]`,
needed to work around this issue on Ubuntu 22.04LTS+ running Python
3.10+:
```sh
TypeError: a bytes-like object is required, not 'str'
```
On line 170.
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| .. | ||
| README.md | ||
| pssh-box.py | ||
README.md
pssh-box - Utility to parse and generate PSSH boxes
Prerequisite
- Python 2.6 or newer.
Build the utility using Shaka Packager build setup
The utility needs to be built before being used, i.e. do not use the script in
packager/tools/pssh/pssh_box.py directly.
If you have not set up the build environment for Shaka Packager, see https://github.com/shaka-project/shaka-packager/blob/master/docs/source/build_instructions.md.
With the build environment set up, use ninja to build the utility:
$ ninja -C out/Release pssh_box_py
Then you can use the built utility in out/Release/pssh_box.py. You can add
out/Release to your PATH so you can run it from anywhere.
Usage
All examples below assume that that pssh-box.py is in the PATH variable of
the executing shell.
PSSH box generation
The utility can be used to generate one or more PSSH boxes.
An example to generate a Widevine PSSH with content-id 1234:
$ pssh-box.py --widevine-system-id --content-id 1234
It can be also be used to generate PSSH box from PSSH data (base64), e.g.
$ pssh-box.py --widevine-system-id --pssh-data AAAABCICEjQ=
The output can be in base64 form (--base64), in hex form (--hex) or in human
readable form (--human). Human readable form is the default.
An example to generate a Widevine PSSH with content-id 1234 in hex:
$ pssh-box.py --widevine-system-id --content-id 1234 --hex
Multiple boxes can be generated by separating boxes with --.
An example to generate concatenated PSSHs with a Widevine PSSH with content-id 1234 and a common PSSH with key-id 31323334353637383930313233343536 (hex form).
$ pssh-box.py \
--widevine-system-id --content-id 1234 -- \
--common-system-id --key-id 31323334353637383930313233343536
PSSH box parsing
The utility can be used to parse a single PSSH box or multiple concatenated PSSH boxes. The input can be in hex or in base64.
$ pssh-box.py --from-hex \
000000247073736800000000EDEF8BA979D64ACEA3C827DCD51D21ED0000000422021234
$ pssh-box.py --from-base64 AAAAJHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAAQiAhI0
More options
Run the utility with no arguments to see the full list of options.
$ pssh-box.py