Can't make sidecar pts and cue to working as expected about scte-35_hls_x9k3 HOT 10 CLOSED

Merry Christmas and let me say,
that is a solid description of the issue, with supporting details, I appreciate it.

let me show you an easier way to check iframes
https://github.com/futzu/iframes

a@fu:~/x9k3_help_needed$ iframes segment11.ts 
66.191111
67.191111
68.191111
69.191111
70.191111
71.191111

You do understand that a time signal needs a segmentation descriptor to generate a CUE-OUT tag, right?

what you're saying is reasonable, and I'm not sure why it's not behaving that way.
let me think on this for a minute,

from scte-35_hls_x9k3.

Man, I think you just gave me a great idea. Currently, when x9k3 encounters an iframe, it makes segment level decisions.
what I'm thinking I need ot do is make those segment level decisions, iframe level decisions and simplify what happens at the segment level to just slicing. ...... I am talking to myself here.
Give me the weekend, and I can probably sort this out.,

from scte-35_hls_x9k3.

You do understand that a time signal needs a segmentation descriptor to generate a CUE-OUT tag, right?

I am new to SCTE35 so at the moment i am try to learn as more as i can. from your scte35-threefive example
i found some SCTE35 encoding code. i use the encode_time_signal.py example to create the SCTE35 signal which i believe it doesn't containers descriptor. will explore more from your example to see how i add segmentation descriptor.

from scte-35_hls_x9k3.

Hi Adrian

really appreciate your time and help during the new year time!

let me explain the work i am facing, after hls video being created, we need allow people to change and update the cue point at the any position. it is hard we don't want re-encode the whole video. so we decide to use 1 iframe interval. at the moment we use ffmpeg to split the video and re-assembly the hls manifest with discontinuity tag.
seem working but it is not good solution.

until i meet with the x9k3, it allow us to remove the discontinuity tag, it is really something i have been looking
long time if it can sub-segment a segment into 2 segments with user control the duration of first sub-segment and rest duration all for second sub-segment.

Curious from the readme
Segments are cut on iframes.
if we don't have 1s iframe interval video. x9k3 wan't do second accuracy splicing. it will splice at the nearest iframe position right?

thanks

from scte-35_hls_x9k3.

I use your iframe finder, it is much quicker than ffprobe

from scte-35_hls_x9k3.

v0.2.39 should work correctly .
FYI if you want 6 second segments use -t 6

a@fu:~/x9k3_help_needed$  x9k3 -i segment11.ts -s sidecar.txt -t 6
loading  68.191111,/DAlAAAAAAAAAP/wFAUAAAADf+/+AF2lcP4ABX5AAAMAAAAAORYtAQ==
{
    "info_section": {
        "table_id": "0xfc",
        "section_syntax_indicator": false,
        "private": false,
        "sap_type": "0x3",
        "sap_details": "No Sap Type",
        "section_length": 37,
        "protocol_version": 0,
        "encrypted_packet": false,
        "encryption_algorithm": 0,
        "pts_adjustment_ticks": 0,
        "pts_adjustment": 0.0,
        "cw_index": "0x0",
        "tier": "0xfff",
        "splice_command_length": 20,
        "splice_command_type": 5,
        "descriptor_loop_length": 0,
        "crc": "0x39162d01"
    },
    "command": {
        "command_length": 20,
        "command_type": 5,
        "name": "Splice Insert",
        "time_specified_flag": true,
        "pts_time": 68.191111,
        "pts_time_ticks": 6137200,
        "break_auto_return": true,
        "break_duration": 4.0,
        "break_duration_ticks": 360000,
        "splice_event_id": 3,
        "splice_event_cancel_indicator": false,
        "out_of_network_indicator": true,
        "program_splice_flag": true,
        "duration_flag": true,
        "splice_immediate_flag": false,
        "unique_program_id": 3,
        "avail_num": 0,
        "avail_expected": 0
    },
    "descriptors": []
}

./seg0.ts:   start: 66.191111   end: 68.191111   duration: 2.000000
#EXT-X-CUE-OUT = 4.0
./seg1.ts:   start: 68.191111   end: 72.191111   duration: 4.000000

from scte-35_hls_x9k3.

The procedure your describing is not going to fix your CUE-OUT-CONT tags, and there are several other potential probl;ems. You'd probably be better off just changing the sidecar file and then just do the whole video with x9k3.
x9k3 can take the ffmpeg generated m3u8 file as input.

x9k3 -i ffmpeg_generated.m3u8   -t6  -o output_directory -s sidecar.txt

As far as encoding goes , if you can use a splice insert, you can use threefive.encode.mk_splice_insert
mk_splice_insert(event_id, pts=None, duration=None, out=False)

from threefive.encode import mk_splice_insert

# This is a CUE-OUT at 68.191111, for 60 seconds
cue-out= mk_splice_insert(event_id=1, pts =68.191111,duration=60.0,out=True).encode()
print(cue-out)
'/DAlAAAAAAAAAP/wFAUAAAABf+/+AF2lcP4AUmXAAAEAAAAAqY0bkg=='


# This is the CUE-IN
cue-in= mk_spice_insert(event_id=1, pts=128.191111,out=False).encode()
print(cue-in)
'/DAgAAAAAAAAAP/wDwUAAAABf0/+ALALMAABAAAAALhvRkU='

from scte-35_hls_x9k3.

try this to make your cues

adbreak.py.gz

• help

a@fu:~/x9k3_help_needed$ pypy3 adbreak.py -h
usage: adbreak.py [-h] [-d DURATION] [-p PTS] [-s SIDECAR]

optional arguments:
  -h, --help            show this help message and exit
  -d DURATION, --duration DURATION
                        duration of ad break [default: 60.0]
  -p PTS, --pts PTS     start pts for ad break [default: 0.0]
  -s SIDECAR, --sidecar SIDECAR
                        Sidecar file of SCTE-35 (pts,cue) pairs.
                        [default:sidecar.txt]

run it like :

python3 adbreak.py  -d 60 -p 68.191111 -s sidecar.txt

your sidecar will have the CUE-OUT and CUE-IN.

a@fu:~/x9k3_help_needed$ cat sidecar.txt
68.191111,/DAlAAAAAAAAAP/wFAUAAAABf+/+AF2lcP4AUmXAAAEAAAAAqY0bkg==  # CUE-OUT
128.191111,/DAgAAAAAAAAAP/wDwUAAAABf0/+ALALMAABAAAAALhvRkU=     # CUE-IN

x9k3 will make a CUE-OUT , all the CUE-OUT-CONT tags, and a CUE-IN.

from scte-35_hls_x9k3.

Hi Adrian
i tried the the latest change, now it works perfect for me, and the convenient script of adbreak.py make creating sidecar file easier. sometime i will try to do whole video with x9k3. looks the new update also fixed the last sub segment freezing in latest videojs http streaming player.

thanks for your help and the X9K3 project

Winston

from scte-35_hls_x9k3.

Sure man ,
you gave me what I needed, that makes it easy.

upgrade to 0.2.41, it's even better and adbreak installs with x9k3.

a@fu:~$ adbreak -h
usage: adbreak [-h] [-d DURATION] [-p PTS] [-s SIDECAR]

optional arguments:
  -h, --help            show this help message and exit
  -d DURATION, --duration DURATION
                        set duration of ad break. [ default: 60.0 ]
  -p PTS, --pts PTS     set start pts for ad break. Not setting pts will
                        generate a Splice Immediate CUE-OUT. [ default: 0.0 ]
  -s SIDECAR, --sidecar SIDECAR
                        Sidecar file of SCTE-35 (pts,cue) pairs. [ default:
                        sidecar.txt ]
a@fu:~$ 

from scte-35_hls_x9k3.