Adding a new stream to m3u8

[PyRo1509]

When making multiple resolutions serially the m3u8 has to be updated manually.

case: 1080p, 720p, 480p videos are going to be encoded serially
First the 480p and audio is available.
Create TS and m3u8's.

Once the 720P or 1080P version is complete a separate master m3u8 needs to be created and then manually merged.

Adding the same master playlist file to packager should update it rather than overwrite.

---

Current Behavior:

packager 'input=Audio.mp4,stream=audio,segment_template=audio_$Number%04d$.ts,playlist_name=audio_playlist.m3u8' \
'input=480p.mp4,stream=video,segment_template=480_Video_$Number%04d$.ts,playlist_name=480_playlist.m3u8' \
--hls_master_playlist_output="master_playlist.m3u8"

packager 'input=240p.mp4,stream=video,segment_template=240_Video_$Number%04d$.ts,playlist_name=240_playlist.m3u8' \
--hls_master_playlist_output="master_playlist.m3u8"

master_playlist.m3u8:

#EXTM3U
## Generated with https://github.com/google/shaka-packager version a4c227f-release
#EXT-X-STREAM-INF:BANDWIDTH=768856,CODECS="avc1.640015",RESOLUTION=576x240
240_playlist.m3u8

Requested Result:
master_playlist.m3u8:

#EXTM3U
## Generated with https://github.com/google/shaka-packager version a4c227f-release
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="stream_2",LANGUAGE="en",URI="audio_playlist.m3u8"
#EXT-X-STREAM-INF:BANDWIDTH=3087383,CODECS="avc1.64001f,mp4a.40.2",RESOLUTION=1152x480,AUDIO="audio"
480_playlist.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=969977,CODECS="avc1.640015,mp4a.40.2",RESOLUTION=576x240,AUDIO="audio"
240_playlist.m3u8

[kqyang]

That is an interesting use case. Any reason that you don't do packaging after all streams ready?

[PyRo1509]

@kqyang It's just a matter of resources available (both CPU & HD). I encode each resolution serially to have something available as soon as possible (Much like youtube). Sometimes it might be a while between new resolutions. This is going to be much more of a problem as I'm starting to add VP9 content.

It requires that the input resolution files be kept around (wasted space on HD). So each new resolution I get I'd have to reprocess the past ones as well.

Currently I just have a script add the new resolutions.

it'd be nice if packager took care of it. Maybe:

packager 'input=240p.mp4,stream=video,segment_template=240_Video_$Number%04d$.ts,playlist_name=240_playlist.m3u8' --add-stream  "master_playlist.m3u8"