Fix transcoding problem when using 10.8 server

[neilsb]

In the current device profile, we specify that we support h264 profile level up to 5.1, whereas the Roku specification says they only support 4.0,4.1. In in the 10.7 releases, the maximum Profile Level the server would use was 4.1.

@nyanmisaka explained that hardware decoders may be able to decode higher profile levels but with some quality implications (e.g. 5.2 may play on 4.x hardware with macroblock artifacts). This seems to be the case with Roku when Direct Playing, but when transcoding the device will have more strict checking using the info from the play, so will just refuse to play.

In order to allow a user to reduce transcodes, and attempt direct play of videos where the only reason for transcoding is an unsupported profile level, a user setting was added. If the direct play fails, the transcoding url will be used instead.

Changes

• Update Device Profile to correctly set max supported h264 profile level to 4.1
• Add user option to allow user to attempt to direct play h264 media where only the Profile Level is compatible.
• Add logic in Video Player to force direct play in cases when user setting is true, and video is only transcoding due to profile level
• Add logic in Main for when video ends, to replay video using Transcoding if requested

Issues
fixes #670 #651

[1hitsong]

Tried several files that previously failed and all played without issue.

[whiteowl3]

in deviceCapabilities.brs, the "Value" of the "hevc" "VideoLevel" needs to be the float multiplied by 30, in my tests.
https://stackoverflow.com/questions/69983131/whats-the-difference-between-ffprobe-level-and-h-264-level
such as

{
                "Type": "Video",
                "Codec": "hevc",
                "Conditions": [
                    {
                        "Condition": "EqualsAny",
                        "Property": "VideoProfile",
                        "Value": "high|main",
                        "IsRequired": false
                    },
                    {
                        "Condition": "LessThanEqual",
                        "Property": "VideoLevel",
                        "Value": StrI(5.1*30),
                        "IsRequired": false
                    }
                ]
            }

but, to be clear, this has NOT fixed transcoding on my infra. it only avoids transcoding everywhere it can. when something still must transcode, it still failing for me on 10.8.x
other parts of my infra caused this, transcoding is working as expected with these changes.

[whiteowl3]

some of my subtitle changes are also required to prevent the erroneous transcoding, but im not sure which ones. probably just ass/ssa profiles of either embed/external type would be sufficient.

[neilsb]

in deviceCapabilities.brs, the "Value" of the "hevc" "VideoLevel" needs to be the float multiplied by 30

Good catch, thanks. Updated.

[cewert]

I had one file that wouldn't play because it needed transcoding that now plays fine with this PR. I also played a bunch of random files that needed transcoding and they all played as expected.

My setup is pretty simple though: local only server, 1080p TV, and a 2.1 soundbar.

[1hitsong]

Left a comment in the chat, but will put it here for a paper trail.

I tested this again on the files I had problems with and everything worked without issue.

[funkybunch]

Upon merge I believe this also fixes #694