Containers shouldn't affect transcoding at all, might mean re-muxing but I'd guess based on what i remember for older apple tvs that pretty much only MPEG-TS and mp4 are supported as containers, and it has to use HLS for streaming.
Codec wise I wouldn't be surprised if it was only H264, H265, VP8, and MPEG2/4.
I'd give 50/50 on the MPEG2 support though, might be there just because the hardware had it and to ease releases from the DVD era.
Codec wise I wouldn't be surprised if it was only H264, H265, VP8, and MPEG2/4.
I'd give 50/50 on the MPEG2 support though, might be there just because the hardware had it and to ease releases from the DVD era.