Lass die Datei mal vom kostenlosen Programm MediaInfo prüfen. DVB T2 ist eigentlich H.265. Sehr sperrig.
H.265 ist kostenpflichtig. Bei Nvidia gibt es die Hardware-Unterstützung erst seit der 960er.
The seventh generation PureVideo HD[edit]
The seventh generation of PureVideo HD, introduced with the GeForce GTX 960 and also included in GTX 950 and GTX 750 SE, a second generation Maxwell (microarchitecture) GPU (GM206), adds full hardware-decode of H.265 Version 1 (Main and Main 10 profiles) to the GPU's video-engine. Feature Set F hardware decoder also supports full fixed function VP9 (video codec) hardware decoding.
Previous Maxwell GPUs implemented HEVC playback using a hybrid decoding solution, which involved both the host-CPU and the GPU's GPGPU array. The hybrid implementation is significantly slower than the dedicated hardware in VP7's video-engine.
The seventh generation PureVideo HD is sometimes called "PureVideo HD 7" or "VP7", although this is not an official Nvidia designation. This generation of PureVideo HD corresponds to Nvidia Feature Set F (or "VDPAU Feature Set F").
The eighth generation PureVideo HD[edit]
The eighth generation of PureVideo HD, introduced with the GeForce GTX 1080, GTX 1070, GTX 1060, GTX 1050 Ti & GTX 1050, GT 1030 a Pascal (microarchitecture) GPU, adds full hardware-decode of HEVC Main12 profile to the GPU's video-engine.
Previous Maxwell GM200/GM204 GPUs implemented HEVC playback using a hybrid decoding solution, which involved both the host-CPU and the GPU's GPGPU array. The hybrid implementation is significantly slower than the dedicated hardware in VP8's video-engine.
The eighth generation PureVideo HD is sometimes called "PureVideo HD 8" or "VP8", although this is not an official Nvidia designation. This generation of PureVideo HD corresponds to Nvidia Feature Set H (or "VDPAU Feature Set H").
Von Prozessor-Seite kann offenbar auch erst die Skylake-Generation mit H.265 richtig etwas anfangen:
https://software.intel.com/en-us/blogs/ ... g-you-down
Wenn es keine Hardware-Unterstützung gibt, muss die CPU allein ran. 4 X 2.1GHz sorgt eher für ein gemächliches Tempo.
Eventuell kommst Du nicht über ein Konvertieren herum - wenn es denn tatsächlich h.265 sein sollte.