MP4 PD formats

marcwilk

Newbie Joined: May 29, 2016 22:56 Messages: 11 Offline

Solved by

Jan 17, 2022 08:46

If anyone is interested, following are MP4 formats that are supported. It is not very clear in the documentation. If anyone has a problem importing an MP4 file one of the following issues may be the problem:

chroma subsampling: 4:2:2 is not supported. You will not be able to import a 4:2:2 MP4.

10 bit video: not supported in XAVC S 4K (H.264). You will have to use another file format, like XAVC HS 4K (H.265).

Note that you have to create a custom profile to match your camera settings.

This is just what I found. Please comment if I am wrong about any of these.

Andrius_Vasaitis

Newbie Joined: Jan 28, 2022 05:24 Messages: 5 Offline

Jan 28, 2022 08:14

Its interesting. I have no answer, just some info.

It looks codec ....../H.264 is supported.

Does PowerDirector support HEVC?Video
formats: 264, 265*, 26L, 3G2, 3GP, 3GP2, 3GPP, ASF, AVC, AVI, BSF*,
DIV, DIVX*, DVR-MS, FLV, H264, H265**, HEVC**, JSV, JVT, M1V, M2P, M2T,
M2TS, M2V, M4V, MK3D*, MKV, MOD, MOV, MP4, MP4V, MPE, MPEG, MPG, MPV,
MTS, MVC*, QT, TOD, TP, TPD, TRP, TS, TTS, VC1*, VOB, VRO, WM, WMV, WTV.

And can't find info about PD chroma subsampling.

But interesting here :
https://www.rtings.com/tv/learn/chroma-subsampling.

A signal with chroma 4:4:4 has no compression (so it is not subsampled) and transports both luminance and color data entirely. In a four by two array of pixels, 4:2:2 has half the chroma of 4:4:4, and 4:2:0 has a quarter of the color information available. The 4:2:2 signal will have half the sampling rate horizontally, but will maintain full sampling vertically. 4:2:0, on the other hand, will only sample colors out of half the pixels on the first row and ignores the second row of the sample completely.
As i understood 4:2:0 most used. So you have a better quality video, but can't import to all video editing soft. I was same not lucky with apple 10 phone, then checked "better quality video" and maybe there was same "issue", just there was MOV file.

https://www.videomaker.com/article/f6/15788-the-anatomy-of-chroma-subsampling