YUV to RAW Conversion with vsrawsource in avisynth

[jindadil007]

Hi,

I have a vob file which is in YUV format. I need to convert it to RAW format and then back to YUV.

I need to know what are the command vsrawsource filter in avisynth would require to recognise correct format of video when i convert it back to YUV.

Thanks

[LigH.de]

What do you believe is "YUV format", if not raw?

Do you mean YUV4MPEG (*.y4m) – which is almost raw YUV video, just with a header?

[jagabo]

If you want header-less, container-less, raw YUV data in a file you can use GraphEdit and the Dump filter.

[LigH.de]

I believe avs2pipemod and ffmpeg can be used as well, in both directions; conversions from headerless raw YUV just require a lot of parameters to specify the attributes which are not in any header.

[jagabo]

For example, this script produces five frames of 320x240 YV12 colorbars:

ColorBars(width=320, height=240, pixel_type="YV12")
Trim(0,4)

Opened and run with this graph in GraphStudioNext (an modern version of GraphEdit):


[Attachment 40474 - Click to enlarge]

Created the attached file (zipped for upload). That's the DUMP filter at the top right of the filter chain, the NULL RENDERER at the bottom right (data goes nowhere).

The raw file can be opened with:

RawSource("yv12.yuv", width=320, height=240, pixel_type="YV12")