[mythtv] ffmpeg and mythtranscode

[Paul Harrison]

On 05/12/17 19:01, Stuart Auchterlonie wrote:

> On 05/12/17 18:50, Paul Harrison wrote:
>> On 05/12/17 17:15, Stuart Auchterlonie wrote:
>>
>>> On 05/12/17 00:55, John P Poet wrote:
>>>> I thought we /had/ agreed to drop support for non-hardware recorders
>>>> after 29?
>>>>
>>> With the current v4l2 devices available, do they do encoding on the
>>> device, or do they still spit out raw frames?
>>>
>>> Regards
>>> Stuart
>>>
>> I have one that accepts HDMI in and outputs raw video frames and audio
>> and is seen as a standard v4l2 device. Doesn't currently work in Myth
>> but it would be nice if it did.
>>
>> Paul H.
> If you have it connected, i'd love to see the output from
> `v4l2-ctl --all`
>
> Not that i'll be able to do anything about it any time soon,
> I'm just curious at the moment.
>
>
> Regards
> Stuart
>

Back on the list :) I can't get used to Thunderbird replying to the 
sender not the list by default it catches me out every time :(

This is the output after playing a stream at 1280x720 which is about the 
limit I can get with my aging dev system with USB2. It will support a 
large range of output resolutions from 640x360 up to 1920x1200 
regardless of the input resolution though.

$ v4l2-ctl --all
Driver Info (not using libv4l2):
         Driver name   : uvcvideo
         Card type     : XI100DUSB-HDMI: XI100DUSB-HDMI
         Bus info      : usb-0000:00:13.5-6
         Driver version: 4.13.8
         Capabilities  : 0x84200001
                 Video Capture
                 Streaming
                 Extended Pix Format
                 Device Capabilities
         Device Caps   : 0x04200001
                 Video Capture
                 Streaming
                 Extended Pix Format
Priority: 2
Video input : 0 (Camera 1: ok)
Format Video Capture:
         Width/Height      : 1280/720
         Pixel Format      : 'YUYV'
         Field             : None
         Bytes per Line    : 2560
         Size Image        : 1843200
         Colorspace        : sRGB
         Transfer Function : Default
         YCbCr/HSV Encoding: Default
         Quantization      : Default
         Flags             :
Crop Capability Video Capture:
         Bounds      : Left 0, Top 0, Width 1280, Height 720
         Default     : Left 0, Top 0, Width 1280, Height 720
         Pixel Aspect: 1/1
Selection: crop_default, Left 0, Top 0, Width 1280, Height 720
Selection: crop_bounds, Left 0, Top 0, Width 1280, Height 720
Streaming Parameters Video Capture:
         Capabilities     : timeperframe
         Frames per second: 50.000 (50/1)
         Read buffers     : 0
                      brightness (int)    : min=-100 max=100 step=1 
default=0 value=0
                        contrast (int)    : min=50 max=200 step=1 
default=100 value=100
                      saturation (int)    : min=0 max=200 step=1 
default=100 value=100
                             hue (int)    : min=-90 max=90 step=1 
default=0 value=0

Paul H.