I tried an Elgato HD60 S+ capture card after the recent uvideo changes,
but it doesn't seem to work -- even though a brief glance suggests
uvideo should support it.
The first thing that's a bit odd is that mjpeg isn't listed as being
supported, even though the device supports it. `raw` is shown as
supported, though with an unsupported pixel:
$ ffplay -f v4l2 -list_formats all -i /dev/video0
...
[video4linux2,v4l2 @ 0x410d675800] Raw : nv12 :
NV12 : 3840x2160
[video4linux2,v4l2 @ 0x410d675800] Raw : nv12 :
NV12 : 3840x2160
[video4linux2,v4l2 @ 0x410d675800] Raw : Unsupported : Unknown UC
Format : 3840x2160
[video4linux2,v4l2 @ 0x410d675800] Raw : nv12 :
NV12 : 3840x2160
/dev/video0: Immediate exit requested
However, even `raw` doesn't seem to work, with ffmpeg stalling for about
10 seconds and then spitting out a couple of `ioctl` errors before
giving up:
$ ffmpeg -f v4l2 -i /dev/video0 -video_size 3840x2160 -input_format rawvideo
-c:v copy out.nut
...
[video4linux2,v4l2 @ 0x5d3cf962c00] ioctl(VIDIOC_DQBUF): Invalid argument
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, bitrate: 2388791 kb/s
Stream #0:0: Video: rawvideo (NV12 / 0x3231564E), nv12, 3840x2160, 2388791
kb/s, 24 fps, 24 tbr, 1000k tbn
Output #0, nut, to 'out.nut':
Metadata:
encoder : Lavf60.16.100
Stream #0:0: Video: rawvideo (NV12 / 0x3231564E), nv12, 3840x2160, q=2-31,
2388791 kb/s, 24 fps, 24 tbr, 1000k tbn
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[video4linux2,v4l2 @ 0x5d3cf962c00] ioctl(VIDIOC_DQBUF): Invalid argument
[in#0/video4linux2,v4l2 @ 0x5d3cf93b800] Error during demuxing: Invalid
argument
[in#0/video4linux2,v4l2 @ 0x5d3cf93b800] Error retrieving a packet from
demuxer: Invalid argument
[out#0/nut @ 0x5d3cf94f800] video:0kB audio:0kB subtitle:0kB other
streams:0kB global headers:0kB muxing overhead: unknown
[out#0/nut @ 0x5d3cf94f800] Output file is empty, nothing was encoded
size= 0kB time=N/A bitrate=N/A speed=N/A
Relevant dmesg output:
uvideo0 at uhub1 port 2 configuration 1 interface 0 "Elgato Game Capture HD60
S+" rev 2.10/0.00 addr 2
video0 at uvideo0
uhidev7 at uhub1 port 2 configuration 1 interface 2 "Elgato Game Capture HD60
S+" rev 2.10/0.00 addr 2
uhidev7: iclass 3/0, 19 report ids
uhid7 at uhidev7 reportid 1: input=0, output=0, feature=1
uhid8 at uhidev7 reportid 2: input=0, output=4, feature=0
uhid9 at uhidev7 reportid 3: input=258, output=0, feature=0
uhid10 at uhidev7 reportid 4: input=0, output=260, feature=0
uhid11 at uhidev7 reportid 5: input=0, output=1, feature=0
uhid12 at uhidev7 reportid 6: input=1, output=0, feature=0
uhid13 at uhidev7 reportid 7: input=0, output=0, feature=1
uhid14 at uhidev7 reportid 8: input=0, output=0, feature=1
uhid15 at uhidev7 reportid 9: input=0, output=3, feature=0
uhid16 at uhidev7 reportid 10: input=33, output=0, feature=0
uhid17 at uhidev7 reportid 11: input=0, output=35, feature=0
uhid18 at uhidev7 reportid 12: input=0, output=1, feature=0
uhid19 at uhidev7 reportid 13: input=1, output=0, feature=0
uhid20 at uhidev7 reportid 14: input=0, output=2, feature=0
uhid21 at uhidev7 reportid 15: input=0, output=3, feature=0
uhid22 at uhidev7 reportid 16: input=32, output=0, feature=0
uhid23 at uhidev7 reportid 17: input=0, output=35, feature=0
uhid24 at uhidev7 reportid 18: input=0, output=1, feature=0
uhid25 at uhidev7 reportid 19: input=1, output=0, feature=0
uaudio6 at uhub1 port 2 configuration 1 interface 4 "Elgato Game Capture HD60
S+" rev 2.10/0.00 addr 2
uaudio6: class v1, high-speed, sync, channels: 0 play, 2 rec, 0 ctls
audio1 at uaudio6
Laurie
