我正在尝试使用以下命令从网络摄像头创建h265编码流。
DashCast -vf video4linux2 -v4l2f mjpeg -v /dev/video0 -conf dashcast.conf -live-media
dashcast.conf的内容是
[v1]
type=video
codec=libx265
bitrate=1000000
framerate=25
width=640
height=480
但是我收到了这个错误。
Options:
video source: /dev/video0
video format: video4linux2
v4l2 format: mjpeg
video crop: 0x0
audio source:
Configurations:
id:v1 res:640x480 vbr:1000000
[mjpeg @ 0xb194e0] Changeing bps to 8
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 50349.327770, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 1280x720, -5 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
AVCTX give frame duration of 1/1000000 - keeping requested rate -1, but this may result in unexpected behaviour.
[swscaler @ 0xb91ea0] deprecated pixel format used, make sure you did set range correctly
Press q or Q to exit...
[dashcast] Live system dropped a video frame
[dashcast] Live system dropped a video frame
x265 [info]: HEVC encoder version 1.8+1-5dcc9d3a928c400b
x265 [info]: build info [Linux][GCC 4.8.4][64 bit] 8bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
x265 [info]: Main profile, Level-3 (Main tier)
x265 [info]: Thread pool created using 4 threads
x265 [info]: frame threads / pool features : 1 / wpp(8 rows)
[dashcast] Live system dropped a video frame
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 2
x265 [info]: Keyframe min / max / scenecut : 25 / 250 / 40
x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 3 / 0 / 0
x265 [info]: AQ: mode / str / qg-size / cu-tree : 1 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : ABR-1000 kbps / 0.60
x265 [info]: tools: rd=3 psy-rd=0.30 signhide tmvp strong-intra-smoothing
x265 [info]: tools: deblock sao
Cannot parse HEVC/H265 SPS/PPS
Bad Parameter: dc_gpac_video_write_config
Bad Parameter: gf_isom_start_segment
Cannot open output video file.
Generating MPD at 2015-11-24T19:17:46.040Z
StartTime: 2015-11-24T19:17:46.040Z - startNumber 1 - last number 1
Keyboard thread exit
[dashcast] Live system dropped a video frame
[dashcast] Live system dropped a video frame
可能是什么问题？在conf文件中将编解码器更改为libx264可以正常工作。