ffmpeg-python
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kkroening
Pipes not working
I'm trying to get pipes working in a class in the following manner
self.webcam = (
ffmpeg.input(
opts["device"],
format="avfoundation",
framerate=self.fps,
pix_fmt="uyvy422",
s=opts["size"],
probesize="42M",
)
.output("pipe:0", format="rawvideo")
.run_async(pipe_stdout=True, pipe_stdin=True)
)
self.writer = (
ffmpeg.input("pipe:0", format="rawvideo")
.output(self.name, pix_fmt="yuv420p")
.overwrite_output()
.run_async(pipe_stdin=True)
)
where opts["device"], opts["size"], self.name, and self.fps are objects within my class. When I call my code, I get the following error
Input #0, avfoundation, from 'HD Pro Webcam C920':
Duration: N/A, start: 79133.371567, bitrate: N/A
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1920x1080, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native))
Press [q] to stop, [?] for help
Output #0, rawvideo, to 'pipe:0':
Metadata:
encoder : Lavf58.45.100
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1920x1080, q=2-31, 995328 kb/s, 30 fps, 30 tbn, 30 tbc
Metadata:
encoder : Lavc58.91.100 rawvideo
av_interleaved_write_frame(): Bad file descriptor
Error writing trailer of pipe:0: Bad file descriptor
frame= 1 fps=0.0 q=-0.0 Lsize= 4050kB time=00:00:00.03 bitrate=995338.0kbits/s speed= 12x
video:4050kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%
Conversion failed!
Not really sure where the problem is on the bad file descriptor? Any advice?
Were you able to figure this out? Facing the same error
process = (
ffmpeg
.input(file)
.output("pipe:", format="rawvideo", pix_fmt="rgb24", s="27*48", vsync="0")
.run_async( pipe_stdout=True)
)
video_stream, err = process.communicate()
