Hi All,
I have a process where I have a number of different inputs to ffmpeg.
Typically I create inputs using ffmpeg, ie.
ffmpeg -loop 1 -re -i 1.png -c libx264 -preset ultrafast -s 200x100 -r 24 -
pix_fmt yuv420p -f mpegts udp://a.b:1235
ffmpeg -loop 1 -re -i 2.png -c libx264 -preset ultrafast -s 400x200 -r 24 -
pix_fmt yuv420p -f mpegts udp://a.b:1236
ffmpeg -loop 1 -re -i 3.png -c libx264 -preset ultrafast -s 200x100 -r 24 -
pix_fmt yuv420p -f mpegts udp://a.b:1237
When I read these input streams I often see that ffmpeg is not able to
determine the input. See ex. below.
How can I make ffmpeg pick up the input without any analysis or probing?
Will a set of input parameters make it possible for ffmpeg to pick up the
input right away?
Can I do an ffprobe on the input a determine the needed input parameters
for ffmpeg?
Ex:
ffplay -i udp://a.b:1235
.
.
.
[h264 @ 0x7f552002b400] decode_slice_header error
[h264 @ 0x7f552002b400] no frame!
[h264 @ 0x7f552002b400] non-existing PPS 0 referenced 0B f=0/0
Last message repeated 1 times
[h264 @ 0x7f552002b400] decode_slice_header error
[h264 @ 0x7f552002b400] no frame!
[h264 @ 0x7f552002b400] non-existing PPS 0 referenced 0B f=0/0
Last message repeated 1 times
[h264 @ 0x7f552002b400] decode_slice_header error
[h264 @ 0x7f552002b400] no frame!
[h264 @ 0x7f552002b400] non-existing PPS 0 referenced 0B f=0/0
[mpegts @ 0x7f55200008c0] decoding for stream 0 failed
[mpegts @ 0x7f55200008c0] Could not find codec parameters for stream 0
(Video: h264 ([27][0][0][0] / 0x001B), none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize'
options
udp://a.b:1235: could not find codec parameters
Any help would be appriciated !
Thanks Thomas S
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