[FFmpeg-user] segment options not work in combining audio and video the same time?

[Arachnia]

I want to convert a rtsp stream to ts and m3u8. My command is 

ffmpeg -i 'rtsp://localhost:5544/rtsptest' -vcodec libx264 -crf 24 -b:v 128k
-s 352x288 -profile:v baseline -pix_fmt yuv420p -flags -global_header -map 0
-f segment -segment_time 10 -segment_list_size 2 -segment_list test.m3u8
-segment_list_type m3u8 -segment_format mpegts 240p%08d.ts

It works fine. And then I try to add a empty audio track, command is

ffmpeg -f s16le -i /dev/zero -f rtsp -i 'rtsp://localhost:5544/rtsptest'
-vcodec libx264 -crf 24 -b:v 128k -s 352x288 -profile:v baseline -pix_fmt
yuv420p -c:a libfaac -ar 22050 -async 1 -ac 2 -b:a 1k -flags -global_header
-map 0 -f segment -segment_time 10 -segment_list_size 2 -segment_list
test.m3u8 -segment_list_type m3u8 -segment_format mpegts 240p%08d.ts

The ts file I get only have audio stream!

if I encode stream to a flv file, or a mp4 file, the commands all OK!

ffmpeg -f s16le -i /dev/zero -f rtsp -i 'rtsp://localhost:5544/rtsptest'
-vcodec libx264 -crf 24 -b:v 128k -s 352x288 -profile:v baseline -pix_fmt
yuv420p -c:a libfaac -ar 22050 -async 1 -ac 2 -b:a 1k -f flv test.flv

And I found that if I change position of input devices in command like this

 ffmpeg -f rtsp -i 'rtsp://localhost:5544/rtsptest' -f s16le -i /dev/zero
-vcodec libx264 -crf 24 -b:v 128k -s 352x288 -profile:v baseline -pix_fmt
yuv420p -c:a libfaac -ar 22050 -async 1 -ac 2 -b:a 1k -flags -global_header
-map 0 -f segment -segment_time 10 -segment_list_size 2 -segment_list
test.m3u8 -segment_list_type m3u8 -segment_format mpegts 240p%08d.ts

Then ts files only have video stream.

Something wrong with me?




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