My application uses rtmp to record video, transcodes the flv video to mp4 using ffmpeg.
Currently, the transcoding happens after the video is recored to flv. I was informed that ffmpeg can take rtmp stream and encode to mp4. This way the processing time can probably greatly shortened as the transcoding starts with the recording.
Currently I put the ffmpeg transcoding command “ffmpeg -i rtmp://localhost:1939/recorder/1333402852509 -acodec libfaac -ac 2 -b:v 200k -ar 48k -async 1 -bufsize 3M -s 320x240 -r 30 -vcodec libx264 -b:a 64k -y 1333402852509.mp4” in the onPublish event of IMediaStreamActionNotify. But no mp4 is written to the disk.
Can someone tell me what’s the correct way to do this?