I prefer not to compress the audio because I have often noticed some asynchrony with respect to the video when cutting. Using FFMPEG you can convert rtsp stream to rtmp. The verification of the duration is important because I capture files of about 3 hours and at my choice I perform some data while the capture is in progress. If i use mkv or avi its output would be: N/A I use the mpegts codec because I need to check the duration of the capture in real time with the command: ffprobe -i /home/pi/NAS/main.mov -show_entries format=duration -v quiet -of csv="p=0"
It is necessary that the file does not get corrupted if the camera loses the connection for a few moments (mp4).Īt the moment I use the command below, but the ts codec does not support pcm_alaw and therefore the audio is not heard: ffmpeg -stimeout 2000000 -rtsp_transport tcp -i -c:v copy -c:a copy -f mpegts -y main.ts Audio (pcm_alaw) and video (h264) must be synchronized.
By this tool we can convert files from one format to another format. Or in simple words ffmpeg is simply a tool which implements a decoder and then encoder. FFmpeg is a free software project that produces libraries and programs for handling multimedia data. I need to capture an audio/video rtsp stream uncompressed in a file from ipcamera. So before going to detail description have a brief introduction of FFmpeg.
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