FFMPEG options to stitch webRTC recorded mp4 videos

[Mark Sergienko]

The WebRTC recorded video change resolution if network bandwidth changes... This results in a weird video with changing size of the frame.

Does anyone have the FFMPEG command that does stitching and rescaling to consistent resolution? Preferably if it can do so without re-encoding the video?

This is what I'm currently using for RTMP concatenation (which has constant resolution):

for f in `ls -tr $FILES`; do

    ffmpeg -y -i $f -c copy -bsf:v h264_mp4toannexb  -video_track_timescale 90000 -f mpegts ${f/\.mp4/_converted\.ts};

done

ffmpeg -y -i "concat:$(ls -tr $TS_FILES | paste -sd "|" -)" -c copy -bsf:a aac_adtstoasc $final