![]() To ignore this, add a trailing to the map. I get the correct video file but the audio file contains 7 tracks, each one containing 8 channels. To ignore this, add a trailing to the map. ![]() Once you know the index, the -hwacceldevice index flag can be used to set the active GPU for decoding and encoding. I also want the audio file to have 7 tracks - one with the first 2 channels, and another 6 with each of the remaining channels. Use the following command to obtain a list of all NVIDIA GPUs in the system and their corresponding ID numbers: ffmpeg -vsync 0 -i input.mp4 -c:v h264nvenc -gpu list -f null. I want to create 2 files from that - one with the video, and one with the audio. ![]() If rollingover1.mp4 only contains audio or video then the stream you want has index 0, not 1. To ignore this, add a trailing '' to the map. ![]() ![]() I have a file that has the following format (note the number of tracks and channels within each track): Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a.mov':ĭuration: 00:01:02.04, start: 0.000000, bitrate: 29083 kb/s ffmpeg -i rollover0.mp4 -i rollover1.mp4 -c copy -map 0:0 -map 1:1 -shortest rollingover.mp4 and it said this: Stream map '1:1' matches no streams. ![]()
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