Ffmpeg concat not working2/21/2023 ![]() ![]() ![]() I read in the documentation that this can happen with "non-intra frame codecs" because "for non-intra frame ones you will usually get extra packets before the actual In point and the decoded content will most likely contain frames before In point too. Stream #0:1: Audio: mp3 (U / 0x0055), 44100 Hz, stereo, fltp, 128 kb/s ffmpeg -i input1.mp4 -c copy -bsf:v h264mp4toannexb -f mpegts intermediate1.ts ffmpeg -i input2.mp4 -c copy -bsf:v h264mp4toannexb -f mpegts intermediate2.ts ffmpeg -i 'concat:' -c copy -bsf:a aacadtstoasc output. ![]() As described here, all files must have the same streams (same codecs, same. With the contents of concatSpecs.txt like so: file 'a.avi'įfprobe output.avi gives me: Input #0, avi, from 'output.avi':ĭuration: 00:00:12.00, start: 0.000000, bitrate: 1014 kb/s The problem is that concat demuxer only works when multimedia streams are the same. I'm running this command ffmpeg -f concat -i concatSpecs.txt -vcodec copy -acodec copy output.avi Digest:sha256:b9e0374070dc2d9df5ec11eef4ca860fd5e38ec030276b38348d34c95a40931e. A common intermediate file format is ts (Transport Stream). Visually lossless This code is not working after minutes of console freezing, it shows this line: Killed 29 fps0.1 q0.0 size 1kB time00:04:30.07 bitrate. An option for this is to convert your files to an intermediate file format and then concatenate them easily. In the example below, I'm trying to merge three 2-second clips, but I get a video that is 12 seconds long, instead of 6 seconds. Some container formats such as mp4 cannot be directly concatenated using the Linux kernel’s cat command or FFmpeg’s concat command. ts file like this: ffmpeg -i input1.ts -c:v libx264 -vf scale640:480 -aspect 4:3 -preset slow -crf 22 -r 29.97 output.mp4. ![]() ts files contain digitized old Hi8 camcorder video, digitized at a much-too-generous bitrate & resolution for the Hi8 video format.) I can encode a single. I'm trying to cut/merge multiple videos using the concat demuxer method, but the resulting video has too many frames from each of the input videos. The output should be 640x480, 29.97fps video. ![]()
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