12/8/2023 0 Comments Use avidemux to turn mkv to mp4Thanks for all the great help everyone, we got it solved, and cheaply. This works really well because I can run them through a loop with this and do them all at once. I was trying the CLI, but couldn't quite get the right flags. But you will sometimes see them in a different order.Ĭhange the audio codec from mp3 to another if you want (aac, ac3, etc.) Change the audio bitrate as desired.Ĭhange the container from mkv to whatever you want (mp4, mov, mts, etc.) and whatever is compatible with the video and audio streams (for example, you can't put uncompressed pcm, "-acodec pcm_s16le, in mp4, so use mov instead).Ĭhange the container from mkv to whatever you want (mp4, mov, mts, etc.) and whatever is compatible with the video and audio streams (for example, you can't put uncompressed pcm, "-acodec pcm_s16le, in mp4, so use mov instead). Most files have the video as stream 0, the first audio stream as stream 1. If your audio stream isn't stream #1 you'll have to change the second number. Since we're working with a single input file the first value will always be zero. The meaning of the three numbers is file#.stream#.channel#. You can easily put the command in a For loop to process all files in a folder, all files in a folder tree, or even all files on a drive.Ĭhange "-map_channel 0.1.0" to "-map_channel 0.1.1" to keep the right channel rather than the left channel. Put the batch file in your SendTo folder and you can right click on any A/V file and select SendTo -> LeftToMono.bat (or RigthToMono.bat, or whatever name you give it). New new file will have ".mono" added to the end of the filename. Thanks!Ĭode: ffmpeg -i %1 -map_channel 0.1.0 -c:v copy -c:a mp3 -b:a 128k "%~" Put it in a batch file called LeftToMono.bat or RightToMono.bat and you can drag/drop files onto the batch file to convert them. I'd prefer to not mess with the video and leave it lossless from what I already have converted. I can process the videos through Handbrake again and choose the "mono" option, which I believe should mixdown the mono audio to go out both channels right? (If that's wrong, please let me know what audio setting I should use)īut my main question is, is there a way to re-run the videos through handbrake with the new audio option, without re-encoding the video? I feel like re-encoding, even with the same presets is going to lower the original video quality. If I have to re-capture all these videos I can, just trying to avoid that. So now I have about a dozen videos going out the right channel only. When converting the video in handbrake, the audio mixdown was set to stereo, so I falsely assumed that it would convert the mono channel to come out both right and left. The camcorder only has one audio input, and I didn't think to use a Y-adapter. I have no idea why this is happening, or how to prevent having to do the extra step of converting to AVI.Hey everyone, I made a mistake, and captured a bunch of Hi8 tapes using only one channel for audio. This results in the following MP4 files as output:įrom MKV: - 0.86MB (yes, very different size) I have created an ultra-low res AVI and MKV that exhibit this behavior (the frame rate is the only concern at this time): The video data doesn't change, but the end results do! I can just use "Copy" for Video Output, then "AVI Muxer" for output format, create an AVI file, then load that AVI file and THEN convert to MP4, but since the first file I tried this on is 28.5GB in MKV, it seems excessive to have to go through this each time I want to convert a video. This problem does not happen with the exact same video stream in AVI files. Audio makes no difference no matter what I use, or even if there is no audio. The simple method is to just choose "H264 (ff/nvidia)" for Video Output, and "MP4 Muxer" or "MP4v2 Muxer" for Output Format. If I add a filter to change the frame rate to 29.98, it just looks really choppy with the final frame rate. 1) Trying to convert mkv audio using HE-AAC codec (see. And, if possible, can you also provide a command for Change High Profile Level 5.1 to 4.1 Thank you. This happens if I use all default options for everything, or if I play with a lot of options. Can someone tell me what I am doing wrong regarding ffmpeg.exe because I am trying to convert the mkv audio to HE-AAC while retaining the video copy. However, whenever I do, I get very random frame rates and dropped frames in the resulting file, so everything looks horribly stuttered. mkv format to H264 MP4 for final archival/storage. I have been trying to translate some videos from ultra-high-bitrate XviD in. Memory: 2x 8GB G.Skills DDR3 (16GB, 1666Mhz) ![]() ![]() ![]() Using AVIDemux v2.6.10 GUI in Windows 7 圆4.ĬPU: Intel i7-2600K LGA1155 (Quad Core 3.4Ghz)
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