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https://askubuntu.com/questions/428986/mp4v-and-mp4a-in-ubuntu-vlc
[0x7f529c004470] main decoder error: no suitable decoder module for fourcc `mp4a'. VLC probably does not support this sound or video format. I thought that Ubuntu supported all the latest codecs. Is there a way to fix this? Or even a way to convert my video for use? I imagine that it could have to do with ffmpeg, but I have no idea.
https://trac.ffmpeg.org/ticket/2522
This does not look like a valid ticket: $ ffmpeg -i input1 -i input2 output will (assuming both input files contain at least an audio and a video stream) only use streams from input1. Please test the different ways of concatenation and report back. And please test current git head, enhancement requests are not accepted for releases.
https://ffmpeg.org/ffmpeg-codecs.html
In addition each codec may support so-called private options, which are specific for a given codec. Sometimes, a global option may only affect a specific kind of codec, and may be nonsensical or ignored by another, so you need to be aware of the meaning of the specified options. ... FFmpeg’s b option is expressed in bits/s, while opusenc’s ...
https://forum.videolan.org/viewtopic.php?t=111801
Dec 07, 2013 · I forced strictness to -2 in FFMpeg options in advanced VLC options. It's under Tools>Preferences, then I click All under Show settings, click on Video codecs under Input / Codecs, then FFmpeg . So it's: Tools>Preferences>Video codecs>FFmpeg . Under FFmpeg I scroll down to under Encoding and I go to Strict standard compliance and I set it to -2 .
https://devtalk.nvidia.com/default/topic/1044184/driver-does-not-support-the-required-nvenc-api-version-required-8-2-found-8-1/
Nov 16, 2018 · Older ffmpeg doesn't use nvENC API version 8.2, that's why it works. I have the same issue with ffmpeg 4.1, latest nv-codec-headers and Linux driver 410.73. If I compile ffmpeg with nv-codec-headers from sdk/8.1 head, of course it works. Any hint?
https://forum.videolan.org/viewtopic.php?t=54645&start=0
Jan 11, 2009 · I added the CF and LD flag so the build processes can find the x264 and ffmpeg libs and include files. After building and installing it turns out, vlc can encode h264, but doesn't know how to encode aac/mp4a nor mp3.
https://stackoverflow.com/questions/28429526/ffmpeg-h-264-encoding-for-html5-and-ultimately-mpeg-dash
FFMPEG H.264 encoding for HTML5 (and ultimately MPEG-DASH) Ask Question Asked 4 years, 10 months ago. ... and is very strict on only supporting the "avc1.42E01E,mp4a.40.2" codecs. ... FFMPEG doesn't support the Extended profile for H.264.
http://blog.convertanymusic.com/convert-m4a-to-wav-audacity/
Save the file, run, and install the Setup wizard for FFmpeg. Go again to Audacity and you will see Lame and FFmpeg successfully downloaded to Audacity. Now, you can import M4A to Audacity for editing or converting. How to Convert M4A to WAV in Audacity. Step 1. Launch Audacity and click on File > Open and select the M4A files you want.
https://stackoverflow.com/questions/54750953/how-to-compile-ffmpeg-to-get-only-mp3-and-mp4-support
I'm building Electron app and I use ffmpeg to convert m4a or webm files to mp3, and also to merge video only mp4 with m4a audio file to mp4. I am able to achieve this using [media-autobuild-suite]
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