![]() ![]() In that case I'll just take the slower option. REMUX MP4 AAC SOFTWAREOutside of the Apple bubble, MKV is widely supported by current hardware and software players. QuoteI may need to do more files as well, because it appears people like to use mkv despite it being not very compatible. If both file size and quality matter, use x264 and accept relatively slow encoding speed at good quality levels. possible read spead) don't matter, but the time matters and a hw accelerated encoder is available, yank the bitrate to 10000kbps (this might be even the default value) in the configuration of the "Nvidia H264" encoder to keep quality close to that of the source (you will always lose quality by re-encoding). If the video stream is HEVC, then apart from AV1 (which we support only for decoding at the moment), everything will inflate the file size unless you reduce resolution or accept a very big drop in quality. QuoteBecause I plan to remux 13 fullHD files which are ~200mb each. It will always affect the quality (unless you do a quick remux, but when you say converting to MP4 you probably mean HEVC to H.264), but how much or. Maybe ~2x bitrate for the same visual quality compared to x264, but very content-dependent. I fear, I can't provide any solid estimates. QuoteAnd just how low compression are we talking? REMUX MP4 AAC DRIVERHow might I enable this hardware accelerated encoder?ĭoes your laptop have a NVIDIA graphics card? If yes and the NVIDIA graphics driver is very recent, there should be a "Nvidia H264" encoder in the list of video encoders. 'mp42' means a 'compatible brand' 'MP4 v6-14'. I want to use FFmpeg to remux losslessly into the MP4 container, preferably with a one-step-process, but I want the ftyp atom of the mp4 file to be mp42. ![]() If your laptop has a NVIDIA graphics card, you might try the NVIDIA H.264 hw accelerated encoder, which achieves only low compression but is blazingly fast. video is AVC 元.0, audio is HE-AAC / LC (aka HE-AACv1 or aacp or AAC+SBR). 1/4 of real time) is an excellent speed at the default quality level. Quote from: eumagga0x2a on January 12, 2020, 03:44:29 PMĢ hours for a fullHD video (approx. Also, I was not able to understand the solution because of my lack of knowledge in programming. Pretty sure it's because of the OPUS codec but is there anything I can do to change this? I saw a previous thread ( ) which had a solution in an older version but they had a PCM codec in their file. I'm trying to convert a mkv to mp4 losslessly so I can run the file on a bluray player, and so I want to remux to mp4, but saving as mp4 just brings up the error, "Unsupported - Only AAC, AC3, E-AC3, MP2, MP3 and Vorbis supported for audio". I'm running a nightly build, the latest as of now: 2.7.5 Hi, new to the forums and muxing, so apologies for being slowĮxtra data: 01 02 20 00 00 00 90 00 00 00 ![]()
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