![]() ![]() The audio codec of the MP4 file format is low quality MP4 audio channel is available only for two channels frequency 48kHz MP4 allows storage of multiple files so easily The MP4 file format makes it easy to copy, move and upload files over the net You can play MP4 on a number of players and devices MP4 can allow you to save a single movie file so you can access it easily MP4 supports Initial Object Descriptors and MPEG. It is part of ISO base media file format and is based on QuickTime File Format. It is a multimedia container that's able to store still images, subtitles, audio, video, and more data in just one file.īecause MP4 is able to reduce file sizes and hold a wide variety of data, it is ideal for both offline and online use. It is a very popular format and is commonly used in streaming videos online. MP4 player stands for Motion Pictures Expert Group -4 Part 14 format. It is difficult to save in one file because of the. For instance, an AVCHD file size of 100 MB is only 25 MB when saved in other types of formats With AC-3 Dolby Digital codec, it produces good quality audioĪVCHD file size is disproportionate. It is compatible with Blu-ray Disc formatĪVCHD can easily record 1920 by 1080 resolution at 16:9 aspect ratio, 60i, 50i footage ![]() AVCHD is compatible with Blu-ray, meaning you can burn its videos to DVDs and Blu-ray discs directly without having to convert them to other formats.ĪVCHD is able to record good quality live pictures This format has been improved to include stereoscopic video along with 50 and 60 frames per second mode of the 1080p. The AVCHD format can compress videos in small disc spaces while at the same time preserving the details and quality of the video. AVCHD uses MPEG-4 for videos and both linear PCM and Dolby Digital (Dolby AC-3) for audio. It is mainly used by camcorders to store videos. The audio comes through but not that video codec format.The Advanced Video Coding High Definition (AVCHD) video format was invented by Panasonic and Sony in a bid to produce the best codec for recording videos. So you have a badly encoded video here, it’s not in a format browsers can display, somehow. I downloaded it and the detailed codec info is: Generalįormat settings, Matrix : Default (H.263)ĭoing a diff on fixed version… Codec ID : avc1 The video seems fundamentally invalid / corrupt to me. In fact, I can test that myself can’t I… I’ve grabbed the video from the URL I posted and re-uploaded it here… I’m guessing there would also then be potential differences between PC / Mac users too?Īlso, with the above did you copy/paste the video URL into your reply, or is that a re-recorded version of it? The reason I ask is that it plays here for me, but doesn’t on our hosted solution. Is there any way to definitely state that it is a codec issue? If so, are there any recommendations on which should be used when recording their videos (typically these are screen recordings of their games). Interestingly, for the one which I have linked, the user has mentioned that they have managed to view it once, but it has since reverted back to just audio, whilst I have only been able to hear the audio all the way through. ![]() These are MP4s though? I don’t have a lot of knowledge regarding codecs, but is it possible then that different users, perhaps using different software, would have used different codecs (unknowingly) which could result in this issue? Here’s the link to the actual video from the topic: Here’s a link to a topic with a video having the issue: The only work around I have found so far is to edit the video (I used Camtasia), insert a second of “nothing” at the start of the video, then re-upload it, this forces Discourse to see the file as “new” content and for whatever reason it then seems to play.Īny thoughts on this? It’s not a one off, I’ve noticed it a few times now, but I can’t keep manually applying the work around, and it seems odd that different people would have the same issue if it wasn’t related to Discourse in some way. I can download the video and play it (on Windows) and it appears correctly. I tried opening the URL in a separate tab and it prompts to download. The content is embedded in a topic, and when you press play you can hear the sound, there’s just not visual. I have noticed a few of our topics don’t appear to be rendering MP4 videos recently (hosted solution). ![]()
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