I have some mp4 files that just sound is played not video with jw player and f4 player. But all other mp4 files are playing correctly.
what can be wrong?
Pump the video through Handbrake with the default options, plus check "Web optimized." I'll wager that it plays just fine in JW Player after that.
It's a freebie: http://handbrake.fr/
MP4, like any other format, requires specific CODECs for playback. No matter what player you are using, if you do not have the required CODEC for THAT specific clip, you will not play it back correctly. To make matters worse, audio and video are seperate CODECs.
This is why you may hear audio, but see no video. It's also why some clips play, and others don't. Different CODECs.
A CODEC is a "COder/DECocer" for audio and video streams. Unless you can view the properties of a particular clip, you really don't know what CODEC the author used.
Make sure to encode your videos in H264.
Related
I am trying to compress a video for wordpress, as each time I open up my webpage the video barely loads and then freezes. How should I go about compressing the video (I have already zipped it and used a program, but at 324kb it still seems too large). I have heard something about changing the bitrate, is this helpful/how can I do that? I would like to keep it in an mp4 if possible.
The only way to change the bit-rate of a video file is to re-encode it. There are plenty of software that are capable of doing so, my favorite being avidemux which is free and reliable.
Open your file in the app, choose an encoding & a bit-rate, hit "save video" and you're good to go.
You might have to try a few different bit-rates until you get a file that will both load fast and look good on you website.
Be sure to always use the highest-quality source file available for the re-encoding operation, since re-encoding your video will always result in a decrease of your video's quality.
I am in the middle of an application that has a module to play videos from a directory on the same web-server. Everything is fine, except for the point that, while video is streaming, if I try to drag the player tip to an intermediate point, it either drags back to where it was(in flex player) or keeps loading un-till the video actually approaches that point(in case of jw-player or html5 player) or does nothing(in some other online players available). My client wants to be able to play or start buffering from any desirable point. I read something about RTMP to be used for such thing, but wasnt able to find a direct guide over how to do it.
Help appreciated!
If you're talking about being able to load a video file from x seconds in to the video, you should look into http pseudo-streaming. Here's a link to the jwplayer page about it: jwplayer pseudo-streaming
I have a video clip that has some issues on default install of Win7: video plays without sound. The video clip comes from a mobile phone, it's a 3gp (mp4) file format with H264 video and AMR audio.
I wanted to find out what I can do to add playback support for AMR audio on that machine. VLC or klite/ffdshow codec packs are out of the question here. I tried to use AMR dshow decoder from MonoGram but it doesn't solve the problem. When I tried to see the graph in MonoGram graph studio it doesn't show me the graph how win7 at all is able to play the video. Seems like it doesn't use dshow filters/decoders in case of this video clip.
So the questions is: how does it play the clip and how can I extend default os functionality to make my clip playable.
I need to implement a video player that should play files(wmv, mpeg, mp4 etc..), I have tried object tag, but it requires media player plugin to play I dont want this kind. Somebody can suggest me.
Thanks in advance.
For playing Video in Website, the users need to download plugin (WMP or any other player). Without the plugin, Video cannot stream or play in browser.
Sure, you can embed a YouTube video on any site, but the content ultimately must come from their server. What technology(ies) do they have that prevents us from saving/redistributing content?
From a protocol standpoint, you would think that anything that comes over the wire could be saved. I hope I am not the only guy on Earth who does not know how to "save" a YouTube video...
There are a couple of plugins for Firefox out there that let you save the content. Basically it parses the sourcecode and looks for the videofile (either .flv or .mp4) and downloads that directly. The flash player on the page just plays the supplied file. They could of course obfuscate the path to the video file, but that can be reverse engineered as well. They can't really do anything about it, because the video file has to be on the user's computer at some point, or if not, the stream could be intercepted as well.
eg. https://addons.mozilla.org/de/firefox/addon/6584/?src=api
Mostly it's a legal deterrent rather than technical. There are a plethora of programs out there that will allow you to download their video. But there are two things they do that help reduce unauthorized downloads:
Use is flash to control the download and playback.
Hosting video yourself is not cheap, and thus it's much easier to simply leave the video on youtube.
They don't do anything about it. Very likely your Flash viewer downloads a copy and puts in somewhere on your harddrive (under my Linux system with Firefox and Adobe Flash in /tmp). After you are done viewing the file is removed to save disk space, but since it is on your harddrive nothing prevents you from making a copy elsewhere.
You might want to look at the 'analogue hole', in the end, data still has to be displayed on your screen, or get through your speakers and what not. It's always theoretically possible to intercept it at that point, or even just record your audio-out into another machine.
So as far as the analogue hole goes, the only solution is to skip that, in this form:
(source: thisdomainisirrelevant.net)
Which is not that marketable.