Media Server :: Fix A 'Backward Timestamp' In FLV File?
May 5, 2009
I posted a discussion earlier on a video stream not playing past a certain time. I ran FLVCheck on the video and it came back saying there is a backward timestamp in the video. I recompressed it from the uncompressed video (AVI) and I got the same error again in the exact same place.
The error has to be in the uncompressed file, but I don't know how to fix it. Recompressing obviously doesn't help. Anyone know how to fix a 'Backward timestamp'?
We have a very simple webcam recording/playback application we're using in a mission-critical user assessment application.Users are given the ability to record themselves using their webcam and microphone, then review their recording and submit it for graded review.The recording application appears multiple times per HTML page, and while we can record and play back video, we have large numbers of instances in our core.log of the following error
Server detected a backward timestamp from [####]to [####] in file: [filePath]
While these videos will play back with varying degrees of reliability, they will often "hang" for several seconds at the end of playback before sending the appropriate NetStream.Play.Stop and NetStream.Buffer.Empty events, and will sometimes hang indefinitely.Further, they report inaccurate runtime metadata, causing our playback indicator and progress/scrub bar to function erratically.In any case, the functionality and user experience of the recording tool is substantially degraded and must be fixed in order to successfully deploy this tool.
Disabling NTP services is not an option, and further does not appear to be the culprit, as these errors occur on a large number of recordings.As recordings need to be immediately available for self-review before submission, running flvcheck on each recording is also not an option.We have tried a variety of fixes, including waiting to unpublish until the buffer is empty,reconnecting after every recording, forcing FMS not to reuse connections, and using separate NetStream objects for recording and playback.Nothing has eliminated these errors.Adobe support referred us to Tier 2 support, and I am in the process of contacting them, but I'm looking to exhaust all my options before continuing.Is there any reliable solution to the backwards timestamp recording issue, or do we need to find a different media server application for our needs?
I have seen lots of different things about recording live streams (maybe too much, pieces everywhere but no one good source for the answers), but not what I am looking for...I want to setup recording of live streams on FMIS 3.5 where the file is named the stream name plus a timestamp (something like streamname-yyyymmddHHMMSS: myteststream-20090928101015).The people who use our site tend to start/stop several times (we are dealing with events that have breaks) and I want to be able to combine all the files with the same name into one big file on the server side afterwards using some utilities.I cannot find a tutorial that walks you through the different functions, the differences between them, and how recording is setup/works.
Does anyone knows if it's possible to write some bytes received from an AIR or Flex client in a server side file using the File class ? I have been trying for hours without any result.My goal is to store on the server side a swf file sended by a client in a ByateArray.Here is the code I have ended with, assuming that myfile.swf alreadey exists on the server prior to the code execution, and is at the right place, and that pBytes is a ByteArray received from the client which contains a swf file :
function writeFile( pBytes ) { var myFile = new File( "myFile.swf" );
I'm doing a test install before we update our old server to 4.03.I've got the server software installed and configured (4.03 server, using iis for web).All the test stuff on the sample index page works, except for the dynamic stream tab.I've eyeballed the .f4m file, and tried putting in a complete url to the samples...but no luck.i just keep getting the stock connection timed out message.
Where do i need to look to start confiriming where this issue may be coming from?I've made made sure I can reach all the test videos by making flash players for them, calling them via rtmp... no problems.It's got to be something dumb with either the f4m file, or the way it's being served (btw, i have added all the mime types to iis , including .f4m as video/mp4....which is one of two ways I've seen it added).
Im picking up a dedicated server it will be CentOS and be well above the minimum req for FMS 3.5 Interactive. Question: I want to use my dedicated server for more then just the FMS. Is this possible? Basically I want to use the same server for FMS and for the file hosting of my site. Obviously I would give it a different IP but am not sure what I will need to do specifically
I have a video, it's 3:11 but it will only play until 2:41 then it will stop...... but when I fast forward to 2:42 or 2:43 it will play till the end..... how do I fix this file so it will work..... what do I do.
I'm trying to add timestamp to the xml file address if the swf wil be loaded from the web server but it gives me a null object reference error depending on if there is timestamp() function call or not.
Here's my code that doesn't work as I was expecting: ActionScript Code: //... public function init():void { try { xmlLoader = new URLLoader(); xmlLoader.addEventListener(IOErrorEvent.IO_ERROR, ioError); [Code].....
When I load just addresses without the timestamp xmlLoader.load(new URLRequest(address)); it outputs everything I was already expecting when the timsetamp function call where involved, (as I was testing some considerable errors). Code: Class LoadXML/ address: start.xml Class LoadXML/ address: play.xml Class LoadXML/ address: end.xml Class LoadXML/ io error: [IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2 text="Error #2032: Stream Error. URL: file:///E|/flash/as3/projectName/lib/work/end.xml"]
Got a really big problem here. I keep on getting "NetConnection.Connect.Failed" when I load a .asc file on my main.asc file, i use the method load() in my code. I really don't understand why this happens, but when i comment out the code that loads the asc file, I can successfully connect to fms. I can't figure out what's happening here. Btw, i'm using fms4 in windows 7 32bit.
I've looked through the scripts in the scripts/ directory, but haven't seen anything obvious.
I would like to be able to specify the file name to capture the stream to. At present, the capture file is always named the same as the stream, which means if I stream for a bit, stop, then restart, the originally captured file gets overwritten. I'd like to be able to incorporate something, i.e. the stream start time, into the capture file name.
I do understand the differance between ssas and as3. Not all, but all most everything I see written in SSAS can be writen into a external AS3 file. This leads me to quite a few questions I'm hoping you kind people can shed some light on for me.
1) What is the advantage of writing a SSAS file over an external AS3 file?
2) Can I write an .asc file in AS3 or do I have to use AS1? Please understand I'm using tuts from fmsguru.com and the books "Learning Flash Media Server" (pdf) and "Programming Flash Communication Server". I'm not a javascript programmer so nothing I do in AS1 seems to make any sence while everything I do in AS3 does. It may not seem like it to you people that are programmers, but to those of us that aren't, AS1 and AS3 are miles apart.
3) kind of off topic, but a security question. I'm not a "hacker" and don't like the jerks that are. My question is on external AS / SSAS files and swf files. When my fla is compiled into a swf does my external AS files remain external? I assume they do, but then what is the threat of the swf being decompiled? In most projects I would do I could care less if somebody had access to my fla as long as they don't have my actionscript files.
I don't know. Maybe on questions one and two I'm getting confused becasue I'm using out dated material. Again I assume that even though fms was built off of the javascript engine it should be able to read and execute my AS3 file. Other wise what was the point of the evolution of actionscript into a fully functional programming language?
Can Adobe Flash Media Streaming Server 3.5 run on AMD Athlon Dual Sock Quad Core?I just requested a Dell server to be added to our farm to run as a Media Server and to my surprise, while reading the requirements for FMS it states the following: 3.2GHz Intel® Pentium® 4 processor (dual Intel Xeon® or faster recommended)
I'm trying to troubleshoot a Flash Media Server working with a little video playback application I wrote a few years ago that has suddenly stopped working.I'm using CS3/Actionscript 3.My app uses the FLVPlayback Component, and was working well last time I checked. I recevied a report that the videos stopped working, and have been looking into it.I figured I'd add a bunch of event listeners to the FLVPlayback's ncMgr.netConnection so I could get debug info on things like io errors, net status, etc.The problem I'm running into is that the netConnection is null when I set it to anything on my Flash Media Server, and adding any event listeners to this netConnection throws errors.Here's what I've tried so far:
Playback of a local FLV file works fine.In the FLVPlayback documentation, I found an example and stole the URL of the stream they were using in the example, and that works fine, although it is an HTTP protocol stream rather than RTMP.Any attempt to access FLV files on my Media Server, which has worked fine in the past, basically cause the FLVPlayback object to sit and hang in "buffering" mode and never progresses beyond this point.The netConnection object in this case is null.Here's my code:[code]........
Again the purpose of this is to troubleshoot the video streaming from the Flash Media Server, and it seems like there is no netconnection to the server being created.Does this mean that the server is not working, or is there a problem with the way I'm trying to access the content on the server?This was all working fine before, and I have set up the server-side application .ASC files and such to allow things to work fine on the server end.
I'm trying to make a software which sends video and audio data to a flash media server by using RTMP protocol. Currently, my program can communicate with a flash media server correctly. RTMP specifications does not describe about the raw data in video/audio messages, so I muxed raw H.264 and AAC data into video/audio messages and sent to the server. The server seems to accept them, but a video player cannot playback the stream sending from the server. The player just says "Loading..." For a test purpose, I sniffed the network packets between Wirecast and the flash media server and ripped off only video and audio data. Then, I muxed those data into video/audio message and sent to the flash media server. In this case, the video player connected to the server can playback the stream correctly.
I checked the stream sent from Wirecast, the stream seems not to be H.264 raw data because those data are not started from 0x17 instead of H.264 start code. With those situation, I am wondering what kind of container format I should use for H.264/AAC data to the flash media server.
I have to a problem using the Flash Media Interactive Server Feature Explorer. I want use the sample: RecordStream. I can see the instance "RecordStream" in console FMS 3.5. and show me the video in app AIR, but does not save the .FLV in my server.
I have Flash Media Streaming Server 3.5 (not Interactive) running on RHEL5.5 x86_64 Linux.All is working well, however how do I prevent unauthorized access to connecting to the live stream and streaming content?How can I setup the server to require a user and password to stream live media to the server?I am new to this product and I have been reading some documentation but I have not found a clear cut answer on how to force a username and password to connect to the server to stream live content only.I am using the Adobe FMS Apache install, what files need changing?[code]I want to lock down a person from connecting to the server on the public internet and starting a live stream?Can this be done with a user name and password?
We purchased FMIS and we are encoding large 15+ hour MP4 recordings using flash media encoder. When opening these large files for playback, which have not been opened recently the player displays the loading indicator for up to 4 minutes! Once it has apparently been cached on the server it opens immediately from any browser even after clearing local browser cache. So a few questions for the experts
1. Why is it taking so long to load the file. Is it because the MP4 metadata is in the wrong format and the file is so huge? I read somewhere that Media Encoder records with incorrect MP4 metadata is that still the case?
2. Once its cached on the server, exactly how much of it is cached. Some of these files are larger than 500mb.
3. What fms settings do you suggest I change. FMIS is running on windows server R2 64 bit, but FMIS itself is 32 bit. We have not upgraded to the 64 bit version. We have 8GB of ram. Is it OK to set FMS cache to 3GB. And would that only have enough room for 3-4 large files, because we have hundreds of them.
I am using flash media server 4.5 for video streaming and genrate log files. In log file i have found the user publish point name in "x-sname" filed but this filed contains blank values in many events.This fileds contains value only in "PUBLISH,UN_PUBLISH,RECORD and PUBLISH_CONTONUE" event and other then these 4 events all events are not user related event.?I like to fetch the user bandwidth detials using these log files which user used how many bandwidth.I also like to know I can see serval files on flash log folder name "access.00.log,access001.log and admin.00.log,admin.001.log" Any one please explain what is the name convation for this filed how can i identifiy which files contains information for which date.?
Is it possible using command line, or a php file to get the duration of an flv file using the flash media server. I used the flvcheck file to fix the meta data, and was using the duration operator but it didn't come up with anything. I am guessing the duration operator just shows if there is errors with this?
As we know the default format for video is H.264 and for audio it's AAC. We want to change the format. Please tell us ow can we change the format of the FLV file at the time of creation?
I am trying to stream a MP4-file from the VOD-folder using the videoplayer in flash. I can play the sample-file without any trouble, but when i try to use iceage.mp4 as source, it don't find the stream.[URL]..
