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redstrike · #11 08-08-2011, 10:39 AM

Re-converted to a low bit rate version, but it's still laggy.
http://www.raphay.com/test3.html

NiteWave · #12 08-08-2011, 02:18 PM

Hi, it's quite fast to me at the moment.

it's a network speed issue --- the download speed between the server and browser. if download speed slow, the video have to keep buffering to be able to play.

redstrike · #13 08-08-2011, 03:42 PM

Quote:

Originally Posted by NiteWave

Hi, it's quite fast to me at the moment.

it's a network speed issue --- the download speed between the server and browser. if download speed slow, the video have to keep buffering to be able to play.

I think you misunderstand me. I means everything working, buffering ok, but the video frames become unstable, slow than loading in the normal way. Please open the video by your windows media player, or sth elese and compare it 1 to 1 with the video on the browser which has been seeking time.

In my opinion, maybe it's file issue, or flash player or web server.

NiteWave · #14 08-08-2011, 08:34 PM

you mean "slow motion" ? i.e., original video is 30 frames/second, but playing with 20 frames/s, or 10 frames/s. so looks like slower than normal. if it's the case, I haven't experienced it yet.

do the video play normally without seek? it's normal in my random seek tests.

to prevent a single IP consuming too many bandwidth, maybe you can try limit the Outbound Bandwidth to 256K(or 364K, 128K etc), to see if any improvement.

Server->Security->Outbound Bandwidth (bytes/sec)

redstrike · #15 08-08-2011, 10:26 PM

Quote:

Originally Posted by NiteWave

you mean "slow motion" ? i.e., original video is 30 frames/second, but playing with 20 frames/s, or 10 frames/s. so looks like slower than normal. if it's the case, I haven't experienced it yet.

do the video play normally without seek? it's normal in my random seek tests.

to prevent a single IP consuming too many bandwidth, maybe you can try limit the Outbound Bandwidth to 256K(or 364K, 128K etc), to see if any improvement.

Server->Security->Outbound Bandwidth (bytes/sec)

Yes, NiteWave. I mean "slow motion". The video play normally without seek, but after seek the motion is slow than normal a little.

UPDATE:
I re-converted the video to 2 different presets by using another softwares. It's work now. Thanks for your support.

NiteWave · #16 08-09-2011, 08:50 AM

Thanks for your update. can you specify what's the root cause? so others can learn from your experience.

redstrike · #17 08-09-2011, 10:05 PM

Quote:

Originally Posted by NiteWave

Thanks for your update. can you specify what's the root cause? so others can learn from your experience.

I tested by using another softwares. The root cause is the original video's frames rate, i met 2 cases both of them has 24 fps. The 29.97 fps video is suitable for internet streaming than any others.

Then, Encoder software is the another issue with them. I usually use TMPGEnc with the preset optimize for small size but high quality (it need more computing power). Last night, i have tested by using Adobe Media Encoder with the same preset with TMPGEnc... it's end up like TMGPEnc. In some encoder for common user like AVS Video Converter, the quality of result can't be compared to 2 of above but the video end up is OK.

Maybe this is the bottneck of mp4. So, Youtube doesn't use mp4 for preset 480p of their video. I usually see the FLV.

I suggest the Pseudo-Streaming FLV feature for LiteSpeed.

NiteWave · #18 08-09-2011, 10:52 PM

not sure if the video is ok when upload to youtube ?

litespeed has supported Pseudo-Streaming FLV earlier than mp4. it's simpler than mp4.

redstrike · #19 08-09-2011, 11:01 PM

Quote:

Originally Posted by NiteWave

not sure if the video is ok when upload to youtube ?

litespeed has supported Pseudo-Streaming FLV earlier than mp4. it's simpler than mp4.

I downloaded the original mp4 720p from Youtube. Everything is ok with Youtube.

Do i need a tool to move the medata of FLV to the start of file, like MP4? Can you suggest me? After conversation, we need to do a minor step to make our video can be streaming in Pseudo way. I have tried to download the FLV from Youtube, but i can't Pseudo streaming that FLV?

NiteWave · #20 08-09-2011, 11:08 PM

Quote:

Do i need a tool to move the medata of FLV to the start of file, like MP4?

I used a tool flvtool++ from facebook:
http://mirror.facebook.net/facebook/flvtool++/
and working well.

Quote:

I have tried to download the FLV from Youtube, but i can't Pseudo streaming that FLV?

rename the flv file with suffix .flv. it looks video file downloaded from youtube without .mp4, .flv suffix

random seek to mp4 has more overhead of CPU, memory at the server side than flv. so if .flv is ok, better to use .flv to reduce the server overhead.