13 Replies Latest reply on Dec 17, 2010 3:37 PM by hhansard

    Jerky F4V playback in IE -- Firefox seems OK.

    hhansard Level 1

      Seen multiple threads for “jerky playback in flash”, but nothing posted seems to help.

      I’ve tried in the Flash forum, but No Joy.

      6 different videos – all with same results all using Adobe presets.

      Using the F4v/FLV .5 Mbs export preset from PP to media encoder

      All F4V/FLV exports show “jerky” playback in flash/IE, but fine in FireFox  (so sounds like a Flash player or IE issue –right, but this is one of the largest combos on the net, so I figure someone has gotten this to work).

      Audio is OK.

      Same behavior on 2 different systems (Win7 x64 with lots of RAM and good CPU)

      Systems all have latest updates, etc, etc. CPU/memory is low usage.

      Hardware and systems are high-end and well-tuned.

      Using VBR 1pass and CBR target in the 0.50 Mbs range.

      Have used a variety of export presets in the 0.4 to 1.5 Mbs – all with same results.  So my test set exceeds 20 exports – all with identical behavior.

      Internet connection is 20Mbs to desktop.

      Locally-hosted F4Vs play OK.

      Hosted MOVs are downloaded and play very well.

      Same behavior on 2 separate hosted ISPs for all videos.  Non-dedicated flash servers.

      Uninstalled/reinstalled Flash.  Hardware acceleration on/off, AVP on/off, etc.

      Any suggestions?

      If folks are having success with flash, can you provide export settings in the 0.5 to 1.x Mbs range that work for you?

      Since I have seen lots of “jerky” playback posts associated with Flash, is this some sort of “known issue”?

      PP CS5, latest AME, latest Flash 10.x

      Thanks, H

        • 1. Re: Jerky F4V playback in IE -- Firefox seems OK.
          hhansard Level 1

          I have updated this post with more detailed information to hopefully get some help.

          I have read multiple posts/threads on “jerky playback in flash”, but nothing posted seems to help my situation.  I have tried in the Flash and PP forums, but to date no responses.

          6 different videos – all Encoded with AME and produce the same results all using the Adobe F4V (h.264 Flash) presets from PP.

          Started with the F4V/Web presets (same as source at 29.97), and then adjusted the output size to reduce Mbps until I got something to work.  Tried all settings from about 1.5Mbps down to about 0.4 Mbps, but all showed the same result.

          All AME encodes show “jerky” playback in flash/IE, but smooth in FireFox.  Audio is OK

          The video plays smoothly for a second, then shudders for about 3 frames, then smooth, then shudders, etc.

          Local playback on AMP looks fine, this bypasses the browser completely, so not really a valid test.  I have attached a MediaInfo for a sample encode below.  The HTTP code for playback is generated by DW and very simple, so I doubt it is that.

          Same behavior on 2 different systems (Win7 x64).  Systems have latest updates, etc, etc. Hardware and systems are high-end and well-tuned.  CPU never exceeds 5% and memory never above 10%.

          Have used a variety of export presets in the 0.4 to 1.5 Mbps – all with same results.  So my test set exceeds 20 exports – all with identical behavior.

          Tried VBR 1pass and CBR.

          Same behavior on 2 separate hosted ISPs and local playback. All with identical behavior, but local playback is less pronounced.  Dedicated UNIX servers with high-speed connections, but not flash servers. Internet connection is 50+Mbps to desktop – but again, local playback also shows the shuttering behavior, just not as much.

          It sounds like a Flash player or IE issue, but this is one of the largest combos on the net today, so I figure someone has gotten this to work using AME.

          Uninstalled/reinstalled Flash.  Hardware acceleration on/off, AVP on/off, etc.

          Since I have seen so many “jerky” playback posts associated with Flash, is this some sort of “known issue”?  I know that millions use h.264/Flash and IE daily, so I must be doing something wrong.  I realize the difference between IE and Mozilla Flash, but I can’t reconcile what I am seeing to just IE.  This is not a minor playback difference, but dramatic on 2 well-tuned systems.

          PP CS5, latest AME, latest Flash 10.x, etc

          Does anyone have examples of h.264 Flash output that hosts OK in the 512x288 to 786x432 range on IE? Can you provide link to output and settings that got you there.

          Thanks, H

           

           

          General

          Complete name                    : T:\VIDEO_Project_Exports\F4V432\Gaskin.f4v

          Format                           : MPEG-4

          Format profile                   : Adobe Flash

          Codec ID                         : f4v

          File size                        : 23.5 MiB

          Duration                         : 3mn 30s

          Overall bit rate                 : 934 Kbps

          Encoded date                     : UTC 2010-11-20 15:52:46

          Tagged date                      : UTC 2010-11-20 15:52:46

          ©TIM                             : 00;00;00;00

          ©TSC                             : 30000

          ©TSZ                             : 1001

           

          Video

          ID                               : 1

          Format                           : AVC

          Format/Info                      : Advanced Video Codec

          Format profile                   : Main@L4.1

          Format settings, CABAC           : Yes

          Format settings, ReFrames        : 3 frames

          Codec ID                         : avc1

          Codec ID/Info                    : Advanced Video Coding

          Duration                         : 3mn 30s

          Bit rate mode                    : Constant

          Bit rate                         : 850 Kbps

          Width                            : 768 pixels

          Height                           : 432 pixels

          Display aspect ratio             : 16:9

          Frame rate mode                  : Constant

          Frame rate                       : 29.970 fps

          Standard                         : NTSC

          Color space                      : YUV

          Chroma subsampling               : 4:2:0

          Bit depth                        : 8 bits

          Scan type                        : Progressive

          Bits/(Pixel*Frame)               : 0.085

          Stream size                      : 22.0 MiB (94%)

          Title                            : MainConcept

          Language                         : English

          Encoded date                     : UTC 2010-11-20 15:52:46

          Tagged date                      : UTC 2010-11-20 15:52:46

           

          Audio

          ID                               : 2

          Format                           : AAC

          Format/Info                      : Advanced Audio Codec

          Format version                   : Version 4

          Format profile                   : LC

          Codec ID                         : 40

          Duration                         : 3mn 30s

          Bit rate mode                    : Constant

          Bit rate                         : 48.0 Kbps

          Channel(s)                       : 2 channels

          Channel positions                : Front: L R

          Sampling rate                    : 22.05 KHz

          Stream size                      : 1.21 MiB (5%)

          Language                         : English

          Encoded date                     : UTC 2010-11-20 15:52:46

          Tagged date                      : UTC 2010-11-20 15:52:46

           

          Preset

          Output: 762x432, same as source fps, de-interlaced, AAC+ Version 2, 48kps, 44.1kHz, Stereo, CBR, Target 0.85Mbs

          Source: Sequence, Gaskin_HDV, 1440x1080(1.333), 29.97fps, Upper, 0;03;19, 48000Hz, Stereo

           

          • 2. Re: Jerky F4V playback in IE -- Firefox seems OK.
            Jim_Simon Level 8
            Local playback on AMP looks fine

            local playback also shows the shuttering behavior, just not as much.

             

            Well, which is it?

             

            Post a link so others can test it on their systems.

            • 3. Re: Jerky F4V playback in IE -- Firefox seems OK.
              hhansard Level 1

              Thanks for looking, sorry about the confusion.  I though the the local playback was fine, but i realized i was comparing

              apples to oranges (1.5mbs -v- 0.3 mbs) a couple of hours later.

               

              local playback is also jerky, but less obvious than hosted.

               

              here is the link.

               

              http://www.hansard.org/video_gaskin.htm

              all advice very welcome.

              Thanks, H

              • 4. Re: Jerky F4V playback in IE -- Firefox seems OK.
                hhansard Level 1

                Updated with more test results.

                Testing repeated on 2 XP/SP3 systems running both IE and FireFox.  Both additional systems show identical results with six different encoded videos as outlined in previous post.

                • 5. Re: Jerky F4V playback in IE -- Firefox seems OK.
                  Stan Jones Adobe Community Professional & MVP

                  Tried on a WinXP SP3, IE 7, Firefox 3.6.11.  A jerky (I might call it "pulsing") appearance was more apparent on IE, but there were significant pauses every 5 to 20 seconds on both.

                   

                  Ran speedtest on my system: 5.91 Megabits.

                  • 6. Re: Jerky F4V playback in IE -- Firefox seems OK.
                    hhansard Level 1

                    Interesting, my speedtedt is between 30 and 50+.  I see problems in IE, but not in FireFox.  I think there are utilities to choke the pipe.  I'll give it a try to achieve a level to choke firefox as well.

                     

                    Do you encode h.264 flash for remote hosting?  if you get good results, what settings do you you use?

                    • 7. Re: Jerky F4V playback in IE -- Firefox seems OK.
                      Jim_Simon Level 8

                      I got smooth playback using the nightly build of Minefield (4.0b8Pre), but jerky playback on IE 8.

                       

                      Playback of other web sites is fine on IE8, however.  I wonder if the embeded player is making a difference here.

                      • 8. Re: Jerky F4V playback in IE -- Firefox seems OK.
                        hhansard Level 1

                        Thanks for taking a look.

                         

                        The embedded player code in the html is the FLVPlayer_Progressive.swf that is included as part of Dreamweaver.  The code is inserted in the HTML when you insert the video. I "assume" most folks deploying with an Adobe-centric solution are using identical code.

                         

                        I'll do some research to see if there are other players.

                         

                         

                        When you say you looked at other sites that look OK, can you give me a link or to so that I can eliminate anything local on my side.

                         

                        Again, thanks for taking a look.

                         

                        H

                        • 9. Re: Jerky F4V playback in IE -- Firefox seems OK.
                          hhansard Level 1

                          Found the answer.  The player provided by Adobe with Dreamweaver is dog-awful-slow in IE and only a little better in FireFox.  By switching to FLV Player, the problem disappears completely.

                          I posted this help request in 4 forums and received only 1 response that was a “hunch”.  It put me on the right path.  Thanks.

                           

                          H

                          • 11. Re: Jerky F4V playback in IE -- Firefox seems OK.
                            Eizenn

                            Wow....I was cracking my head with this one...

                             

                            Mostly on trying to find an answer using google because searching for slow flv playback on IE comes back with so much stuff that isn't related.

                            Until I searced adobe media encoder that is...

                            So I too was having this problem of only IE playing back my FLV's slow while firefox, safari and chrome played it perfectly fine! That made me try different encoding options and such. My next step was to use another flv player. I was going to do it yesterday but now I found this post.

                             

                            Care to share what other player you used instead of the one provided with Dreamweaver?

                            Is there an update to dreamweaver that resolves this? I think the problem is both in CS4 and CS5.

                             

                            Thanks!

                            • 12. Re: Jerky F4V playback in IE -- Firefox seems OK.
                              Jim_Simon Level 8
                              Is there an update to dreamweaver that resolves this?

                               

                              Since it works fine in other browsers, it may be IE that needs the update.

                              • 13. Re: Jerky F4V playback in IE -- Firefox seems OK.
                                hhansard Level 1

                                The player provided by Adobe with Dreamweaver is dog-awful-slow in IE and only a little better in FireFox.

                                 

                                By switching to a third-party player, the problem disappears completely.

                                 

                                There are a number of third-party players on the market.

                                 

                                I ended-up with WEBstunning.