Thanks for the post Andrew. I should have raised the issue in a nice way, but I can be a git sometimes.
Anyway the file does play on windows, in many different ways: Quicktime 7 Nero Showtime VLC Windows media player (& any other directshow-codec-supporting video app) via installation of some h264 support thats too complicated to explain now. The average windows user may not have any of the above options available to them right now, but it bodes well for the future that people arent limited to quicktime as the only playback solution. I dont know if it works on the ipod, I havent got one yet, but if its been encoded with main profile, rather than baseline, then it wont. The PSP is a pig for compatibility. As well as the normal resolution restraints, the file format is slightly non-standard (hence qt encoded h264 wont work), the framerate must be listed as 30 in the video file (even if the real framerate is different, then this causes audio-video snc issues) and also filename issues. After changing the filename of rb oct 21, it still didnt play on the PSP v2. How did you encode? When it comes to issues with PSPs <v2 not playing h264, yeah thats an additional complication for sure. I wonder what proportion of PSP users are intot he hackss and homebrew, here in the UK the PSP shipped with v2 firmware so theres probably less people with 1.5 here. I originally assumed youd be offering normal mpeg4 and h264, I think I hoped for this because rocketboom has done such a good job of supporting multiple formats throughout its first year, so take it as a compliment that I was dissapointed. Its certainly possible to crate a h264 file that will play on the Mac, PC and PSP. I am unsure at this stage whether a PSP-compatible h264 file can alo be made to work on the ipod, it depends if the additional sony atom structures that the PSP requires, causes incompatibility with video ipod. And whether baseline/main profile differences between the 2 devices scupper this plan. As for the playback performance of h264, yes its intensive. Its most likly that both the PSP and the ipod use a seperate decoder chip to handle h264, and thats why software-only decoding is struggling on older computers and handheld devices in comparison. I will post some details of my PSP encoding experiences using both a PC and mac in the coming days. Cheers Steve of Elbows --- In videoblogging@yahoogroups.com, "ecomputerd" <[EMAIL PROTECTED]> wrote: > > Other people seem to believe that the H.264 quality is good, but my > guess is they are comparing the quality per filesize or bitrate. It > seems the quality per decoding or MHz "performance" is either equal > or below other encoders: just my guess based on my experience > playing back on a Pocket PC. The "some_postman" video that came > around was supposed to be 25fps and 800kbit/s, played back with > about 70% dropped frames at 7.778 fps. > > Your post of 14.985 fps and 800 kbit/s worked with 136/3169 dropped > frames. Fairly low dropout (playback fps of 14.342). I'm showing > Audio: MPEG4 AAC Audio, AAC0 (Codec LibFAAD LC, HE,Ps AAC, 32kHz > Mono) and Video: AVC aka H.264, AVC1 (FFmpeg AVC). > > Plays back pretty good on a 500+MHz VGA Pocket PC. > > I was hoping H.264 would also be a clear winner as well. You can get > better playback performance with something like DivX, I think. I > haven't done extensive testing, but the H.264 videos that people > seem to be making are all (so far that I've tested) taxing to the > playback system. > > Incidently I love that song AND video. Sounds like a 1950's-era > scat. The only thing that seems to give it away is the rushing snare > roll, which I don't think I've ever heard in "earlier" music before > (not that I listen to much of it, though). I could be all wrong on > that, but either way: sounds great! And that framerate plays back > decently on my Pocket PC. > > Greg Smith > Author, FeederReader - Pocket PC *direct* RSS text, audio, video, > podcasts > www.FeederReader.com - Download on the Road > > --- In videoblogging@yahoogroups.com, andrew michael baron > <[EMAIL PROTECTED]> wrote: > > > > I'm in limbo on the H264/MP4 files (Steve). > > > > I recieved a copy of a the new Vegas app last month which is > > recomended for making PSP files, but its Windows only. Also, there > is > > some controversoty over using the new Mp4 H264 file format on PSP > > right now because its not backwards compatible and the new PSP > > firmware 2.0 does not support all of the 3rd party apps that were > > built up during the run of 1. > > > > So a lot of people are telling me that they cant play the new > H264 > > version because they will not upgrade the firmware. > > > > Also, I was hoping that there would be a solution with h264 MP4 > that > > would work cross platform, but the files that I was creating were > > aparently not working on PSP or any Windows players. > > > > Here is the last file I made: > > http://rocketboom.com/video/rb_05_oct_21.mp4 > > > > It's H264 and I wish this file would work in Quicktime, Ipod, PSP > and > > on Windows. > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get Bzzzy! (real tools to help you find a job). 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