|
Rockbox mail archiveSubject: Re: Video plugin and tools problems/limitationsRe: Video plugin and tools problems/limitations
From: [IDC]Dragon <idc-dragon_at_gmx.de>
Date: Wed, 18 Feb 2004 19:34:51 +0100 (MET) Hello Jens et al, > - Question: Is it possible to set the "repeat" flag in the RVFh > for long videos that do not fit into the buffer completely and > the plugin repeats the whole video over and over? (I would do > this with a hex editor then.) Yes, the player is using this flag, you can do so. rvf_mux just doesn't yet offer to set it. But it is used player-internally when playing an old-style (headerless) video, I generate an internal header then, and if that's shorter than 1 second I set the loop flag to treat is as a still. > - Perhaps on the 2 MB recorder it is better to not spin down the > disk between reads. Could you prepare a modified plugin to > test this? Hmm, then I would have to explicitely prevent the disk from falling asleep. Needs a new plugin function, or I change it to do nothing and you set a long spindown timer. Currently I spindown immediately when the data portion is read. > > I think this can be changed to 4 GB, have to look into it. > > It should be possible to read even >4 GB on windows if you use > NTFS. Don't know about linux here. It seems the POSIX file functions I use for portability dont support >2 GB. If I give that up, I can use Windows' 64 bit file addressing. > >> - "RVF_MUX" has problems multiplexing the video with audio > >> that uses MPEG2 or MPEG2.5 sample rates ... > > > MPEG2 should work. I have not implemented the 2.5 audio > > formats, but this can be easily changed. > > MPEG2 definitely doesn't work most of the time. I did the > following thorough tests: May be a bug. I have meanwhile implemented 2.5, without testing it, I send it to you in a separate email. Maybe it changes the 2 behaviour as well, but I don't think so. I have also speeded up halftone.exe by a factor of 3. In there some really suboptimal code from my first tries was never reworked. Feel free to redistribute, I can't update my webspace right now. > > Strange, I only set the volume, because it can be muted when > > the plugin starts. The others I don't touch. ... > > But it definitely does reset these. I tested this with really > strange setting, e. g. set balance all to the left - as soon as > you start playing a video, it's back to the center and stays > there after it, but when you enter sound settings, it still shows > "all left"! Perhaps this related to another glitch in the > plugin - there are two rather loud "pops" at the start of any > video with audio. Do you somehow reset the MAS? Other people have reported that as well. I set the volume and init the playback. Maybe there are some side effects. I currently can't compile Rockbox, while being in Taiwan. > > I try. I'm (slowly) working on a one-click tool to convert AVI > > and MPEG. This will be Windows-only, since it uses the > > DirectShow infrastructure. halftone and rvf_mux are portable. > > Don't know if a one-click tool makes much sense since there are > many special things in the conversion process which require > manual correction (e. g. I do rigorous clipping of widescreen > films because the display is so small, encode audio with > different settings with lame etc). > Most appreciated would be a > tool (could be a portable command line tool too) that > > - does all steps of AVItoYUV, Halftone and Rvf_mux at once, i. e. > takes a properly scaled AVI (112x64 RGB24, perhaps also > YUV/YV2) and an MP2/MP3 and spits out the already multiplexed > RVF. Well, not exactly one click. You still will have to set the target frame rate and check the cropping > Most appreciated would be a > tool (could be a portable command line tool too) that > - can read AVI >2 GB and even >4 GB on NTFS The portability already stops at AVI, I think. > This way you don't even need to create the intermediate AVI > physically - have a look at "AVIsynth" (http://www.avisynth.org). This is also Windows only, if I read correct. But yes, with what I have in mind you won't need any intermediate files. Jörg -- GMX ProMail (250 MB Mailbox, 50 FreeSMS, Virenschutz, 2,99 EUR/Monat...) jetzt 3 Monate GRATIS + 3x DER SPIEGEL +++ http://www.gmx.net/derspiegel +++ _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockboxReceived on 2004-02-18 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |