[Mjpeg-users] Create an audio only VCD/SVCD using mjpegtools?
Anyone tried this. My old DVD player won't support MP3 playback and I want to build a single disk for a party with a couple of hours worth of audio. Ideally I want individual tracks so that I can simply hit random, but if that won't work then a sequence of VCD/SVCD/DVD movies with a single image and the appropriate audio would probably suffice. Has anyone tried this under Linux? Steve --- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Best capture tools under Linux for V4L2?
Ok first up sorry for the cross post. I read all these lists and I feel this is a suitable subject for them all. Also sorry about the length, but I had quite a few things to cover off Been playing with numerous tools over the last few years, and whilst i'm reasonably happy with the quality i'm getting at the moment, it still isn't quite there. HW - Athlon XP 2.8, SAA7134 based capture, TNT2-M64 graphics, 512Mb Ram. OS - RedHat 9.0 with a 2.4.26 kernel with v4l2/saa7134 patches Storage - 80 Gb Seagate 7200 rpm ATA 100 HD (capture only, additional drives present for system and long term storage) - dedicated ide channel. Now I know the graphics card is a little ancient but hey it works well enough for my editing. Requirements Full screen D1 PAL Capture with 48000Hz Audio, to be transcoded into DVD. Zero frame drops or under 5 frames/hour. Accurate sync. Lossless, or close to lossless. Tools - Capture --- ffmpeg - Never happy with the level of control or the poor v4l2 support when i've tried it in the past. Has this gotten a lot better. Remember the frame drop requirements. mencoder - Also strange v4l2 problems so I haven't used it in quite some time. lavrec - Way too many frame drops. Don't understand why. Can someone give me some tips on how to best tweak this. nvrec - Used this for quite a while, especially when some of the ffmpeg codecs worked with it. Generally ok at 1/2 D1 but struggled at D1. Used to capture 1/2 D2 to produce CVD disks, but aiming for DVD quality now. ffv1rec - A by-product of the avidemux tools (http://avidemux.sf.net). Based on nvrec (nuppel container) with a lot of codecs supported (MJPEG, HUFFYUV, FFV1, MPEG4, XVID). Now this tool i've used the most of late and so i'll talk about it a bit more. It has all the great sync features of nuvec with the added bonus of better codec support. Plus 'mean' is a great developer. ffv1rec + FFV1 - Hammers the hell out of the machine. Requires too much CPU but produces great size lossless files. Speeding this code up (a lot) would be wonderful ffv1rec + HUFFYUV - Great quality, hammers the HD instead. Had some RAID 0 problems so i've dropped back to a single drive at the moment. Ok for shows upto 30 minutes but after thay I usually get loads of frame drops. ffv1rec + MPEG4 - Using the ffmpeg MPEG4 support is pretty damn awesome. Biggest problem are badly encoded interlaced artifacts. Turning on the interlaced video support is usually too much of a CPU hit. ffv1rec + XVID - Similar to MPEG4. Some people prefer it. Haven't tried it with XVID 1.0 yet. ffv1rec + MJPEG - Currenly my standard for longer captures (over 1/2 hr) but even though I use the highest quality setting i'm not happy with the video. Too many problems with dark areas, but better handling of interlaced video than MPEG4 ffv1rec + LJPEG - modified the source to add Lossless MJPEG support. Great video but not enought CPU. Real shame. ffv1rec + MPEG2 - Again tried to modify the source, but haven't got it working yet. Tools - Editing/Tweaking MPlayer - Together with mencoder. Great at tweaking/playing broken video streams. ffmpeg - Need I say more. Awesome guys Avidemux2 - Currently the only gui based tool I generally use. Plus the only tool that reads the ffv1rec nuppel based files. Great VirtualDub style tool (cheers mean). The filters here really help clean things up. lverequant - Great for shrinking MPEG2 encodes slightly and quickly to fit on a DVD. dvdauthor - Well I am aiming for DVD aren't I. Editing Process --- Typical process to produce a decent DVD capable MPEG2. 1. Load ffv1rec generated nuppel video file into avidemux2 and produce index. 2. Clean up the framing by blackening borders or junke, and hard framing if it is widescreen. 3. Take out adverts (oh the joys of commercial television) or clean up edits. 4. Add a deinterlace filter if video is suitable - improves compression dramatically if the video source is clean enough 5. Add a decent filter to clean up colour issues etc (gotta luv capturing on a windy night). 6. Render Audio to decent rate AC3 (192k or above) 7. Render Video to suitable size MPEG2 file (between 1Gb and 1.3Gb for a typical 45 Minute show). 8. Mplex to a DVD MPG file and burn away. The Issues -- 1. The better quality codecs keep resulting in frame drops. Some due to CPU (FFV1 + LJPEG) others due to data rate (HUFFYUV). 2. No equivalent to the high performance lossless MJPEG codecs available on windows like PicVideo. 3. Current solutions (MJPEG / MPEG4 / XVID) have interlace video issues or dark area encoding problems. 4. No suitable real-time software MPEG2 solution at this stage. 5. FFMPEG has a much quicker MPEG2 renderer than MJPEG Tools, but it still isn't quite standards compliant enough for my Philips DVD 711. Solutions ? --- 1. Software equivalent to Current HW MPEG2 solutions. Capture at high bitrate
Re: [Mjpeg-users] Best capture tools under Linux for V4L2?
On Tue, 2004-06-22 at 17:45, Steven M. Schultz wrote: > On Tue, 22 Jun 2004, Steven Ellis wrote: > Get yourself a IEEE1394 card (very cheap) and a Canopus ADVC100 or > even better (but somewhat more expensive) ADVC300 analog to DV > converter. The ADVC300 has a TBC and denoising capability built in > so it's well suited to convering VHS tapes which have less than great > picture stability/quality. Well thanks for the interesting tip. Already considered this angle and there are a couple of issues. 1. Can't really build a PVR around this, which is part of the long term goal. 2. Its too expensive here in NZ (NZ$ 600) On the firewire front already use it for my digital work. Wonder if anyone has played with realtime capture to DV from an analog card? Steve -- Steven Ellis <[EMAIL PROTECTED]> --- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Best capture tools under Linux for V4L2?
On Wed, 2004-06-23 at 16:12, Steven M. Schultz wrote: > On Tue, 22 Jun 2004, Trent Piepho wrote: > > DV has the extra 8 pixels on each side of a 704x480 frame but > Bt8x8 cards converting an analog signal shouldn't be giving out > 720x480 unless the right and left 8 pixels are black and the center > 704 are the actual data. I wouldn't be surprised if something is > padding/scaling things up a bit. One app I had (on another OS) > very carefully padded the 29.97... up to 30 :( Oooo Gotta love those rounding errors.. -- Steven Ellis <[EMAIL PROTECTED]> --- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Re: 24fps vs 30fps - why bother? :)
Really interesting thread on the strengths and weaknesses of different ways to encode material. Have any of you looked at the two pass MPEG2 code used in avidemux2. Its based on the mjpeg project, borrowing a 2 pass engine from XviD I belive. Anyhow I use this a lot when targetting final file size. One useful feature is it outputs a statistics file with the final MPEG 2 file when running in 2 pass mode so you get some idea of how efficient the encode has been. For example I take an off air D1 PAL video capture, edit out adverts to 45 minutes approx 1. Clean up the black borders, ie remove non-visible junk. 2. Use the DGraft Kern Deinterlacer filter - Yes I know I should leave it interlaced, but a lot of my material was a film -> TV transfer and de-interlaces really well. 3. Use the Mplayer HQ Denoise filter. 4. Encode to MPEG 2, target filesize of 1300 (3 episodes per DVD with Audio), Max Bitrate 8000 Now if the video is left interlaced I get an average Q of 8 with, and generally average video quality. With the deinterlaced video I get an average Q of 3-4 and pretty damn good video quality. Have a play and see what you think. It also has useful filters for telecine etc. Steve --- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Equivalent to Womble's GOP fix tool?
The Womble MPEG video wizard (http://www.womble.com/products/mvw.html) has a GOP fix tool that is very useful when trying to make selected MPEG2 DVB streams DVB compliant. One issue here in NZ is that one of the broadcasters is now using a rather large variable GOP size which means the MPEG2 streams are a long way from being DVD compliant. If I run the stream through ProjectX to make a PS file, and then through Womble under Windows the file can then be authored to DVD, but it makes it a very lengthy process. Any ideas on Linux tools for this job. Steve - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Equivalent to Womble's GOP fix tool?
On Mon, May 5, 2008 15:52, Steven Ellis wrote: > The Womble MPEG video wizard (http://www.womble.com/products/mvw.html) has > a GOP fix tool that is very useful when trying to make selected MPEG2 DVB > streams DVB compliant. > > One issue here in NZ is that one of the broadcasters is now using a rather > large variable GOP size which means the MPEG2 streams are a long way from > being DVD compliant. > > If I run the stream through ProjectX to make a PS file, and then through > Womble under Windows the file can then be authored to DVD, but it makes it > a very lengthy process. > It appears this issue also occurs on the UK when GOP sizes were increased on DVB-T - http://www.digitalspy.co.uk/forums/showthread.php?t=213595 Steve - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Equivalent to Womble's GOP fix tool?
On Thu, May 8, 2008 02:57, Bernhard Praschinger wrote: > Hallo > > > Steven Ellis wrote: >> The Womble MPEG video wizard (http://www.womble.com/products/mvw.html) >> has >> a GOP fix tool that is very useful when trying to make selected MPEG2 >> DVB >> streams DVB compliant. >> >> One issue here in NZ is that one of the broadcasters is now using a >> rather >> large variable GOP size which means the MPEG2 streams are a long way >> from >> being DVD compliant. >> >> If I run the stream through ProjectX to make a PS file, and then through >> Womble under Windows the file can then be authored to DVD, but it makes >> it >> a very lengthy process. >> >> Any ideas on Linux tools for this job. > No idea. > > I do not know of any tool that is able to change the gop structures > without the step of decoding it to yuv. Well I've played with Womble and it appears to be too quick to be performing a full re-encode. Makes we wonder what smarts it has > Here they usually use a to high framerate, so they don't fit to a DVD. I > always reencode what I record. Thankfully our bitstreams are usually 4.5-6.5 Mbit so perfect for DVD if the GOP size was correct - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Interlaced DVD
> Given some of the problems I've been having with yuvkineco I thought I'd
> try using mpeg2enc with -I 1 and pass it interlaced material.
>
> So I ran the following sequence:
>
> exportvideo -D 0 -Y 2 {filename} | mpeg2enc -f 8 -i 1 -q 4 -g 6 -G 18 -n
> n -F 4 -a 2 -s
>
> When I play this on my computer it looks bad - which I would have
> expected. So I burned it to DVD, popped it in the player, and it looks
> even worse...any motion is really odd looking - as if it is moving
> foward, backing up, then moving forward again. I tried various things
> with 'yuvcorrect' to change the interlacing options and get the same
> result.
>
> Is mpeg2enc supposed to be able to handle interlaced material for DVD?
> Or does that only work for SVCD? I was looking around at the code and
> it seemed like it expects progressive frames whenever -f 8 is used.
DV has the opposite field order to anlogue video for some (stupid) reason.
So either deinterlace, or I belive there is an option to switch the field
order on the encoder to fix this..
Steve
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