Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
30th November 2005, 15:56 | #41 | Link | |
Learning...
Join Date: Nov 2005
Location: 12.97°N, 77.56°E
Posts: 135
|
Quote:
But when I pass YV12 to DivX via VDub ? |
|
5th December 2005, 10:06 | #43 | Link | |
Learning...
Join Date: Nov 2005
Location: 12.97°N, 77.56°E
Posts: 135
|
Quote:
|
|
7th December 2005, 15:01 | #45 | Link |
Learning...
Join Date: Nov 2005
Location: 12.97°N, 77.56°E
Posts: 135
|
Yeah, that makes sense. But this seems to suggest otherwise.
http://forum.doom9.org/showthread.ph...779#post747779 |
7th March 2006, 12:30 | #48 | Link |
Registered User
Join Date: Jan 2004
Location: Here, there and everywhere
Posts: 1,197
|
You can also disable Cedocida with VCSwap if you simply wish to avoid conflict with other installed DV codecs. Heres the link:
http://members.chello.nl/~p.bekke/ |
12th May 2006, 20:42 | #50 | Link |
misguided audio guy
Join Date: Sep 2005
Location: Ohio, USA
Posts: 2
|
Complete newbie here. For some reason I cannot get this DV codec to appear in the list of available video compressors in VirtualDub. I have all the standard ones in there, plus X264.
I need to get source material into DV format for importing into a Roland Edirol device for playback. I feel like I'm so close!! I take the source through an Avisynth script for the necessary manipulations -- I really only need VirtualDub to output the file. Or do I? Any advice would be great. Thanks. |
27th July 2006, 17:31 | #52 | Link |
AviSynth plugger
Join Date: Nov 2003
Location: Russia
Posts: 2,183
|
I try tyhis codec.
It is good, thanks. But I have some comments: I like to have YUY2 (not YV12) for decode toAvisynth. But when I use "force" option, and YUY2 switch, I can not open any DV avi in VirtualdubMod (it accept RGB only). So, in my opinion, we must have not radio buttons to decode option, but check boxes for enabled video formats (RGB, YUY2, YV12). In this case "force" option box can be omitted. The same for encode options. What anybody (and author) think about it? I can try implement it myself, but I have some other programs to code
__________________
My Avisynth plugins are now at http://avisynth.org.ru and mirror at http://avisynth.nl/users/fizick I usually do not provide a technical support in private messages. |
8th August 2006, 18:10 | #53 | Link |
AviSynth plugger
Join Date: Nov 2003
Location: Russia
Posts: 2,183
|
More comments (I look to its source a little).
Cedocida DV decoder v0.1.6 always firstly produce raw YV12-DV frame. If output format is YV12 DV, it directly output this frame. If output format is not YV12-DV, Cedocida always convert this DV-frame to YUY2. (YUY2 is formed correctly, by averaging, and Reinterpolate420 is not needed). If output format is YUY2, Cedocida output this YUY2. If format is RGB, Cedocida converts this YUY2 frame to RGB and output it. The last conversion is the same as Avisynth function ConverttoRGB(). If format is YV12, Cedocida convert this YUY2 frame to YV12 (interlaced or progressive)and output. The last conversion is the same as Avisynth function ConverttoYV12(interlaced=true or false). So, output to YV12 produce exactly the same results as output to YUY2 with followed function ConverttoYV12(...). It is possible to implement direct (one-step) conversion YV12-DV to YV12 normal (MPEG2), with appropriate pixel chroma interpolation . But I am not sure, that the difference will be visible.
__________________
My Avisynth plugins are now at http://avisynth.org.ru and mirror at http://avisynth.nl/users/fizick I usually do not provide a technical support in private messages. |
15th August 2006, 08:13 | #56 | Link |
Registered User
Join Date: Jan 2004
Location: Here, there and everywhere
Posts: 1,197
|
Hi Fizick,
As you've probably noted, there's been some dialogue on this same issue in the 'DV Decoder Differences - Update' thread http://forum.doom9.org/showthread.ph...039#post863039 Out of interest, if I configure Cedocida with forced output to YV12 (DV) and then apply ConvertToYV12(interlaced=true) what will be the YV12 subsample format of the output AVS stream i.e. is the YV12 (DV) subsample format retained or will ConverttoYV12 convert it to YV12 'normal' (MPEG2, interlaced) format? If the latter, then one assumes that conversion via a YUY2 intermediate is avoided, unless of course ConvertToYV12 does the same. On that note, I wonder if anyone is aware of an AVS filter or ''analyzer'' that can reveal the YV12 sub-sample format of an AVS stream? 'Info' doesnt (afaik) provide this level of analysis. Last edited by WorBry; 15th August 2006 at 08:18. |
15th August 2006, 12:43 | #57 | Link |
Registered User
Join Date: Mar 2004
Posts: 889
|
If Cedocida adopts simple linear interpolation, "DV 4:1:1/4:2:0 Interlaced" -> YUY2 -> "MPEG2 4:2:0 Interlaced" would be equivalent to direct "DV 4:1:1/4:2:0 Interlaced" -> "MPEG2 4:2:0 Interlaced", except for more rounding errors.
|
15th August 2006, 15:59 | #58 | Link |
Registered User
Join Date: Jan 2004
Location: Here, there and everywhere
Posts: 1,197
|
Henry,
Thanks for your input but it does really answer the fundamental question: If fed with YV12 (DV), what is the output from ConvertToYV12(interlaced=true). Is it: a) YV12(DV) i.e. unchanged? or b) YV12 (MPEG2, interlaced) ? If b), does ConvertYV12 make the conversion: c) Directly, with no intermediate involved? or d) Via YUY2 or another intermediate that incurs an additional color space conversion step Since I am not aware of a means of analyzing the YV12 sub-sample format of an AVS output stream, I cannot answer the question myself, hence my inquiry whether such an AVS filter or analyzer exists. Cheers |
15th August 2006, 17:09 | #59 | Link |
Registered User
Join Date: Mar 2004
Posts: 889
|
@WorBry, I was indeed not answering your questions. I was actually responding to Fizick. Let's move to other threads for discussions not directly related to Cedocida.
Last edited by henryho_hk; 16th August 2006 at 00:06. |
15th August 2006, 19:37 | #60 | Link |
Registered User
Join Date: Jan 2004
Location: Here, there and everywhere
Posts: 1,197
|
Well you can do so if you like, but since my query quite clearly does relate directly to Cedocida and was specifically put to Fizick in response to his post above, which itself refers to ConvertToYV12, I think it is appropriately placed in this thread. If he or someone else with credible insight chooses to respond, then I will have learned something of value. If not, then it is only I who have wasted my time. I must apologize if my post has interrupted your own highly charged exchange of original ideas,, but I dont see Moderator under your avitar. Thank-you.
Last edited by WorBry; 15th August 2006 at 19:42. |
Thread Tools | Search this Thread |
Display Modes | |
|
|