output visually darker

[Kylde]

I noticed someone else mention this on another forum (Kylde ducks away from moderator's shoe), but why is the output quality MUCH darker, and the colors less vibrant, than the input file's? I hoped 0.4.8 might fix this, but it hasn't. Input files were xvid codec I think. Thankfully it's more than acceptable for cartoons, so my children are more than happy Overall a fantastic app though

[bigly]

I have mentioned this in 'the other VSO advertised arena'. Strangely though, I did a comparison (to original XviD) using 0.4.8 last night and found that it was significantly 'brighter' than the original. It actually looked as if the contrast was increased rather than brightness (also 'lightening' up some DivXToDVD specific artifacts). I actually thought this may have been due to a deliberate [over]tweak from those other reports. Considering you have had a 'dull' output with 0.4.8 and I have noticed a 'brighter' output with the same version (and also a 'duller' output with 0.4.7x) it looks like it might not be just a 'too dull' issue but a colour/saturation/brightness/contrast matching issue in general.

[Kylde]

[JJ]

You should compare with player that supports DivX. Then there is no extra codecs in between... I have found that most movies look quite dark on computer, but on TV they look ok.

[bigly]

@ Kylde LOL - Thats what I asked in the 'other VSO user support arena'! Yes, I have but haven't got a single post-proc enabled so it should be a clean signal. I should really do a test with ffdshow disabled and use the 'real' codecs to rule ffdshow in or out of the equation BUT... ...I have stopped doing extensive tests with this app (not completely tho' ) 'cos I have different issues preventing it being a useful choice for me. That being, 90% of the time, I can't get a 'smooth' conversion: Most of my source files (90%+ of all DLs!) are 24FPS progressive XviDs which DivXToDVD 'converts' to NTSC @ 30FPS or PAL @ 25FPS (, when it doesn't have to). The main issue being it seems to do this pre MPEG-2 stream creation (by duplicating/dropping frames) whereas a DVD MPEG-2 encoder should 'simply' encode all progressive frames and set a flag (repeat_first_field) to true for NTSC DVDs (so the decoder performs 3-2 'conversion' to 30FPS NTSC) or false to cause 2-2 pulldown as in PAL DVDs (with resultant 4% speed-up to 25FPS). CONCLUSION: DivXToDVDs "FPS compensation" is too 'jumpy/jerky/incorrect' for me (it's all subjective ) to use on 90% of my DivX/XviD progressive source.

[JJ]

Confirm on that. Lipsync is easiest way to spot this.

[bigly]

Kylde, back on the colour subject... ...Maybe if you still have an interest in this application you could do an identical encode with ffdshow and one without (using a 'real' XviD/DivX codec). This 'could' help identify the issue. I'm too stuck on the frame-rate compensation issue to care about this one at the moment but please post your results if you do perform this experiment!

[Kylde]

[JJ]

[bigly]

He, he! I think Kylde thought lipsync was another app. I suppose with app names like "G-Spot" it's a fair mistake! Let us know how your colour testing goes Kylde. I'll turn off ffdshow when doing encodes if it seems ffdshow is affecting the colour/brightness etc.

[Kylde]

[lapinou]

as we used ffmpeg, we don't really investigate in the "quality" of the output. in others words, we don't change anything between version about the color, saturation and brightness...

[Kylde]

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