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NeoRutty - The first video is actually overseas and the second is most likely overseas, too, but probably sub-contracted to a different studio. I could always tell when something they did was from the same animation warehouse/sweatshop or not because of the style and just overall quality. The first video you posted (Countries of the World), the animation was done by TMS Studios, the same studio contracted by WB to do the in-betweens all the way back to B:TAS, and subsequently to Tiny Toons, Animaniacs, Pinky & The Brain, and all the WB toons of the time.
To be quite frank, Western, particularly American, in-house animation has been kinda crap ever since they were turned from theatrical shorts to shows for children on television. Budgetary constraints and other blah-blah being the main factors. They've only actually picked up recently
because they get sent to overseas animation studios. Since we're talking Batman, just look at TAS' first episode with the Man-Bat, most of the animation is choppy, disjointed, and chunky (mostly done in-house) until the climactic chase with the Man-Bat. That was all TMS Studios. Heart of Ice is an entire episode done by TMS and it's spectacular compared to say, Harlequinade, which was done partially in-house and subcontracted to another studio.
The method these days, and for the last nearly 40 years, has been the animators in the West really only do the keyframes and then ship the boards to an overseas animation company to do the inbetweens with the incidental backgrounds.The only example I know of where the overseas studio had any serious involvement in any modern show was Samurai Jack, animating entirely new segments into the show knowing they had the permission and freedom to do so (I.E. Birth of Evil - Jack's father fighting spider-Aku).
The last genuinely good American animated cartoon I remember, done in-house at an American run and based studio, was Ren and Stimpy at Spumco, and that was using the traditional 2-D cel animation where the characters only moved left to right, and that show was known for going over-budget and turning in late just to do it.
Now, with new programs the make animation easier, companies are looking elsewhere to get their animation done, particularly digitally animated shows. ******, just look at all these Flash-based shows out there. Without paying people to hand-animate in Flash, shows made in Flash will always
look like Flash.