Apart from the lack of background agents and few other features lacking from regular Windows Phone devices, Windows Phone Tango devices like Lumia 610 will also have less video playback capabilities than other regular Windows Phone devices. As per the guide to developers from Nokia,
Video in a supported format but encoded in a codec not supported with hardware acceleration or at higher bitrates or resolutions than the Windows Phone baseline, may either fail to playback or be rendered in software. If software rendering occurs playback will be poor â€” jumpy and choppy.
For example, a video using the VC1 codec Advanced or Main profiles may play through software rendering, instead of hardware acceleration, but if the encoded bitrate is too high it will fail.
7x27a-powered phones impose limitations on the video they can play. These limitations have been implemented to account for the lower processing capacity and memory of these phones. However, by re-encoding your video and making use of the techniques outlined in this article you can preserve your apps UX and continue to offer your users a rich video experience.
ReadÂ full codec/bitrate breakdown and more on this at the source link below.