"It's a miracle!" shouts a rescue worker as a small head is seen emerging from debris in the video posted by a rescue team working in a rebel-held area of the northern city.
The baby girl is heard crying as her whole body, completely covered in dust, is carefully extracted.
A smiling man then clutches the rescued child in his arms while his colleagues off-camera cry: "God is great!"
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"After 16 hours working under difficult conditions, the civil defence in Ansari (in southern Aleppo) was able to rescue a baby girl barely two months old as well as her mother who was injured," a commentary to the video said.
It was impossible to independently verify the authenticity of 30-second clip or where it was shot. It was posted by a group calling itself the "Aleppo civil defence".
Daily air strikes by regime forces have killed hundreds of people in rebel-held parts of the city, drawing international condemnation.
Rebels constantly fire mortar bombs at government-controlled western sectors of Aleppo, which was Syria's commercial hub before its civil war erupted in 2011.