Dmitriy Zub ☀️

Posted on Mar 28, 2022 • Updated on Apr 6, 2022 • Originally published at serpapi.com

Scrape all Naver Video Results using pagination in Python

#python #programming #datascience #webscraping

What will be scraped
Prerequisites
Full Code
Links
Outro

What will be scraped

Title, link, thumbnail, origin, views, date published, channel from all results.

📌Note: Naver Search does not provide more than 600 video search results for the best search result quality: "네이버 검색은 최상의 검색결과 품질을 위해 600건 이상의 동영상 검색결과를 제공하지 않습니다", this is what you'll see when you hit the bottom of the search results.

However, 1008 results were scraped during multiple tests. Possibly, it's because Naver is constantly changing.

Testing CSS selector with SelectorGadget Chrome extension:

Testing CSS selector in the console:

Prerequisites

Basic knowledge scraping with CSS selectors

CSS selectors declare which part of the markup a style applies to thus allowing to extract data from matching tags and attributes.

If you haven't scraped with CSS selectors, there's a dedicated blog post of mine about how to use CSS selectors when web-scraping that covers what it is, pros and cons, and why they're matter from a web-scraping perspective.

Separate virtual environment

If you didn't work with a virtual environment before, have a look at the dedicated Python virtual environments tutorial using Virtualenv and Poetry blog post of mine to get familiar.

In short, it's a thing that creates an independent set of installed libraries including different Python versions that can coexist with each other at the same system thus preventing libraries or Python version conflicts.

📌Note: this is not a strict requirement for this blog post.

Install libraries:

pip install requests, parsel, playwright

Full Code

This section is split into two parts:

Method	Used libraries
parse data without browser automation	`requests` and `parsel` which is a `bs4` analog that supports Xpath.
parse data with browser automation	`playwright`, which is a modern `selenium` analog.

Scrape all Naver Video Results without Browser Automation

import requests, json
from parsel import Selector

params = {
    "start": 0,            # page number
    "display": "48",       # videos to display. Hard limit.
    "query": "minecraft",  # search query
    "where": "video",      # Naver videos search engine 
    "sort": "rel",         # sorted as you would see in the browser
    "video_more": "1"      # required to receive a JSON data
}

headers = {
    "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36",
}

video_results = []

html = requests.get("https://s.search.naver.com/p/video/search.naver", params=params, headers=headers, timeout=30)
json_data = json.loads(html.text.replace("( {", "{").replace("]})", "]}"))
html_data = json_data["aData"]

while params["start"] <= int(json_data["maxCount"]):
    for result in html_data:
        selector = Selector(result)

        for video in selector.css(".video_bx"):
            title = video.css(".text").xpath("normalize-space()").get().strip()
            link = video.css(".info_title::attr(href)").get()
            thumbnail = video.css(".thumb_area img::attr(src)").get()
            channel = video.css(".channel::text").get()
            origin = video.css(".origin::text").get()
            video_duration = video.css(".time::text").get()
            views = video.css(".desc_group .desc:nth-child(1)::text").get()
            date_published = video.css(".desc_group .desc:nth-child(2)::text").get()

            video_results.append({
                "title": title,
                "link": link,
                "thumbnail": thumbnail,
                "channel": channel,
                "origin": origin,
                "video_duration": video_duration,
                "views": views,
                "date_published": date_published
            })

    params["start"] += 48
    html = requests.get("https://s.search.naver.com/p/video/search.naver", params=params, headers=headers, timeout=30)
    html_data = json.loads(html.text.replace("( {", "{").replace("]})", "]}"))["aData"]

print(json.dumps(video_results, indent=2, ensure_ascii=False))

Create URL parameters and request headers:

# https://docs.python-requests.org/en/master/user/quickstart/#passing-parameters-in-urls
params = {
    "start": 0,           # page number
    "display": "48",      # videos to display. Hard limit.
    "query": "minecraft", # search query
    "where": "video",     # Naver videos search engine 
    "sort": "rel",        # sorted as you would see in the browser
    "video_more": "1"     # unknown but required to receive a JSON data
}

# https://requests.readthedocs.io/en/master/user/quickstart/#custom-headers
headers = {
    "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36",
}

Create temporary list to store parsed data:

video_results = []

Pass headers, URL params and make a request to get JSON data:

html = requests.get("https://s.search.naver.com/p/video/search.naver", params=params, headers=headers, timeout=30)

# removes (replaces) unnecessary parts from parsed JSON 
json_data = json.loads(html.text.replace("( {", "{").replace("]})", "]}"))
html_data = json_data["aData"]

Code	Explanation
`timeout=30`	to stop waiting for a response after 30 sec.

Returned JSON data from json_data:

Actual HTML returned from html_data, more precisely from json_data["aData"] (saved and opened in the browser):

Create a while loop to extract all available video results:

while params["start"] <= int(json_data["maxCount"]):
    for result in html_data:
        selector = Selector(result)

        for video in selector.css(".video_bx"):
            title = video.css(".text").xpath("normalize-space()").get().strip()
            link = video.css(".info_title::attr(href)").get()
            thumbnail = video.css(".thumb_area img::attr(src)").get()
            channel = video.css(".channel::text").get()
            origin = video.css(".origin::text").get()
            video_duration = video.css(".time::text").get()
            views = video.css(".desc_group .desc:nth-child(1)::text").get()
            date_published = video.css(".desc_group .desc:nth-child(2)::text").get()

            video_results.append({
                "title": title,
                "link": link,
                "thumbnail": thumbnail,
                "channel": channel,
                "origin": origin,
                "video_duration": video_duration,
                "views": views,
                "date_published": date_published
            })

        params["start"] += 48

        # update previous page to a new page
        html = requests.get("https://s.search.naver.com/p/video/search.naver", params=params, headers=headers, timeout=30)
        html_data = json.loads(html.text.replace("( {", "{").replace("]})", "]}"))["aData"]

Code	Explanation
`while params["start"] <= int(json_data["maxCount"])`	iterate until hits 1000 results which is a hard limit of `["maxCount"]`
`xpath("normalize-space()")`	to get blank text nodes since `parsel` translates every CSS query to XPath, and because XPath's `text()` ignores blank text nodes and gets first text element.
`::text` or `::attr(href)`	`parsel` own CSS pseudo-elements support which extracts text or attributes accordingly.
`params["start"] += 48`	to increment to next page results: `48, 96, 144, 192 ...

Output:

python print(json.dumps(video_results, indent=2, ensure_ascii=False))

json [ { "title": "Minecraft : 🏰 How to build a Survival Castle Tower house", "link": "https://www.youtube.com/watch?v=iU-xjhgU2vQ", "thumbnail": "https://search.pstatic.net/common/?src=https%3A%2F%2Fi.ytimg.com%2Fvi%2FiU-xjhgU2vQ%2Fmqdefault.jpg&type=ac612_350", "channel": "소피 Sopypie", "origin": "Youtube", "video_duration": "25:27", "views": "126", "date_published": "1일 전" }, { "title": "조금 혼란스러울 수 있는 마인크래프트 [ Minecraft ASMR Tower ]", "link": "https://www.youtube.com/watch?v=y8x8oDAek_w", "thumbnail": "https://search.pstatic.net/common/?src=https%3A%2F%2Fi.ytimg.com%2Fvi%2Fy8x8oDAek_w%2Fmqdefault.jpg&type=ac612_350", "channel": "세빈 XEBIN", "origin": "Youtube", "video_duration": "00:58", "views": "1,262", "date_published": "2021.11.13." } ]

Scrape all Naver Video Results with Browser Automation

`python
from playwright.sync_api import sync_playwright
import json

with sync_playwright() as p:
browser = p.chromium.launch(headless=False)
page = browser.new_page()
page.goto("https://search.naver.com/search.naver?where=video&query=minecraft")

video_results = []

not_reached_end = True
while not_reached_end:
    page.evaluate("""let scrollingElement = (document.scrollingElement || document.body);
                             scrollingElement.scrollTop = scrollingElement scrollHeight;""")

    if page.locator("#video_max_display").is_visible():
        not_reached_end = False

for index, video in enumerate(page.query_selector_all(".video_bx"), start=1):
    title = video.query_selector(".text").inner_text()
    link = video.query_selector(".info_title").get_attribute("href")
    thumbnail = video.query_selector(".thumb_area img").get_attribute("src")
    channel = None if video.query_selector(".channel") is None else video.query_selector(".channel").inner_text()
    origin = video.query_selector(".origin").inner_text()
    video_duration = video.query_selector(".time").inner_text()
    views = video.query_selector(".desc_group .desc:nth-child(1)").inner_text()
    date_published = None if video.query_selector(".desc_group .desc:nth-child(2)") is None else \
        video.query_selector(".desc_group .desc:nth-child(2)").inner_text()

    video_results.append({
        "position": index,
        "title": title,
        "link": link,
        "thumbnail": thumbnail,
        "channel": channel,
        "origin": origin,
        "video_duration": video_duration,
        "views": views,
        "date_published": date_published
    })

print(json.dumps(video_results, indent=2, ensure_ascii=False))

browser.close()

Lunch a Chromium browser and make a request:

`python

also supports async

with sync_playwright() as p:
# launches Chromium, opens a new page and makes a request
browser = p.chromium.launch(headless=False) # or firefox, webkit
page = browser.new_page()
page.goto("https://search.naver.com/search.naver?where=video&query=minecraft")
`

Create temporary list to store extracted data:

python video_results = []

Create a while loop and check for exception to stop scrolling:

`python
not_reached_end = True
while not_reached_end:
# scroll to the bottom of the page
page.evaluate("""let scrollingElement = (document.scrollingElement || document.body);
scrollingElement.scrollTop = scrollingElement scrollHeight;""")

# break out of the while loop when hit the bottom of the video results 
# looks for text at the bottom of the results:
# "Naver Search does not provide more than 600 video search results..."
if page.locator("#video_max_display").is_visible():
    not_reached_end = False

Code	Explanation
`page.evaluate()`	to run JavaScript expressions. You can also use `playwright` keyboard keys and shortcuts to do the same thing

Iterate over scrolled results and append to temporary list:

`python
for index, video in enumerate(page.query_selector_all(".video_bx"), start=1):
title = video.query_selector(".text").inner_text()
link = video.query_selector(".info_title").get_attribute("href")
thumbnail = video.query_selector(".thumb_area img").get_attribute("src")

# return None if no result is displayed from Naver.
# "is None" used because query_selector() returns a NoneType (None) object:
# https://playwright.dev/python/docs/api/class-page#page-query-selector
channel = None if video.query_selector(".channel") is None else video.query_selector(".channel").inner_text()
origin = video.query_selector(".origin").inner_text()
video_duration = video.query_selector(".time").inner_text()
views = video.query_selector(".desc_group .desc:nth-child(1)").inner_text()
date_published = None if video.query_selector(".desc_group .desc:nth-child(2)") is None else \
    video.query_selector(".desc_group .desc:nth-child(2)").inner_text()

video_results.append({
    "position": index,
    "title": title,
    "link": link,
    "thumbnail": thumbnail,
    "channel": channel,
    "origin": origin,
    "video_duration": video_duration,
    "views": views,
    "date_published": date_published
})

Code	Explanation
`enumerate()`	to get index position of each video
`query_selector_all()`	to return a `list` of matches. Default: `[]`
`query_selector()`	to return a single match. Default: `None`

Close browser instance after data has been extracted:

python browser.close()

Output:

json [ { "position": 1, "title": "Minecraft : 🏰 How to build a Survival Castle Tower house", "link": "https://www.youtube.com/watch?v=iU-xjhgU2vQ", "thumbnail": "https://search.pstatic.net/common/?src=https%3A%2F%2Fi.ytimg.com%2Fvi%2FiU-xjhgU2vQ%2Fmqdefault.jpg&type=ac612_350", "channel": "소피 Sopypie", "origin": "Youtube", "video_duration": "25:27", "views": "재생수126", "date_published": "20시간 전" }, { "position": 1008, "title": "Titanic [Minecraft] V3 | 타이타닉 [마인크래프트] V3", "link": "https://www.youtube.com/watch?v=K39joThAoC0", "thumbnail": "https://search.pstatic.net/common/?src=https%3A%2F%2Fi.ytimg.com%2Fvi%2FK39joThAoC0%2Fmqdefault.jpg&type=ac612_350", "channel": "나이아Naia", "origin": "Youtube", "video_duration": "02:40", "views": "재생수22", "date_published": "2021.11.11." } ]

Outro

This blog post is for information purpose only. Use the received information for useful purposes, for example, if you know how to help improve Naver's service.

If you have anything to share, any questions, suggestions, or something that isn't working correctly, reach out via Twitter at @dimitryzub, or @serp_api.

Yours,
Dmitriy, and the rest of SerpApi Team.

Join us on Reddit | Twitter | YouTube

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Scrape all Naver Video Results using pagination in Python

What will be scraped

Prerequisites

Full Code

Scrape all Naver Video Results without Browser Automation

Scrape all Naver Video Results with Browser Automation

also supports async

Links

Outro

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