X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=README.md;h=35c3de5127455792bedc26d032d987806faaec0b;hb=22e07ce502275fbede32d212eacdaeabee22fe4c;hp=dd068a462bebd3fb8a6982181b364c967ceff083;hpb=722f1a0f8f82617b3abf646b2d0df2c624e98912;p=youtube-dl

diff --git a/README.md b/README.md
index dd068a462..35c3de512 100644
--- a/README.md
+++ b/README.md
@@ -511,6 +511,8 @@ The basic usage is not to set any template arguments when downloading a single f
  - `timestamp` (numeric): UNIX timestamp of the moment the video became available
  - `upload_date` (string): Video upload date (YYYYMMDD)
  - `uploader_id` (string): Nickname or id of the video uploader
+ - `channel` (string): Full name of the channel the video is uploaded on
+ - `channel_id` (string): Id of the channel
  - `location` (string): Physical location where the video was filmed
  - `duration` (numeric): Length of the video in seconds
  - `view_count` (numeric): How many users have watched the video on the platform
@@ -1166,7 +1168,28 @@ title = self._search_regex(
 
 ### Use safe conversion functions
 
-Wrap all extracted numeric data into safe functions from `utils`: `int_or_none`, `float_or_none`. Use them for string to number conversions as well.
+Wrap all extracted numeric data into safe functions from [`youtube_dl/utils.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/utils.py): `int_or_none`, `float_or_none`. Use them for string to number conversions as well.
+
+Use `url_or_none` for safe URL processing.
+
+Use `try_get` for safe metadata extraction from parsed JSON.
+
+Explore [`youtube_dl/utils.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/utils.py) for more useful convenience functions.
+
+#### More examples
+
+##### Safely extract optional description from parsed JSON
+```python
+description = try_get(response, lambda x: x['result']['video'][0]['summary'], compat_str)
+```
+
+##### Safely extract more optional metadata
+```python
+video = try_get(response, lambda x: x['result']['video'][0], dict) or {}
+description = video.get('summary')
+duration = float_or_none(video.get('durationMs'), scale=1000)
+view_count = int_or_none(video.get('views'))
+```
 
 # EMBEDDING YOUTUBE-DL