mjpeg-decoder - npm Package Compare versions

Comparing version 1.0.0 to 1.0.1

lib/mjpeg-decoder.js

@@ -139,2 +139,3 @@ const { EventEmitter } = require('events');
     if (this.lastFrameTime && (Date.now() - this.lastFrameTime) < interval) {
+      this.drainCallbackQueue(null, frame);
       return;
@@ -149,3 +150,3 @@ }
 
-    if (maxFrames && this.seq >= maxFrames) {
+    if (maxFrames > 0 && this.seq >= maxFrames) {
       this.abort('end');
@@ -152,0 +153,0 @@ return;

package.json

 {
   "name": "mjpeg-decoder",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "A NodeJS M-JPEG decoder which can be used to retrieve individual JPEG frames or take a snapshot from a IP/network camera which serves M-JPEG video stream.",
@@ -10,3 +10,10 @@ "main": "lib/mjpeg-decoder.js",
   "private": false,
-  "types": "./lib/mjpeg-decoder.d.ts"
+  "types": "./lib/mjpeg-decoder.d.ts",
+  "keywords": [
+    "M-JPEG decoder",
+    "mjpeg decoder",
+    "mjpeg snapshot",
+    "mjpeg screenshot",
+    "mjpeg parser"
+  ]
 }

README.md

@@ -57,5 +57,5 @@ # mjpeg-decoder
 `MjpegDecoder.MjpegDecoderOptions`
-- `interval`: Specify the time interval in which the frames will be delivered.
-- `maxFrames`: Specify the max frames to consume before stopping.
-- `timeout`: Specify the timeout before the http connection is aborted
+- `interval`: Specify the time interval in which the frames will be delivered (_default: `0`_)
+- `maxFrames`: Specify the max frames to consume before stopping (_default: `0`_)
+- `timeout`: Specify the timeout before the http connection is aborted (_default: `10000`ms_)
 
@@ -71,3 +71,3 @@ ### Constructor
 > How to find the url of the camera?
-> The camera user manual should usually mention the URL, or searching the camera model number should get you a result as well.  You can also try this tool http://skjm.com/icam/mjpeg.php.
+> The camera user manual should usually mention the URL, or searching the camera model number should get you a result as well. You can also try this tool http://skjm.com/icam/mjpeg.php or this tool https://www.ispyconnect.com/man.aspx.
 
@@ -132,2 +132,20 @@ ### decoderForSnapshot
 - `end`: when you call the `stop` method of the decoder or the max frames have been delivered.
-- `max_buffer_size_exceeded`: when the internal data buffer size reached the limit, and this might be caused by the M-JPEG decoding problem. If you accountered this error, please create an issue.
+- `max_buffer_size_exceeded`: when the internal data buffer size reached the limit, and this might be caused by the M-JPEG decoding problem. If you accountered this error, please create an issue.
+
+### Capture M-JPEG snapshot the other ways
+Use wget:
+```bash
+$ wget <url> -O snapshot.jpg
+```
+
+Use ffmpeg:
+```bash
+ffmpeg -f MJPEG -y -i <url> -r 1 -vframes 1 -q:v 1 snapshot.jpg
+```
+
+## References
+- https://aeroquartet.com/movierepair/jpeg.en.html
+- https://www.media.mit.edu/pia/Research/deepview/exif.html
+- https://github.com/jacksonliam/mjpg-streamer/
+- https://channel9.msdn.com/coding4fun/articles/MJPEG-Decoder
+- https://medium.com/@petehouston/capture-mjpg-streamer-snapshot-9d0e253b9bbd

No alert changes

Improved metrics

Total package byte prevSize

13234

6.25%

Lines of code

230

0.44%

Number of lines in readme file

148

13.85%

No dependency changes