diff --git a/backend/config_parser.py b/backend/config_parser.py
index 42ce40e..bde6179 100644
--- a/backend/config_parser.py
+++ b/backend/config_parser.py
@@ -84,29 +84,33 @@ class Go2Rtc:
     LNX = "https://github.com/AlexxIT/go2rtc/releases/download/v1.9.4/go2rtc_linux_amd64"
 
     def __init__(self, port = 1984) -> None:
+        self.logger = create_logger(Go2Rtc.__name__)
         self.port = port
         self.enabled = False
         try:
             self.check_exists()
+            self.logger.info("Go2rtc support enabled")
         except:
-            print("go2rtc is disabled")
+            self.logger.error("Go2rtc is disabled")
             pass
 
     def check_exists(self):
         go2rtc_directory = os.path.join(app_dir(), "go2rtc")
         if os.path.exists(go2rtc_directory):
-            print("Go2Rtc directory exists")
+            self.logger.debug("Go2Rtc directory exists")
             if platform.system() == "Windows" and os.path.exists(os.path.join(go2rtc_directory, "go2rtc.exe")):
-                print("[WIN] Go2Rtc is exists, continue create config")
+                self.logger.debug("[WIN] Go2Rtc is exists, continue create config")
                 self.exec = os.path.join(go2rtc_directory, "go2rtc.exe")
                 self.enabled = True
             elif platform.system() == "Linux" and os.path.exists(os.path.join(go2rtc_directory, "go2rtc")):
-                print("[LNX] Go2Rtc is exists, continue create config")
+                self.logger.debug("[LNX] Go2Rtc is exists, continue create config")
                 self.exec = os.path.join(go2rtc_directory, "go2rtc")
                 self.enabled = True
             else:
+                self.logger.error(f"Unknown platform: {platform.system()}")
                 raise Exception(f"go2rtc not downloaded, windows: {self.WIN} linux: {self.LNX}")
         else:
+            self.logger.warning("Go2Rtc not found, he is disabled")
             raise Exception("Go2Rtc not found, he is disabled")
 
     #http://localhost:1984/go2rtc/stream.html?src=0_0_0
@@ -127,7 +131,7 @@ class Go2Rtc:
             lines += Go2RtcChannel(recorder, 2).generate_lines()
             
         cfg_file = os.path.join(app_dir(), "go2rtc", "go2rtc.yaml")
-        print(f"go2rtc config: {cfg_file}")
+        self.logger.debug(f"go2rtc config: {cfg_file}")
 
         async with aiofiles.open(cfg_file, "w", encoding="utf8") as cfg:
             await cfg.write(lines)
@@ -140,34 +144,35 @@ class TranscodeTools:
     WIN32PYTHON = "python-win32"
 
     def __init__(self, tools_directory, transcode_directory, hide_checks = True) -> None:
+        self.logger = create_logger(TranscodeTools.__name__)
         self.hide_checks = hide_checks
         self.tools_directory = tools_directory
         self.transcode_directory = transcode_directory
         if not os.path.exists(tools_directory):
-            print("download git repo https://git.pblr-nyk.pro/gsd/MiskaRisa264 and place in backend folder to enable transcode tools")
+            self.logger.error("download git repo https://git.pblr-nyk.pro/gsd/MiskaRisa264 and place in backend folder to enable transcode tools")
             self.enabled = False
         else:
             python_win32_exists = self.python_win32_exists
             if not python_win32_exists:
-                print("download https://www.python.org/ftp/python/3.12.3/python-3.12.3-embed-win32.zip and unzip in backend/MiskaRisa/python-win32 all contains files")
+                self.logger.error("download https://www.python.org/ftp/python/3.12.3/python-3.12.3-embed-win32.zip and unzip in backend/MiskaRisa/python-win32 all contains files")
             
             check_exists_needed_files = self.check_exists_needed_files
             if not check_exists_needed_files:
-                print("MiskaRisa264 is not fully downloaded, watch in directory to find lost files")
+                self.logger.error("MiskaRisa264 is not fully downloaded, watch in directory to find lost files")
 
             check_ffmpeg = self.check_ffmpeg()
             if not check_ffmpeg:
-                print("ffmpeg in not installed on system or on windows in not in PATH env")
+                self.logger.error("ffmpeg in not installed on system or on windows in not in PATH env")
 
             check_converter = self.check_converter()
             if not check_converter:
-                print("failed run h264_converter.py with python-win32")
+                self.logger.error("failed run h264_converter.py with python-win32")
             
             self.enabled = check_exists_needed_files and python_win32_exists and check_ffmpeg and check_converter
             if not self.enabled:
-                print("Cannot enabled transcode tools, have a errors on init, run config_parser with --no-hide-check parameters to more info")
+                self.logger.error("Cannot enabled transcode tools, have a errors on init, run config_parser with --no-hide-check parameters to more info")
 
-        print("Transcode tools", "enabled" if self.enabled else "disabled")
+        self.logger.info("Transcode tools " + "enabled" if self.enabled else "disabled")
 
     @property
     def check_exists_needed_files(self):
@@ -219,7 +224,7 @@ class TranscodeTools:
         exec_string.append(self.converter_script)
         exec_string.append(source_file)
 
-        print("execute", exec_cmd, exec_string)
+        self.logger.debug(f"execute {exec_cmd} {exec_string}")
         proc = await asyncio.create_subprocess_exec(exec_cmd, *exec_string)
         await proc.communicate()
 
@@ -232,7 +237,7 @@ class TranscodeTools:
 
     async def avitomp4(self, source_file, delete_source_file = False):
         exec_string = ["-y", "-i", source_file, "-movflags", "faststart", f"{source_file}.mp4"]
-        print("execute", exec_string)
+        self.logger.debug(f"execute {exec_string}")
         proc = await asyncio.create_subprocess_exec("ffmpeg", *exec_string)
         await proc.communicate()
 
@@ -264,17 +269,17 @@ class TranscodeTools:
             return
 
         if not os.path.exists(raw_file) or os.path.getsize(raw_file) != file.size:
-            print("save raw file to", raw_file)
+            self.logger.debug(f"save raw file to {raw_file}")
             async with aiofiles.open(raw_file, "wb") as raw:
                 self.statuses[status.b64].total_h264_bytes = file.size
                 async for chunk in nvr.stream_file(file):
                     self.statuses[status.b64].downloaded_h264_bytes += len(chunk)
                     self.statuses[status.b64].h264 = round(100 * self.statuses[status.b64].downloaded_h264_bytes / self.statuses[status.b64].total_h264_bytes)
                     await raw.write(chunk)
-                print("raw file is downloaded")
+                self.logger.debug("raw file is downloaded")
         else:
-            print("File already content on server")
-        print("logout from nvr, he is not more needed")
+            self.logger.debug("File already content on server")
+        self.logger.debug("logout from nvr, he is not more needed")
         nvr.logout()
 
         self.statuses[status.b64].avi = 0
@@ -282,16 +287,16 @@ class TranscodeTools:
         if not os.path.exists(avi_file) or reCreate:
             avi_file = await self.h264toavi(raw_file)
         else:
-            print("file avi format already exitst")
+            self.logger.debug("file avi format already exitst")
         self.statuses[status.b64].avi = 100
 
 
         self.statuses[status.b64].mp4 = 0
         mp4_file = avi_file + ".mp4"
         if not os.path.exists(mp4_file) or reCreate:
-            mp4_file = await self.avitomp4(avi_file)
+            mp4_file = await self.avitomp4(avi_file, True)
         else:
-            print("file mp4 format already exists")
+            self.logger.debug("file mp4 format already exists")
         self.statuses[status.b64].mp4 = 100
 
         self.statuses[status.b64].outFile = mp4_file
@@ -310,6 +315,7 @@ class TranscodeTools:
 
 class Config:
     def __init__(self, config_name = "config.json", args = None) -> None:
+        self.logger = create_logger(Config.__name__)
         raw = load_config(config_name) if args == None or not args.err_check else {}
         self.listen_address = raw.get("backend", {}).get("address", "0.0.0.0")
         self.listen_port = int(raw.get("backend", {}).get("port", "8080"))
@@ -319,10 +325,10 @@ class Config:
             self.recorders.append(Recorder(raw_server.get("ip"), raw_server.get("port"), raw_server.get("user"), raw_server.get("password"), raw_server.get("name", ""), index=i))
             i += 1
         if (self.recorders.__len__() == 0):
-            print("Recorders not find")
+            self.logger.warning("Recorders not find")
         else:
             for recorder in self.recorders:
-                print(recorder)
+                self.logger.info(recorder)
         self.transcode_tools:TranscodeTools = self.check_transcode_tools(not args.no_hide_check if args != None else True)
 
     def getRecorder(self, index = 0) -> Recorder:
diff --git a/backend/global_funcs.py b/backend/global_funcs.py
index 245396f..b44c81b 100644
--- a/backend/global_funcs.py
+++ b/backend/global_funcs.py
@@ -3,14 +3,18 @@ import os
 import sys
 from json import loads
 import uuid
+import logging
+
 
 def uuid_from_string(string:str):
     hex_string = hashlib.md5(string.encode("utf8")).hexdigest()
     return uuid.UUID(hex=hex_string)
 
+
 def app_dir():
     return os.path.dirname(os.path.abspath(__file__))
 
+
 def load_config(config_name):
     try:
         path = os.path.join(app_dir(), config_name)
@@ -19,4 +23,15 @@ def load_config(config_name):
             return loads(f.read())
     except Exception as e:
         print("cannot find or parse config.json", e)
-        sys.exit(1)    
\ No newline at end of file
+        sys.exit(1)
+
+
+def create_logger(t, level:int = logging.INFO, format=None):
+    logger = logging.getLogger(t)
+    logger.setLevel(level)
+    ch = logging.StreamHandler()
+    if format:
+        formatter = logging.Formatter(format)
+        ch.setFormatter(formatter)
+    logger.addHandler(ch)
+    return logger
diff --git a/backend/nvr_core.py b/backend/nvr_core.py
index f09b09b..8dfa4f4 100644
--- a/backend/nvr_core.py
+++ b/backend/nvr_core.py
@@ -6,6 +6,7 @@ from nvr_types import File as NvrFile
 from nvr_types import list_local_files
 from nvr_types import PRIMARY_STREAM, SECONDARY_STREAM
 from nvr_types import H264
+from global_funcs import create_logger
 
 START = "2024-08-04 6:22:34"
 END = "2024-08-04 23:23:09"
@@ -19,6 +20,7 @@ def date_today(begin = True):
 
 class NVR:
     def __init__(self, client, loop) -> None:
+        self.logger = create_logger(NVR.__name__)
         self.client:DVRIPCam = client
         self.loop = loop
 
@@ -36,7 +38,7 @@ class NVR:
             start = date_today()
         if not end:
             end = date_today(False)
-        print("Search files", start, end)
+        self.logger.info(f"Search files from {start} to {end}")
         for raw_file in await list_local_files(self.client, startTime=start, endTime=end, filetype=ftype, channel=channel, streamType=stype):
             if json:
                 yield NvrFile(raw_file, channel, stype).json
@@ -45,13 +47,13 @@ class NVR:
 
     async def stream_file(self, file: NvrFile) -> bytes:
         len_data = await file.generate_first_bytes(self.client)
-        print("len data =",len_data)
+        self.logger.debug(f"len data = {len_data}")
         if (len_data is None):
             yield b""
         else:
             async for chunk in file.get_file_stream(self.client, len_data):
                 if (chunk == None):
-                    print("end of file")
+                    self.logger.debug("end of file")
                     break
                 yield chunk
 
@@ -61,4 +63,4 @@ class NVR:
             async for byte in file.generate_bytes(self.client):
                 f.write(byte)
                 downloaded_bytes += len(byte)
-                print("\r", downloaded_bytes, "/", file.size)
\ No newline at end of file
+                self.logger.debug(f"\r{downloaded_bytes}/{file.size}")
\ No newline at end of file
diff --git a/backend/nvr_types.py b/backend/nvr_types.py
index 1f974b8..d9b4517 100644
--- a/backend/nvr_types.py
+++ b/backend/nvr_types.py
@@ -52,7 +52,6 @@ class File:
     @staticmethod
     def from_b64(b64):
         data = json.loads(base64.b64decode(b64).decode('utf-8'))
-        print(data)
         return File(data, data.get("channel"), data.get("stream"))
 
     @staticmethod
diff --git a/backend/server.py b/backend/server.py
index 1463c3a..6e6f7c0 100644
--- a/backend/server.py
+++ b/backend/server.py
@@ -1,10 +1,12 @@
-from fastapi import FastAPI, Response, BackgroundTasks
+from fastapi import FastAPI, Response, BackgroundTasks, Header
 from fastapi.responses import StreamingResponse, FileResponse
 import uvicorn
 import traceback
+import aiofiles
 
 from config_parser import Config as ConfigParser
 from config_parser import TranscodeStatus, TranscodeTools, Go2Rtc
+from global_funcs import create_logger
 from nvr_core import NVR
 from nvr_types import File
 
@@ -16,6 +18,7 @@ class Server:
     API_BASE_REF = "/api/dvrip"
 
     def __init__(self):
+        self.logger = create_logger(Server.__name__)
         self.setup_events()
         self.setup_routers()
 
@@ -28,7 +31,7 @@ class Server:
                 channels = await nvr.channels()
                 nvr.logout()
                 self.config.recorders[i].channels = len(channels)
-                print(f"{self.config.recorders[i]} channels count: {self.config.recorders[i].channels}")
+                self.logger.info(f"{self.config.recorders[i]} channels count: {self.config.recorders[i].channels}")
             await self.go2rtc.start_go2rtc(self.config.recorders)
 
     def setup_routers(self):
@@ -93,13 +96,12 @@ class Server:
                 await nvr.login()
                 nvr.client.debug()
                 file: File = File.from_b64(b64 + "==")
-                print("open")
 
                 async def after():
                     try:
                         await nvr.client.busy.release()
                     except:
-                        print("Already released")
+                        pass
                     nvr.logout()
 
                 background_tasks.add_task(after)
@@ -160,6 +162,38 @@ class Server:
                 response.status_code = 400
                 return {"ok":False, "error":e}
 
+        @self.app.get(self.API_BASE_REF + "/transcode/stream")
+        async def getTranscodeStream(response: Response, b64:str, range: str = Header(None), chunk_size:int = 256):
+            try:
+                if len(b64) == 0:
+                    response.status_code = 404
+                    return ""
+
+                if not b64 in self.config.transcode_tools.statuses:
+                    response.status_code = 404
+                    return ""
+
+                if self.config.transcode_tools.statuses[b64].done:
+                    start, end = range.replace("bytes=", "").split("-")
+                    start = int(start)
+                    end = int(end) if end else start + 1024 * chunk_size
+                    async with aiofiles.open(self.config.transcode_tools.statuses[b64].outFile, "rb") as video:
+                        await video.seek(start)
+                        data = await video.read(end - start)
+                        headers = {
+                            'Content-Range': f'bytes {str(start)}-{str(end)}/{self.config.transcode_tools.statuses[b64].outSize}',
+                            'Accept-Ranges': 'bytes'
+                        }
+                        return Response(data, status_code=206, headers=headers, media_type="video/mp4")
+                else:
+                    response.status_code = 429
+                    return ""
+
+            except Exception as e:
+                traceback.print_exc()
+                response.status_code = 400
+                return {"ok":False, "error":e}
+
         @self.app.get(self.API_BASE_REF + "/stream/{recorder_index}/{channel_index}/{stream_index}")
         async def getGo2RtcStream(recorder_index, channel_index, stream_index):
             return self.go2rtc.get_stream(recorder_index, channel_index, stream_index)
diff --git a/frontend/ang_dvrip/src/app/modals/transcode-modal/transcode-modal.component.html b/frontend/ang_dvrip/src/app/modals/transcode-modal/transcode-modal.component.html
index 5fa5366..737cbb6 100644
--- a/frontend/ang_dvrip/src/app/modals/transcode-modal/transcode-modal.component.html
+++ b/frontend/ang_dvrip/src/app/modals/transcode-modal/transcode-modal.component.html
@@ -4,14 +4,14 @@
   <ng-container *ngIf="!loading && !status.done">
     <p>Прогресс загрузки h264x {{status.h264}} %</p>
     <mat-progress-bar [mode]="'determinate'" [value]="status.h264"></mat-progress-bar>
-    <p>Прогресс загрузки avi {{status.avi}} %</p>
+    <p>Прогресс перекодировки avi {{status.avi}} %</p>
     <mat-progress-bar [mode]="'determinate'" [value]="status.avi"></mat-progress-bar>
-    <p>Прогресс загрузки avi {{status.mp4}} %</p>
+    <p>Прогресс перекодировки mp4 {{status.mp4}} %</p>
     <mat-progress-bar [mode]="'determinate'" [value]="status.mp4"></mat-progress-bar>
   </ng-container>
   <ng-container *ngIf="!loading && status.done">
     <video controls>
-      <source [src]="'api/dvrip/transcode/download?b64=' + status.b64" type="video/mp4"/>
+      <source [src]="'api/dvrip/transcode/stream?b64=' + status.b64" type="video/mp4"/>
     </video>
   </ng-container>
 </mat-dialog-content>