Ok seems to work, let's see

app.py

@@ -23,15 +23,15 @@ url_input = gr.Textbox(label="Youtube/Twitter/etc video URL (supports many servi
 # download_status = gr.Textbox(label="Status:", value='', lines=1, elem_id="download_status")
 download_status = gr.Checkbox(label="Status:", elem_id="download_status", interactive=False)
 translate_action = gr.Checkbox(label="Auto translate to english", elem_id='translate_toggle', interactive=True, value=True)
-init_video = gr.Video(label="Upload video manually", visible=True, interactive=True)
+init_video = gr.Video(label="Upload video manually", visible=True, interactive=True, mirror_webcam=False)
 init_audio = gr.Audio(label="Downloaded audio", visible=False)
 output_text = gr.Textbox(label="Output text", lines=5, visible=False, max_lines=10, interactive=True)
 sub_video = gr.Video(label="Subbed video", visible=False, mirror_webcam=False)
 
 
 
-def predownload(url):
-  for response in download_generator(url):
+def predownload(url, translate_action):
+  for response in download_generator(url, translate_action):
     updates_object = {}
     updates_object[download_status] = gr.update(label=f"STATUS: {response.get('message')}")
     meta = response.get('meta')
@@ -112,11 +112,14 @@ with gr.Blocks(css=css+"") as demo:
         gr.Button("Download srt file")
         rebake = gr.Button("Edit subtitles on video")
 
-
-  greet_btn.click(fn=predownload, inputs=[url_input], outputs=[download_status, init_video, init_audio, output_text, sub_video], api_name='predownload')
-  url_input.submit(fn=predownload, inputs=[url_input], outputs=[download_status, init_video, init_audio, output_text, sub_video])
+  outputs = [download_status, init_video, init_audio, output_text, sub_video]
+  inputs = [url_input, translate_action]
+  action_btn.click(fn=predownload, inputs=inputs, outputs=outputs, api_name='predownload')
+  url_input.submit(fn=predownload, inputs=inputs, outputs=outputs)
   rebake.click(fn=rebake, inputs=[output_text, sub_video], outputs=[download_status, output_text, sub_video])
 
+  translate_action.change(fn=lambda x: {action_btn: gr.update(value=f"Translate" if x else "Transcribe")},
+                          inputs=[translate_action], outputs=[action_btn])
 
   # Render imported buttons for API bindings
   render_api_elements(url_input,download_status, output_text, sub_video)

download.py

@@ -33,7 +33,7 @@ def download_generator(url, translate_action=True):
   yield {"message": f"Checking {url} for videos"}
   try:
     meta = check_download(url)
-    print(json.dumps(meta, indent=2))
+    # print(json.dumps(meta, indent=2))
     if(meta['duration'] > 159):
       raise Exception("Video is too long, please use videos less than 159 seconds")
     yield {"message": f"Found video with {meta['duration']} seconds duration from {meta['extractor']}", "meta": meta}
@@ -57,7 +57,7 @@ def download_generator(url, translate_action=True):
   ### Step 3 : Transcribe with whisper
   yield {"message": f"[PLEASE WAIT] Starting whisper transcribe with {meta['id']}.mp3"}
   try:
-    whisper_result = transcribe(audio)
+    whisper_result = transcribe(audio, translate_action)
     srt_path = tempdir / f"{meta['id']}.srt"
     with open(srt_path, "w", encoding="utf-8") as srt:
       write_srt(whisper_result["segments"], file=srt)
@@ -151,11 +151,11 @@ def check_download(url):
     return meta
 
 def transcribe(audio, translate_action=True):
-  print('Starting transcribe...')
+  print(f'Starting ' + "translate" if translate_action else "transcribe")
   global model
   if not preload_model:
     model = whisper.load_model(model_size)
-  output = model.transcribe(audio, task="translate" if translate_action else "transcribe" )
+  output = model.transcribe(audio, task="translate" if translate_action else "transcribe")
   output["language"] = LANGUAGES[output["language"]]
   output['segments'] = [{"id": 0, "seek": 0, "start": 0.0, "end": 3, "text": " [AI translation by @vidtranslator]"}] + output['segments']
   print(f'Finished transcribe from {output["language"]}', output["text"])